./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan --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 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan --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 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:04:13,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:04:13,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:04:13,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:04:13,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:04:13,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:04:13,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:04:13,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:04:13,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:04:13,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:04:13,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:04:13,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:04:13,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:04:13,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:04:13,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:04:13,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:04:13,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:04:13,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:04:13,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:04:13,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:04:13,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:04:13,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:04:13,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:04:13,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:04:13,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:04:13,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:04:13,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:04:13,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:04:13,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:04:13,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:04:13,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:04:13,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:04:13,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:04:13,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:04:13,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:04:13,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:04:13,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:04:13,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:04:13,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:04:13,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:04:13,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:04:13,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 06:04:13,284 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:04:13,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:04:13,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:04:13,285 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:04:13,285 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:04:13,285 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:04:13,285 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:04:13,285 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:04:13,286 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:04:13,286 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:04:13,286 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:04:13,286 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:04:13,286 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:04:13,286 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:04:13,286 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:04:13,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 06:04:13,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 06:04:13,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:04:13,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:04:13,287 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 06:04:13,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:04:13,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:04:13,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:04:13,288 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 06:04:13,288 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 06:04:13,288 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 06:04:13,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:04:13,288 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:04:13,288 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:04:13,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:04:13,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:04:13,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:04:13,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:04:13,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:04:13,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:04:13,289 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:04:13,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:04:13,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:04:13,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:04:13,289 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-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 [2020-12-09 06:04:13,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:04:13,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:04:13,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:04:13,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:04:13,493 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:04:13,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-12-09 06:04:13,539 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/data/230d92539/4be882bb38a24903abcb6576561c0fb9/FLAG0e4c1c3aa [2020-12-09 06:04:13,997 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:04:13,997 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-12-09 06:04:14,006 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/data/230d92539/4be882bb38a24903abcb6576561c0fb9/FLAG0e4c1c3aa [2020-12-09 06:04:14,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/data/230d92539/4be882bb38a24903abcb6576561c0fb9 [2020-12-09 06:04:14,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:04:14,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:04:14,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:04:14,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:04:14,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:04:14,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:04:14" (1/1) ... [2020-12-09 06:04:14,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7e9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14, skipping insertion in model container [2020-12-09 06:04:14,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:04:14" (1/1) ... [2020-12-09 06:04:14,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:04:14,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:04:14,223 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2020-12-09 06:04:14,226 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2020-12-09 06:04:14,227 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2020-12-09 06:04:14,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:04:14,237 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:04:14,264 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2020-12-09 06:04:14,265 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2020-12-09 06:04:14,266 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2020-12-09 06:04:14,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:04:14,306 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:04:14,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14 WrapperNode [2020-12-09 06:04:14,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:04:14,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:04:14,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:04:14,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:04:14,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14" (1/1) ... [2020-12-09 06:04:14,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14" (1/1) ... [2020-12-09 06:04:14,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:04:14,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:04:14,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:04:14,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:04:14,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14" (1/1) ... [2020-12-09 06:04:14,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14" (1/1) ... [2020-12-09 06:04:14,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14" (1/1) ... [2020-12-09 06:04:14,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14" (1/1) ... [2020-12-09 06:04:14,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14" (1/1) ... [2020-12-09 06:04:14,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14" (1/1) ... [2020-12-09 06:04:14,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14" (1/1) ... [2020-12-09 06:04:14,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:04:14,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:04:14,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:04:14,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:04:14,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:04:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 06:04:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 06:04:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 06:04:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 06:04:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:04:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 06:04:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 06:04:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:04:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:04:14,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:04:14,881 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:04:14,882 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 06:04:14,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:04:14 BoogieIcfgContainer [2020-12-09 06:04:14,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:04:14,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:04:14,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:04:14,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:04:14,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:04:14" (1/3) ... [2020-12-09 06:04:14,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4244e86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:04:14, skipping insertion in model container [2020-12-09 06:04:14,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:14" (2/3) ... [2020-12-09 06:04:14,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4244e86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:04:14, skipping insertion in model container [2020-12-09 06:04:14,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:04:14" (3/3) ... [2020-12-09 06:04:14,891 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-12-09 06:04:14,901 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:04:14,904 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 65 error locations. [2020-12-09 06:04:14,918 INFO L253 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2020-12-09 06:04:14,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:04:14,934 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 06:04:14,934 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:04:14,934 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:04:14,934 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:04:14,934 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:04:14,934 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:04:14,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:04:14,952 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2020-12-09 06:04:14,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 06:04:14,957 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:14,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 06:04:14,958 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:14,963 INFO L82 PathProgramCache]: Analyzing trace with hash 8126, now seen corresponding path program 1 times [2020-12-09 06:04:14,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:14,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137145528] [2020-12-09 06:04:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:15,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137145528] [2020-12-09 06:04:15,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:15,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 06:04:15,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123719840] [2020-12-09 06:04:15,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:04:15,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:15,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:04:15,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:04:15,096 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 3 states. [2020-12-09 06:04:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:15,198 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-12-09 06:04:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:04:15,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-12-09 06:04:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:15,205 INFO L225 Difference]: With dead ends: 119 [2020-12-09 06:04:15,206 INFO L226 Difference]: Without dead ends: 117 [2020-12-09 06:04:15,207 INFO L677 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 [2020-12-09 06:04:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-09 06:04:15,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2020-12-09 06:04:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-09 06:04:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2020-12-09 06:04:15,236 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 2 [2020-12-09 06:04:15,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:15,236 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2020-12-09 06:04:15,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:04:15,237 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2020-12-09 06:04:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 06:04:15,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:15,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 06:04:15,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:04:15,237 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:15,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:15,238 INFO L82 PathProgramCache]: Analyzing trace with hash 8127, now seen corresponding path program 1 times [2020-12-09 06:04:15,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:15,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516557908] [2020-12-09 06:04:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:15,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516557908] [2020-12-09 06:04:15,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:15,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 06:04:15,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238212425] [2020-12-09 06:04:15,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:04:15,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:15,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:04:15,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:04:15,276 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand 3 states. [2020-12-09 06:04:15,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:15,380 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2020-12-09 06:04:15,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:04:15,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-12-09 06:04:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:15,382 INFO L225 Difference]: With dead ends: 127 [2020-12-09 06:04:15,382 INFO L226 Difference]: Without dead ends: 127 [2020-12-09 06:04:15,383 INFO L677 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 [2020-12-09 06:04:15,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-09 06:04:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 116. [2020-12-09 06:04:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-09 06:04:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2020-12-09 06:04:15,393 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 2 [2020-12-09 06:04:15,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:15,393 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2020-12-09 06:04:15,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:04:15,393 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2020-12-09 06:04:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 06:04:15,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:15,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:15,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:04:15,394 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:15,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:15,395 INFO L82 PathProgramCache]: Analyzing trace with hash 696206736, now seen corresponding path program 1 times [2020-12-09 06:04:15,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:15,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087917561] [2020-12-09 06:04:15,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:15,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087917561] [2020-12-09 06:04:15,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:15,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:04:15,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541195446] [2020-12-09 06:04:15,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:04:15,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:15,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:04:15,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:04:15,462 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand 4 states. [2020-12-09 06:04:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:15,587 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-12-09 06:04:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:04:15,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 06:04:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:15,588 INFO L225 Difference]: With dead ends: 117 [2020-12-09 06:04:15,588 INFO L226 Difference]: Without dead ends: 117 [2020-12-09 06:04:15,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-09 06:04:15,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2020-12-09 06:04:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-09 06:04:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2020-12-09 06:04:15,594 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 7 [2020-12-09 06:04:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:15,594 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2020-12-09 06:04:15,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:04:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2020-12-09 06:04:15,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 06:04:15,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:15,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:15,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:04:15,595 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:15,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:15,596 INFO L82 PathProgramCache]: Analyzing trace with hash 696206737, now seen corresponding path program 1 times [2020-12-09 06:04:15,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:15,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727135887] [2020-12-09 06:04:15,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:15,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727135887] [2020-12-09 06:04:15,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:15,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:04:15,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964870456] [2020-12-09 06:04:15,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:04:15,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:15,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:04:15,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:04:15,646 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand 4 states. [2020-12-09 06:04:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:15,782 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2020-12-09 06:04:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:04:15,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 06:04:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:15,783 INFO L225 Difference]: With dead ends: 140 [2020-12-09 06:04:15,783 INFO L226 Difference]: Without dead ends: 140 [2020-12-09 06:04:15,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-09 06:04:15,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 117. [2020-12-09 06:04:15,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-09 06:04:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2020-12-09 06:04:15,790 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 7 [2020-12-09 06:04:15,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:15,790 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2020-12-09 06:04:15,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:04:15,790 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2020-12-09 06:04:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 06:04:15,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:15,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:15,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 06:04:15,791 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:15,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:15,791 INFO L82 PathProgramCache]: Analyzing trace with hash -960230872, now seen corresponding path program 1 times [2020-12-09 06:04:15,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:15,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833404067] [2020-12-09 06:04:15,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:15,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833404067] [2020-12-09 06:04:15,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:15,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:04:15,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325519262] [2020-12-09 06:04:15,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:04:15,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:15,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:04:15,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:04:15,829 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 4 states. [2020-12-09 06:04:15,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:15,918 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions. [2020-12-09 06:04:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:04:15,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 06:04:15,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:15,919 INFO L225 Difference]: With dead ends: 129 [2020-12-09 06:04:15,919 INFO L226 Difference]: Without dead ends: 129 [2020-12-09 06:04:15,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:15,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-12-09 06:04:15,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2020-12-09 06:04:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-09 06:04:15,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2020-12-09 06:04:15,926 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 9 [2020-12-09 06:04:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:15,927 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2020-12-09 06:04:15,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:04:15,927 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2020-12-09 06:04:15,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 06:04:15,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:15,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:15,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 06:04:15,928 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:15,928 INFO L82 PathProgramCache]: Analyzing trace with hash -960225005, now seen corresponding path program 1 times [2020-12-09 06:04:15,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:15,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577940362] [2020-12-09 06:04:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:15,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577940362] [2020-12-09 06:04:15,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:15,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:04:15,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898759478] [2020-12-09 06:04:15,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:04:15,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:15,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:04:15,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:15,970 INFO L87 Difference]: Start difference. First operand 115 states and 127 transitions. Second operand 5 states. [2020-12-09 06:04:16,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:16,099 INFO L93 Difference]: Finished difference Result 163 states and 180 transitions. [2020-12-09 06:04:16,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:04:16,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 06:04:16,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:16,101 INFO L225 Difference]: With dead ends: 163 [2020-12-09 06:04:16,101 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 06:04:16,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:04:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 06:04:16,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 114. [2020-12-09 06:04:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-09 06:04:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2020-12-09 06:04:16,106 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 9 [2020-12-09 06:04:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:16,107 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2020-12-09 06:04:16,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:04:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2020-12-09 06:04:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 06:04:16,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:16,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:16,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 06:04:16,108 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:16,108 INFO L82 PathProgramCache]: Analyzing trace with hash -960225004, now seen corresponding path program 1 times [2020-12-09 06:04:16,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:16,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648251342] [2020-12-09 06:04:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:16,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648251342] [2020-12-09 06:04:16,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:16,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:04:16,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204037085] [2020-12-09 06:04:16,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:04:16,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:16,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:04:16,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:16,154 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand 5 states. [2020-12-09 06:04:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:16,323 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2020-12-09 06:04:16,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:04:16,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 06:04:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:16,324 INFO L225 Difference]: With dead ends: 185 [2020-12-09 06:04:16,324 INFO L226 Difference]: Without dead ends: 185 [2020-12-09 06:04:16,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:04:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-12-09 06:04:16,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 113. [2020-12-09 06:04:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-09 06:04:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2020-12-09 06:04:16,328 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 9 [2020-12-09 06:04:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:16,328 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2020-12-09 06:04:16,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:04:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2020-12-09 06:04:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 06:04:16,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:16,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:16,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 06:04:16,329 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:16,330 INFO L82 PathProgramCache]: Analyzing trace with hash 641934142, now seen corresponding path program 1 times [2020-12-09 06:04:16,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:16,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530829501] [2020-12-09 06:04:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:16,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530829501] [2020-12-09 06:04:16,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:16,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 06:04:16,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790634460] [2020-12-09 06:04:16,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 06:04:16,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:16,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 06:04:16,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:04:16,394 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand 8 states. [2020-12-09 06:04:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:16,641 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2020-12-09 06:04:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 06:04:16,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-09 06:04:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:16,643 INFO L225 Difference]: With dead ends: 113 [2020-12-09 06:04:16,643 INFO L226 Difference]: Without dead ends: 113 [2020-12-09 06:04:16,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-09 06:04:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-09 06:04:16,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2020-12-09 06:04:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-09 06:04:16,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2020-12-09 06:04:16,647 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 11 [2020-12-09 06:04:16,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:16,648 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2020-12-09 06:04:16,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 06:04:16,648 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2020-12-09 06:04:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 06:04:16,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:16,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:16,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 06:04:16,649 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:16,649 INFO L82 PathProgramCache]: Analyzing trace with hash 641934143, now seen corresponding path program 1 times [2020-12-09 06:04:16,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:16,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652531832] [2020-12-09 06:04:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:16,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652531832] [2020-12-09 06:04:16,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:16,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 06:04:16,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917673165] [2020-12-09 06:04:16,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 06:04:16,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:16,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 06:04:16,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-09 06:04:16,744 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand 9 states. [2020-12-09 06:04:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:17,149 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2020-12-09 06:04:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 06:04:17,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-12-09 06:04:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:17,149 INFO L225 Difference]: With dead ends: 114 [2020-12-09 06:04:17,150 INFO L226 Difference]: Without dead ends: 114 [2020-12-09 06:04:17,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-12-09 06:04:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-09 06:04:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2020-12-09 06:04:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-09 06:04:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2020-12-09 06:04:17,152 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 11 [2020-12-09 06:04:17,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:17,152 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2020-12-09 06:04:17,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 06:04:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2020-12-09 06:04:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 06:04:17,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:17,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:17,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 06:04:17,153 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:17,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1751716296, now seen corresponding path program 1 times [2020-12-09 06:04:17,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:17,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002696091] [2020-12-09 06:04:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:17,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002696091] [2020-12-09 06:04:17,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:17,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 06:04:17,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281483521] [2020-12-09 06:04:17,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:04:17,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:17,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:04:17,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:04:17,189 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand 6 states. [2020-12-09 06:04:17,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:17,339 INFO L93 Difference]: Finished difference Result 161 states and 177 transitions. [2020-12-09 06:04:17,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 06:04:17,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 06:04:17,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:17,340 INFO L225 Difference]: With dead ends: 161 [2020-12-09 06:04:17,340 INFO L226 Difference]: Without dead ends: 161 [2020-12-09 06:04:17,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 06:04:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-09 06:04:17,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 113. [2020-12-09 06:04:17,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-09 06:04:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2020-12-09 06:04:17,342 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 12 [2020-12-09 06:04:17,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:17,343 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2020-12-09 06:04:17,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:04:17,343 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2020-12-09 06:04:17,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 06:04:17,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:17,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:17,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 06:04:17,343 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:17,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:17,344 INFO L82 PathProgramCache]: Analyzing trace with hash -978816544, now seen corresponding path program 1 times [2020-12-09 06:04:17,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:17,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185103655] [2020-12-09 06:04:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:17,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185103655] [2020-12-09 06:04:17,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:17,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:04:17,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959192504] [2020-12-09 06:04:17,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:04:17,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:17,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:04:17,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:17,374 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand 5 states. [2020-12-09 06:04:17,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:17,517 INFO L93 Difference]: Finished difference Result 171 states and 190 transitions. [2020-12-09 06:04:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:04:17,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-09 06:04:17,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:17,518 INFO L225 Difference]: With dead ends: 171 [2020-12-09 06:04:17,518 INFO L226 Difference]: Without dead ends: 171 [2020-12-09 06:04:17,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:04:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-12-09 06:04:17,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 112. [2020-12-09 06:04:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-09 06:04:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-12-09 06:04:17,521 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 16 [2020-12-09 06:04:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:17,522 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-12-09 06:04:17,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:04:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-12-09 06:04:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 06:04:17,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:17,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:17,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 06:04:17,523 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:17,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:17,523 INFO L82 PathProgramCache]: Analyzing trace with hash -978816543, now seen corresponding path program 1 times [2020-12-09 06:04:17,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:17,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376530464] [2020-12-09 06:04:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:17,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376530464] [2020-12-09 06:04:17,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:17,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:04:17,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090102729] [2020-12-09 06:04:17,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:04:17,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:17,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:04:17,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:17,578 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 5 states. [2020-12-09 06:04:17,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:17,767 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2020-12-09 06:04:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:04:17,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-09 06:04:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:17,768 INFO L225 Difference]: With dead ends: 193 [2020-12-09 06:04:17,768 INFO L226 Difference]: Without dead ends: 193 [2020-12-09 06:04:17,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:04:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-12-09 06:04:17,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 111. [2020-12-09 06:04:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-09 06:04:17,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2020-12-09 06:04:17,771 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 16 [2020-12-09 06:04:17,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:17,771 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2020-12-09 06:04:17,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:04:17,771 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2020-12-09 06:04:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 06:04:17,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:17,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:17,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 06:04:17,772 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:17,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:17,773 INFO L82 PathProgramCache]: Analyzing trace with hash 497530791, now seen corresponding path program 1 times [2020-12-09 06:04:17,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:17,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269340230] [2020-12-09 06:04:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:17,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269340230] [2020-12-09 06:04:17,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:17,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 06:04:17,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779323994] [2020-12-09 06:04:17,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:04:17,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:04:17,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:04:17,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:17,833 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand 5 states. [2020-12-09 06:04:17,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:17,926 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2020-12-09 06:04:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:04:17,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-09 06:04:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:17,927 INFO L225 Difference]: With dead ends: 112 [2020-12-09 06:04:17,927 INFO L226 Difference]: Without dead ends: 112 [2020-12-09 06:04:17,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:04:17,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-09 06:04:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-12-09 06:04:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-09 06:04:17,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2020-12-09 06:04:17,929 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 17 [2020-12-09 06:04:17,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:17,929 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2020-12-09 06:04:17,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:04:17,930 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2020-12-09 06:04:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 06:04:17,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:17,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:17,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 06:04:17,930 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:17,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:17,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1756198847, now seen corresponding path program 1 times [2020-12-09 06:04:17,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:04:17,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382192114] [2020-12-09 06:04:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:04:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:04:17,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:04:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:04:17,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:04:17,969 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 06:04:17,970 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:04:17,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 06:04:17,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:04:17 BoogieIcfgContainer [2020-12-09 06:04:17,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:04:17,994 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:04:17,994 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:04:17,994 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:04:17,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:04:14" (3/4) ... [2020-12-09 06:04:17,997 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 06:04:17,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:04:17,999 INFO L168 Benchmark]: Toolchain (without parser) took 3978.30 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 98.8 MB in the beginning and 123.7 MB in the end (delta: -25.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-09 06:04:17,999 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 75.5 MB. Free memory is still 41.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:04:18,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.61 ms. Allocated memory is still 130.0 MB. Free memory was 98.6 MB in the beginning and 76.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-09 06:04:18,001 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.47 ms. Allocated memory is still 130.0 MB. Free memory was 76.0 MB in the beginning and 74.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:04:18,001 INFO L168 Benchmark]: Boogie Preprocessor took 24.51 ms. Allocated memory is still 130.0 MB. Free memory was 74.0 MB in the beginning and 72.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:04:18,002 INFO L168 Benchmark]: RCFGBuilder took 510.06 ms. Allocated memory is still 130.0 MB. Free memory was 72.2 MB in the beginning and 60.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:04:18,002 INFO L168 Benchmark]: TraceAbstraction took 3108.61 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 59.9 MB in the beginning and 123.7 MB in the end (delta: -63.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:04:18,003 INFO L168 Benchmark]: Witness Printer took 3.41 ms. Allocated memory is still 157.3 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:04:18,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 75.5 MB. Free memory is still 41.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.61 ms. Allocated memory is still 130.0 MB. Free memory was 98.6 MB in the beginning and 76.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.47 ms. Allocated memory is still 130.0 MB. Free memory was 76.0 MB in the beginning and 74.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.51 ms. Allocated memory is still 130.0 MB. Free memory was 74.0 MB in the beginning and 72.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 510.06 ms. Allocated memory is still 130.0 MB. Free memory was 72.2 MB in the beginning and 60.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3108.61 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 59.9 MB in the beginning and 123.7 MB in the end (delta: -63.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.41 ms. Allocated memory is still 157.3 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1051]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1051. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) [L1007] list->prev = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list [L1040] COND FALSE !(!(((void*)0) != end)) [L1041] EXPR end->colour [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end [L1045] EXPR end->colour [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next [L1051] COND TRUE !(end->next) [L1051] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 120 locations, 65 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 924 SDtfs, 1369 SDslu, 1354 SDs, 0 SdLazy, 2473 SolverSat, 166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=0, 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, 13 MinimizatonAttempts, 383 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 6287 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:04:19,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:04:19,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:04:19,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:04:19,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:04:19,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:04:19,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:04:19,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:04:19,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:04:19,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:04:19,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:04:19,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:04:19,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:04:19,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:04:19,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:04:19,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:04:19,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:04:19,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:04:19,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:04:19,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:04:19,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:04:19,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:04:19,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:04:19,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:04:19,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:04:19,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:04:19,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:04:19,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:04:19,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:04:19,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:04:19,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:04:19,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:04:19,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:04:19,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:04:19,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:04:19,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:04:19,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:04:19,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:04:19,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:04:19,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:04:19,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:04:19,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 06:04:19,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:04:19,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:04:19,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:04:19,770 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:04:19,770 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:04:19,770 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:04:19,770 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:04:19,770 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:04:19,770 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:04:19,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 06:04:19,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 06:04:19,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:04:19,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:04:19,771 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 06:04:19,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:04:19,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:04:19,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:04:19,772 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 06:04:19,772 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 06:04:19,772 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 06:04:19,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:04:19,773 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:04:19,773 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 06:04:19,773 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 06:04:19,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:04:19,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:04:19,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:04:19,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 06:04:19,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:04:19,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:04:19,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:04:19,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:04:19,774 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 06:04:19,774 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 06:04:19,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:04:19,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:04:19,775 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 [2020-12-09 06:04:20,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:04:20,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:04:20,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:04:20,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:04:20,024 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:04:20,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-12-09 06:04:20,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/data/b9fa21818/a50ed6a24c8b415cad7a1300f4d1306b/FLAG0c03d25c7 [2020-12-09 06:04:20,514 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:04:20,515 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-12-09 06:04:20,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/data/b9fa21818/a50ed6a24c8b415cad7a1300f4d1306b/FLAG0c03d25c7 [2020-12-09 06:04:20,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/data/b9fa21818/a50ed6a24c8b415cad7a1300f4d1306b [2020-12-09 06:04:20,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:04:20,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:04:20,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:04:20,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:04:20,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:04:20,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:04:20" (1/1) ... [2020-12-09 06:04:20,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7947f38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20, skipping insertion in model container [2020-12-09 06:04:20,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:04:20" (1/1) ... [2020-12-09 06:04:20,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:04:20,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:04:20,766 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2020-12-09 06:04:20,768 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2020-12-09 06:04:20,770 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2020-12-09 06:04:20,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:04:20,787 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:04:20,818 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2020-12-09 06:04:20,819 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2020-12-09 06:04:20,821 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2020-12-09 06:04:20,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:04:20,864 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:04:20,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20 WrapperNode [2020-12-09 06:04:20,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:04:20,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:04:20,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:04:20,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:04:20,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20" (1/1) ... [2020-12-09 06:04:20,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20" (1/1) ... [2020-12-09 06:04:20,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:04:20,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:04:20,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:04:20,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:04:20,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20" (1/1) ... [2020-12-09 06:04:20,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20" (1/1) ... [2020-12-09 06:04:20,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20" (1/1) ... [2020-12-09 06:04:20,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20" (1/1) ... [2020-12-09 06:04:20,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20" (1/1) ... [2020-12-09 06:04:20,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20" (1/1) ... [2020-12-09 06:04:20,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20" (1/1) ... [2020-12-09 06:04:20,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:04:20,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:04:20,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:04:20,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:04:20,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:04:20,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 06:04:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 06:04:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 06:04:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:04:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 06:04:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 06:04:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 06:04:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 06:04:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:04:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:04:21,577 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:04:21,578 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 06:04:21,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:04:21 BoogieIcfgContainer [2020-12-09 06:04:21,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:04:21,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:04:21,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:04:21,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:04:21,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:04:20" (1/3) ... [2020-12-09 06:04:21,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10be6ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:04:21, skipping insertion in model container [2020-12-09 06:04:21,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:04:20" (2/3) ... [2020-12-09 06:04:21,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10be6ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:04:21, skipping insertion in model container [2020-12-09 06:04:21,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:04:21" (3/3) ... [2020-12-09 06:04:21,585 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-12-09 06:04:21,594 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:04:21,596 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 65 error locations. [2020-12-09 06:04:21,604 INFO L253 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2020-12-09 06:04:21,619 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:04:21,619 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 06:04:21,619 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:04:21,619 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:04:21,619 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:04:21,620 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:04:21,620 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:04:21,620 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:04:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2020-12-09 06:04:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 06:04:21,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:21,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 06:04:21,638 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:21,642 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-12-09 06:04:21,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:04:21,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469198962] [2020-12-09 06:04:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 06:04:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:21,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:04:21,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:04:21,764 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:04:21,765 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:21,770 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:21,771 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:21,771 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 06:04:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:21,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:04:21,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469198962] [2020-12-09 06:04:21,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:21,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:04:21,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640166788] [2020-12-09 06:04:21,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:04:21,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:04:21,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:04:21,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:04:21,795 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 3 states. [2020-12-09 06:04:22,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:22,061 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2020-12-09 06:04:22,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:04:22,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-09 06:04:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:22,072 INFO L225 Difference]: With dead ends: 135 [2020-12-09 06:04:22,072 INFO L226 Difference]: Without dead ends: 131 [2020-12-09 06:04:22,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:04:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-09 06:04:22,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2020-12-09 06:04:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-09 06:04:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 134 transitions. [2020-12-09 06:04:22,109 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 134 transitions. Word has length 3 [2020-12-09 06:04:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:22,109 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 134 transitions. [2020-12-09 06:04:22,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:04:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 134 transitions. [2020-12-09 06:04:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 06:04:22,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:22,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 06:04:22,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 06:04:22,312 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:22,314 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-12-09 06:04:22,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:04:22,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537668911] [2020-12-09 06:04:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 06:04:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:22,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 06:04:22,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:04:22,443 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:04:22,444 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:22,450 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:22,452 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:22,452 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:11 [2020-12-09 06:04:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:22,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:04:22,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537668911] [2020-12-09 06:04:22,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:22,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:04:22,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365078920] [2020-12-09 06:04:22,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:04:22,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:04:22,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:04:22,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:04:22,463 INFO L87 Difference]: Start difference. First operand 127 states and 134 transitions. Second operand 3 states. [2020-12-09 06:04:22,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:22,722 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2020-12-09 06:04:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:04:22,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-09 06:04:22,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:22,724 INFO L225 Difference]: With dead ends: 144 [2020-12-09 06:04:22,724 INFO L226 Difference]: Without dead ends: 144 [2020-12-09 06:04:22,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:04:22,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-09 06:04:22,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 131. [2020-12-09 06:04:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-09 06:04:22,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 138 transitions. [2020-12-09 06:04:22,732 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 138 transitions. Word has length 3 [2020-12-09 06:04:22,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:22,732 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 138 transitions. [2020-12-09 06:04:22,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:04:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 138 transitions. [2020-12-09 06:04:22,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:04:22,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:22,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:22,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 06:04:22,935 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:22,937 INFO L82 PathProgramCache]: Analyzing trace with hash 59261803, now seen corresponding path program 1 times [2020-12-09 06:04:22,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:04:22,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001807483] [2020-12-09 06:04:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 06:04:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:23,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 06:04:23,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:04:23,047 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:04:23,048 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:23,049 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:23,050 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:23,050 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 06:04:23,083 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:23,084 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 28 [2020-12-09 06:04:23,088 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:23,103 INFO L625 ElimStorePlain]: treesize reduction 14, result has 48.1 percent of original size [2020-12-09 06:04:23,105 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 06:04:23,106 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:13 [2020-12-09 06:04:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:23,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:04:23,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001807483] [2020-12-09 06:04:23,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:23,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:04:23,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895206350] [2020-12-09 06:04:23,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:04:23,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:04:23,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:04:23,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:04:23,120 INFO L87 Difference]: Start difference. First operand 131 states and 138 transitions. Second operand 4 states. [2020-12-09 06:04:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:23,461 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2020-12-09 06:04:23,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:04:23,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 06:04:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:23,462 INFO L225 Difference]: With dead ends: 136 [2020-12-09 06:04:23,462 INFO L226 Difference]: Without dead ends: 136 [2020-12-09 06:04:23,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-09 06:04:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 121. [2020-12-09 06:04:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-09 06:04:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2020-12-09 06:04:23,470 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 8 [2020-12-09 06:04:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:23,470 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2020-12-09 06:04:23,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:04:23,470 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2020-12-09 06:04:23,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:04:23,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:23,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:23,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 06:04:23,673 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:23,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:23,675 INFO L82 PathProgramCache]: Analyzing trace with hash 59261804, now seen corresponding path program 1 times [2020-12-09 06:04:23,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:04:23,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948673945] [2020-12-09 06:04:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 06:04:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:23,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 06:04:23,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:04:23,799 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:04:23,799 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:23,806 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:23,809 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:04:23,809 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:23,815 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:23,816 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:23,816 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:18 [2020-12-09 06:04:23,860 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:23,861 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-09 06:04:23,862 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:23,873 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:23,877 INFO L382 Elim1Store]: Elim1 did not use preprocessing 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 14 [2020-12-09 06:04:23,878 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:23,887 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:23,892 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 06:04:23,892 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2020-12-09 06:04:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:23,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:04:23,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948673945] [2020-12-09 06:04:23,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:23,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:04:23,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640107021] [2020-12-09 06:04:23,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:04:23,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:04:23,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:04:23,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:23,915 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand 5 states. [2020-12-09 06:04:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:24,565 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-12-09 06:04:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:04:24,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 06:04:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:24,566 INFO L225 Difference]: With dead ends: 159 [2020-12-09 06:04:24,566 INFO L226 Difference]: Without dead ends: 159 [2020-12-09 06:04:24,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:04:24,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-09 06:04:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 132. [2020-12-09 06:04:24,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-09 06:04:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-12-09 06:04:24,572 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 8 [2020-12-09 06:04:24,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:24,572 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-12-09 06:04:24,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:04:24,572 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-12-09 06:04:24,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 06:04:24,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:24,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:24,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 06:04:24,775 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:24,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1116010818, now seen corresponding path program 1 times [2020-12-09 06:04:24,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:04:24,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938956978] [2020-12-09 06:04:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 06:04:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:24,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 06:04:24,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:04:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:24,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:04:24,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938956978] [2020-12-09 06:04:24,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:24,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:04:24,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16886174] [2020-12-09 06:04:24,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:04:24,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:04:24,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:04:24,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:04:24,846 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 4 states. [2020-12-09 06:04:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:25,091 INFO L93 Difference]: Finished difference Result 148 states and 157 transitions. [2020-12-09 06:04:25,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:04:25,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 06:04:25,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:25,092 INFO L225 Difference]: With dead ends: 148 [2020-12-09 06:04:25,092 INFO L226 Difference]: Without dead ends: 148 [2020-12-09 06:04:25,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-09 06:04:25,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2020-12-09 06:04:25,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-09 06:04:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2020-12-09 06:04:25,098 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 10 [2020-12-09 06:04:25,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:25,098 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2020-12-09 06:04:25,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:04:25,098 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2020-12-09 06:04:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 06:04:25,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:25,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:25,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 06:04:25,301 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:25,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:25,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1116017678, now seen corresponding path program 1 times [2020-12-09 06:04:25,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:04:25,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304169379] [2020-12-09 06:04:25,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 06:04:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:25,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 06:04:25,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:04:25,411 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:04:25,412 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:25,413 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:25,413 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:25,414 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 06:04:25,426 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 06:04:25,427 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:25,432 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:25,433 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:25,433 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-12-09 06:04:25,443 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-12-09 06:04:25,444 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:25,446 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:25,446 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:25,446 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:7 [2020-12-09 06:04:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:25,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:04:25,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304169379] [2020-12-09 06:04:25,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:25,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:04:25,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387100123] [2020-12-09 06:04:25,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:04:25,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:04:25,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:04:25,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:25,453 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand 5 states. [2020-12-09 06:04:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:25,894 INFO L93 Difference]: Finished difference Result 183 states and 200 transitions. [2020-12-09 06:04:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:04:25,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 06:04:25,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:25,895 INFO L225 Difference]: With dead ends: 183 [2020-12-09 06:04:25,895 INFO L226 Difference]: Without dead ends: 183 [2020-12-09 06:04:25,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:04:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-12-09 06:04:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 129. [2020-12-09 06:04:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-09 06:04:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2020-12-09 06:04:25,900 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 10 [2020-12-09 06:04:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:25,900 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2020-12-09 06:04:25,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:04:25,900 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2020-12-09 06:04:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 06:04:25,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:25,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:26,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 06:04:26,102 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:26,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:26,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1116017679, now seen corresponding path program 1 times [2020-12-09 06:04:26,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:04:26,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715222953] [2020-12-09 06:04:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 06:04:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:26,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 06:04:26,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:04:26,237 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:04:26,237 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:26,241 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:26,242 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:26,242 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-09 06:04:26,256 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 06:04:26,256 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:26,266 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:26,269 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 06:04:26,270 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:26,279 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:26,280 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:26,280 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-12-09 06:04:26,303 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-09 06:04:26,304 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:26,311 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:26,314 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-12-09 06:04:26,315 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:26,320 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:26,321 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:26,321 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:31, output treesize:9 [2020-12-09 06:04:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:26,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:04:26,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715222953] [2020-12-09 06:04:26,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:26,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:04:26,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561162787] [2020-12-09 06:04:26,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:04:26,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:04:26,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:04:26,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:26,336 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand 5 states. [2020-12-09 06:04:26,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:26,894 INFO L93 Difference]: Finished difference Result 209 states and 226 transitions. [2020-12-09 06:04:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:04:26,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 06:04:26,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:26,895 INFO L225 Difference]: With dead ends: 209 [2020-12-09 06:04:26,895 INFO L226 Difference]: Without dead ends: 209 [2020-12-09 06:04:26,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:04:26,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-09 06:04:26,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 128. [2020-12-09 06:04:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-09 06:04:26,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2020-12-09 06:04:26,900 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 10 [2020-12-09 06:04:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:26,900 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2020-12-09 06:04:26,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:04:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2020-12-09 06:04:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 06:04:26,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:26,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:27,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 06:04:27,103 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:27,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:27,104 INFO L82 PathProgramCache]: Analyzing trace with hash -259561188, now seen corresponding path program 1 times [2020-12-09 06:04:27,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:04:27,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887797214] [2020-12-09 06:04:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 06:04:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:27,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 06:04:27,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:04:27,208 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-09 06:04:27,209 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:27,211 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:27,211 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:27,211 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-12-09 06:04:27,231 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-12-09 06:04:27,232 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:27,233 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:27,233 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:27,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-12-09 06:04:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:27,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:04:27,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887797214] [2020-12-09 06:04:27,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:27,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 06:04:27,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463188956] [2020-12-09 06:04:27,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:04:27,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:04:27,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:04:27,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:04:27,242 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand 5 states. [2020-12-09 06:04:27,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:27,650 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2020-12-09 06:04:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:04:27,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 06:04:27,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:27,652 INFO L225 Difference]: With dead ends: 188 [2020-12-09 06:04:27,652 INFO L226 Difference]: Without dead ends: 188 [2020-12-09 06:04:27,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:04:27,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-09 06:04:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 133. [2020-12-09 06:04:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-09 06:04:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2020-12-09 06:04:27,655 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 13 [2020-12-09 06:04:27,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:27,655 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2020-12-09 06:04:27,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:04:27,655 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2020-12-09 06:04:27,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 06:04:27,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:27,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:27,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 06:04:27,857 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:27,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:27,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1834952304, now seen corresponding path program 1 times [2020-12-09 06:04:27,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:04:27,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296991104] [2020-12-09 06:04:27,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 06:04:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:28,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 06:04:28,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:04:28,033 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:04:28,034 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:28,036 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:28,036 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:28,036 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 06:04:28,060 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:28,060 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2020-12-09 06:04:28,063 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:28,068 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:28,069 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:28,069 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:17 [2020-12-09 06:04:28,085 INFO L382 Elim1Store]: Elim1 did not use preprocessing 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 [2020-12-09 06:04:28,086 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:28,093 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:28,094 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:28,094 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:25 [2020-12-09 06:04:28,157 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:28,157 INFO L382 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 57 [2020-12-09 06:04:28,160 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-09 06:04:28,161 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 06:04:28,162 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:28,173 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:28,174 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 06:04:28,174 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2020-12-09 06:04:28,234 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:28,234 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 33 [2020-12-09 06:04:28,235 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:28,241 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:28,243 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 06:04:28,243 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:43, output treesize:17 [2020-12-09 06:04:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:28,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:04:28,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296991104] [2020-12-09 06:04:28,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:28,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 06:04:28,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152042536] [2020-12-09 06:04:28,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 06:04:28,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:04:28,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 06:04:28,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:04:28,293 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand 10 states. [2020-12-09 06:04:29,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:29,293 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2020-12-09 06:04:29,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 06:04:29,293 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-12-09 06:04:29,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:29,294 INFO L225 Difference]: With dead ends: 154 [2020-12-09 06:04:29,294 INFO L226 Difference]: Without dead ends: 154 [2020-12-09 06:04:29,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2020-12-09 06:04:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-09 06:04:29,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 132. [2020-12-09 06:04:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-09 06:04:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2020-12-09 06:04:29,297 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 14 [2020-12-09 06:04:29,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:29,297 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2020-12-09 06:04:29,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 06:04:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2020-12-09 06:04:29,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 06:04:29,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:29,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:29,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 06:04:29,499 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:29,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:29,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1834952303, now seen corresponding path program 1 times [2020-12-09 06:04:29,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:04:29,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895661917] [2020-12-09 06:04:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 06:04:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:04:29,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 06:04:29,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:04:29,628 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:04:29,629 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,630 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,630 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 06:04:29,642 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_66|], 1=[|v_#valid_83|]} [2020-12-09 06:04:29,645 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:04:29,645 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,654 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,659 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,659 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-12-09 06:04:29,660 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,666 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,667 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,667 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:13 [2020-12-09 06:04:29,684 INFO L382 Elim1Store]: Elim1 did not use preprocessing 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 [2020-12-09 06:04:29,684 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,695 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,698 INFO L382 Elim1Store]: Elim1 did not use preprocessing 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 [2020-12-09 06:04:29,698 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,706 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,707 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,708 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:25 [2020-12-09 06:04:29,750 INFO L382 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 29 treesize of output 24 [2020-12-09 06:04:29,751 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,766 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,801 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,801 INFO L382 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 66 [2020-12-09 06:04:29,804 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-09 06:04:29,804 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 06:04:29,805 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,823 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,824 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 06:04:29,824 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:67, output treesize:53 [2020-12-09 06:04:29,872 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 28 treesize of output 10 [2020-12-09 06:04:29,873 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,887 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,903 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,903 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2020-12-09 06:04:29,904 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,910 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:04:29,911 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:04:29,912 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:67, output treesize:11 [2020-12-09 06:04:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:04:29,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:04:29,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895661917] [2020-12-09 06:04:29,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:04:29,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 06:04:29,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716162171] [2020-12-09 06:04:29,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 06:04:29,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:04:29,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 06:04:29,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:04:29,945 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand 10 states. [2020-12-09 06:04:31,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:04:31,226 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-12-09 06:04:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-09 06:04:31,226 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-12-09 06:04:31,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:04:31,227 INFO L225 Difference]: With dead ends: 135 [2020-12-09 06:04:31,227 INFO L226 Difference]: Without dead ends: 135 [2020-12-09 06:04:31,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-12-09 06:04:31,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-09 06:04:31,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2020-12-09 06:04:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-09 06:04:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2020-12-09 06:04:31,229 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 14 [2020-12-09 06:04:31,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:04:31,230 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2020-12-09 06:04:31,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 06:04:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2020-12-09 06:04:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 06:04:31,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:04:31,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:04:31,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 06:04:31,432 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr60REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr59REQUIRES_VIOLATION, ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-12-09 06:04:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:04:31,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1308981093, now seen corresponding path program 1 times [2020-12-09 06:04:31,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:04:31,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838090508] [2020-12-09 06:04:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b363a5f-5564-44c9-b2c1-7e11360c2b66/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 06:04:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:04:31,532 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:04:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:04:31,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:04:31,586 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 06:04:31,586 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:04:31,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 06:04:31,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:04:31 BoogieIcfgContainer [2020-12-09 06:04:31,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:04:31,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:04:31,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:04:31,838 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:04:31,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:04:21" (3/4) ... [2020-12-09 06:04:31,841 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 06:04:31,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:04:31,842 INFO L168 Benchmark]: Toolchain (without parser) took 11302.65 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 76.3 MB in the beginning and 68.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:04:31,842 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 46.1 MB. Free memory was 29.3 MB in the beginning and 29.2 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:04:31,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.28 ms. Allocated memory is still 92.3 MB. Free memory was 76.0 MB in the beginning and 62.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 06:04:31,843 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.14 ms. Allocated memory is still 92.3 MB. Free memory was 62.3 MB in the beginning and 60.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:04:31,843 INFO L168 Benchmark]: Boogie Preprocessor took 29.62 ms. Allocated memory is still 92.3 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:04:31,843 INFO L168 Benchmark]: RCFGBuilder took 643.06 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 68.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:04:31,844 INFO L168 Benchmark]: TraceAbstraction took 10256.53 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 67.6 MB in the beginning and 68.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:04:31,844 INFO L168 Benchmark]: Witness Printer took 3.21 ms. Allocated memory is still 121.6 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:04:31,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 46.1 MB. Free memory was 29.3 MB in the beginning and 29.2 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.28 ms. Allocated memory is still 92.3 MB. Free memory was 76.0 MB in the beginning and 62.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.14 ms. Allocated memory is still 92.3 MB. Free memory was 62.3 MB in the beginning and 60.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.62 ms. Allocated memory is still 92.3 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 643.06 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 68.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10256.53 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 67.6 MB in the beginning and 68.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.21 ms. Allocated memory is still 121.6 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1051]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1051. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) [L1007] list->prev = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list [L1040] COND FALSE !(!(((void*)0) != end)) [L1041] EXPR end->colour [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end [L1045] EXPR end->colour [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next [L1051] COND TRUE !(end->next) [L1051] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 134 locations, 65 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 755 SDtfs, 1301 SDslu, 1036 SDs, 0 SdLazy, 2148 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=0, 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, 10 MinimizatonAttempts, 297 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 83 ConstructedInterpolants, 7 QuantifiedInterpolants, 8590 SizeOfPredicates, 48 NumberOfNonLiveVariables, 606 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...