./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7c4dde0ada366116691c2f175a080cab4880a7b4b6a5f42c97520b77f10420a ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7c4dde0ada366116691c2f175a080cab4880a7b4b6a5f42c97520b77f10420a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:11:34,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:11:34,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:11:34,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:11:34,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:11:34,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:11:34,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:11:34,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:11:34,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:11:34,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:11:34,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:11:34,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:11:34,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:11:34,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:11:34,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:11:34,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:11:34,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:11:34,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:11:34,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:11:34,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:11:34,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:11:34,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:11:34,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:11:34,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:11:34,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:11:34,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:11:34,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:11:34,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:11:34,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:11:34,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:11:34,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:11:34,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:11:34,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:11:34,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:11:34,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:11:34,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:11:34,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:11:34,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:11:34,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:11:34,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:11:34,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:11:34,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:11:34,318 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:11:34,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:11:34,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:11:34,320 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:11:34,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:11:34,320 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:11:34,321 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:11:34,321 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:11:34,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:11:34,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:11:34,321 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:11:34,321 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:11:34,322 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:11:34,322 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:11:34,322 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:11:34,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:11:34,327 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:11:34,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:11:34,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:11:34,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:11:34,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:11:34,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:11:34,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:11:34,329 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:11:34,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:11:34,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:11:34,329 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:11:34,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:11:34,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:11:34,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:11:34,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:11:34,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:11:34,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:11:34,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:11:34,333 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:11:34,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:11:34,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:11:34,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:11:34,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:11:34,334 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7c4dde0ada366116691c2f175a080cab4880a7b4b6a5f42c97520b77f10420a [2021-10-20 05:11:34,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:11:34,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:11:34,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:11:34,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:11:34,630 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:11:34,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2021-10-20 05:11:34,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/data/148dc1534/83d17943fc714a13ba4f6fe72be36afc/FLAGf862b8711 [2021-10-20 05:11:35,266 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:11:35,267 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2021-10-20 05:11:35,292 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/data/148dc1534/83d17943fc714a13ba4f6fe72be36afc/FLAGf862b8711 [2021-10-20 05:11:35,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/data/148dc1534/83d17943fc714a13ba4f6fe72be36afc [2021-10-20 05:11:35,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:11:35,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:11:35,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:11:35,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:11:35,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:11:35,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:11:35" (1/1) ... [2021-10-20 05:11:35,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c9f4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:35, skipping insertion in model container [2021-10-20 05:11:35,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:11:35" (1/1) ... [2021-10-20 05:11:35,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:11:35,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:11:35,962 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c[18430,18443] [2021-10-20 05:11:35,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:11:35,977 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-20 05:11:35,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b8e6eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:35, skipping insertion in model container [2021-10-20 05:11:35,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:11:35,978 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-20 05:11:35,980 INFO L168 Benchmark]: Toolchain (without parser) took 383.26 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 50.5 MB in the beginning and 86.6 MB in the end (delta: -36.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:35,981 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 36.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:11:35,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.45 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 50.3 MB in the beginning and 86.6 MB in the end (delta: -36.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:35,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 36.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 379.45 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 50.3 MB in the beginning and 86.6 MB in the end (delta: -36.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 211]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:11:38,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:11:38,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:11:38,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:11:38,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:11:38,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:11:38,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:11:38,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:11:38,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:11:38,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:11:38,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:11:38,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:11:38,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:11:38,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:11:38,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:11:38,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:11:38,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:11:38,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:11:38,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:11:38,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:11:38,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:11:38,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:11:38,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:11:38,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:11:38,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:11:38,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:11:38,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:11:38,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:11:38,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:11:38,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:11:38,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:11:38,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:11:38,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:11:38,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:11:38,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:11:38,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:11:38,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:11:38,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:11:38,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:11:38,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:11:38,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:11:38,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-20 05:11:38,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:11:38,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:11:38,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:11:38,477 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:11:38,477 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:11:38,478 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:11:38,478 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:11:38,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:11:38,478 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:11:38,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:11:38,481 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:11:38,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:11:38,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:11:38,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:11:38,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:11:38,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:11:38,482 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:11:38,482 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:11:38,482 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:11:38,483 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:11:38,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:11:38,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:11:38,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:11:38,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:11:38,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:11:38,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:11:38,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:11:38,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:11:38,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:11:38,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:11:38,485 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:11:38,485 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:11:38,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:11:38,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:11:38,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:11:38,486 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_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7c4dde0ada366116691c2f175a080cab4880a7b4b6a5f42c97520b77f10420a [2021-10-20 05:11:38,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:11:38,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:11:38,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:11:38,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:11:38,927 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:11:38,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2021-10-20 05:11:39,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/data/8694e021f/52eb7a17869b4c2a92e2ddbdf1838649/FLAG3e5454738 [2021-10-20 05:11:39,543 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:11:39,546 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2021-10-20 05:11:39,566 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/data/8694e021f/52eb7a17869b4c2a92e2ddbdf1838649/FLAG3e5454738 [2021-10-20 05:11:39,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/data/8694e021f/52eb7a17869b4c2a92e2ddbdf1838649 [2021-10-20 05:11:39,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:11:39,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:11:39,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:11:39,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:11:39,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:11:39,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:11:39" (1/1) ... [2021-10-20 05:11:39,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e39ce9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:39, skipping insertion in model container [2021-10-20 05:11:39,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:11:39" (1/1) ... [2021-10-20 05:11:39,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:11:39,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:11:40,339 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c[18430,18443] [2021-10-20 05:11:40,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:11:40,356 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-20 05:11:40,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:11:40,442 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c[18430,18443] [2021-10-20 05:11:40,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:11:40,453 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:11:40,535 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c[18430,18443] [2021-10-20 05:11:40,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:11:40,565 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:11:40,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40 WrapperNode [2021-10-20 05:11:40,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:11:40,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:11:40,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:11:40,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:11:40,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40" (1/1) ... [2021-10-20 05:11:40,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40" (1/1) ... [2021-10-20 05:11:40,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:11:40,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:11:40,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:11:40,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:11:40,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40" (1/1) ... [2021-10-20 05:11:40,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40" (1/1) ... [2021-10-20 05:11:40,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40" (1/1) ... [2021-10-20 05:11:40,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40" (1/1) ... [2021-10-20 05:11:40,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40" (1/1) ... [2021-10-20 05:11:40,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40" (1/1) ... [2021-10-20 05:11:40,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40" (1/1) ... [2021-10-20 05:11:40,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:11:40,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:11:40,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:11:40,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:11:40,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40" (1/1) ... [2021-10-20 05:11:40,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:11:40,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:11:40,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:11:40,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:11:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:11:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 05:11:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:11:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:11:43,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:11:43,350 INFO L299 CfgBuilder]: Removed 156 assume(true) statements. [2021-10-20 05:11:43,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:11:43 BoogieIcfgContainer [2021-10-20 05:11:43,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:11:43,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:11:43,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:11:43,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:11:43,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:11:39" (1/3) ... [2021-10-20 05:11:43,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0a4dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:11:43, skipping insertion in model container [2021-10-20 05:11:43,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:11:40" (2/3) ... [2021-10-20 05:11:43,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0a4dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:11:43, skipping insertion in model container [2021-10-20 05:11:43,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:11:43" (3/3) ... [2021-10-20 05:11:43,360 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2021-10-20 05:11:43,371 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:11:43,371 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-20 05:11:43,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:11:43,419 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:11:43,420 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-20 05:11:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 113 states have (on average 1.5663716814159292) internal successors, (177), 116 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 05:11:43,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:11:43,444 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:11:43,445 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:11:43,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:11:43,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1641629540, now seen corresponding path program 1 times [2021-10-20 05:11:43,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:11:43,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721985517] [2021-10-20 05:11:43,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:11:43,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:11:43,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:11:43,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:11:43,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:11:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:11:43,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-20 05:11:43,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:11:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:43,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:11:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:43,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:11:43,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721985517] [2021-10-20 05:11:43,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721985517] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:11:43,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:11:43,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 05:11:43,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85670382] [2021-10-20 05:11:43,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:11:43,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:11:43,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:11:43,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:11:43,818 INFO L87 Difference]: Start difference. First operand has 117 states, 113 states have (on average 1.5663716814159292) internal successors, (177), 116 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:11:43,858 INFO L93 Difference]: Finished difference Result 228 states and 347 transitions. [2021-10-20 05:11:43,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:11:43,859 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-20 05:11:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:11:43,869 INFO L225 Difference]: With dead ends: 228 [2021-10-20 05:11:43,869 INFO L226 Difference]: Without dead ends: 113 [2021-10-20 05:11:43,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:11:43,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-20 05:11:43,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-20 05:11:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 110 states have (on average 1.5) internal successors, (165), 112 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2021-10-20 05:11:43,917 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 16 [2021-10-20 05:11:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:11:43,917 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-10-20 05:11:43,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2021-10-20 05:11:43,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-20 05:11:43,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:11:43,919 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:11:43,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:11:44,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:11:44,142 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:11:44,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:11:44,143 INFO L82 PathProgramCache]: Analyzing trace with hash 594872643, now seen corresponding path program 1 times [2021-10-20 05:11:44,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:11:44,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967789863] [2021-10-20 05:11:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:11:44,144 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:11:44,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:11:44,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:11:44,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:11:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:11:44,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:11:44,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:11:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:44,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:11:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:44,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:11:44,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967789863] [2021-10-20 05:11:44,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967789863] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:11:44,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:11:44,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 05:11:44,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438273611] [2021-10-20 05:11:44,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:11:44,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:11:44,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:11:44,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:11:44,493 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:44,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:11:44,508 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2021-10-20 05:11:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:11:44,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-20 05:11:44,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:11:44,510 INFO L225 Difference]: With dead ends: 113 [2021-10-20 05:11:44,510 INFO L226 Difference]: Without dead ends: 47 [2021-10-20 05:11:44,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:11:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-20 05:11:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-20 05:11:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 46 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2021-10-20 05:11:44,519 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2021-10-20 05:11:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:11:44,519 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2021-10-20 05:11:44,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2021-10-20 05:11:44,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-20 05:11:44,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:11:44,521 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:11:44,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-20 05:11:44,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:11:44,734 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:11:44,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:11:44,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1404483435, now seen corresponding path program 1 times [2021-10-20 05:11:44,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:11:44,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688042694] [2021-10-20 05:11:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:11:44,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:11:44,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:11:44,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:11:44,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 05:11:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:11:44,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:11:44,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:11:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:45,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:11:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:45,124 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:11:45,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688042694] [2021-10-20 05:11:45,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688042694] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:11:45,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:11:45,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-20 05:11:45,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259847035] [2021-10-20 05:11:45,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:11:45,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:11:45,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:11:45,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:11:45,131 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:45,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:11:45,162 INFO L93 Difference]: Finished difference Result 88 states and 130 transitions. [2021-10-20 05:11:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:11:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-20 05:11:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:11:45,165 INFO L225 Difference]: With dead ends: 88 [2021-10-20 05:11:45,167 INFO L226 Difference]: Without dead ends: 47 [2021-10-20 05:11:45,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:11:45,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-20 05:11:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-20 05:11:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 46 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2021-10-20 05:11:45,179 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2021-10-20 05:11:45,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:11:45,180 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2021-10-20 05:11:45,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2021-10-20 05:11:45,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-20 05:11:45,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:11:45,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:11:45,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:11:45,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:11:45,397 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:11:45,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:11:45,398 INFO L82 PathProgramCache]: Analyzing trace with hash -764351347, now seen corresponding path program 1 times [2021-10-20 05:11:45,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:11:45,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311313822] [2021-10-20 05:11:45,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:11:45,399 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:11:45,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:11:45,400 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:11:45,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-20 05:11:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:11:45,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:11:45,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:11:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:45,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:11:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:45,735 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:11:45,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311313822] [2021-10-20 05:11:45,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311313822] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:11:45,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:11:45,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 05:11:45,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597751190] [2021-10-20 05:11:45,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:11:45,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:11:45,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:11:45,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:11:45,738 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:45,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:11:45,811 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2021-10-20 05:11:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:11:45,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-20 05:11:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:11:45,813 INFO L225 Difference]: With dead ends: 109 [2021-10-20 05:11:45,813 INFO L226 Difference]: Without dead ends: 68 [2021-10-20 05:11:45,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:11:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-20 05:11:45,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-10-20 05:11:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 65 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2021-10-20 05:11:45,824 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 24 [2021-10-20 05:11:45,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:11:45,824 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2021-10-20 05:11:45,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2021-10-20 05:11:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-20 05:11:45,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:11:45,826 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:11:45,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-20 05:11:46,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:11:46,038 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:11:46,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:11:46,039 INFO L82 PathProgramCache]: Analyzing trace with hash -805303330, now seen corresponding path program 1 times [2021-10-20 05:11:46,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:11:46,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544410673] [2021-10-20 05:11:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:11:46,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:11:46,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:11:46,042 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:11:46,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-20 05:11:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:11:46,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:11:46,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:11:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:46,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:11:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:46,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:11:46,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544410673] [2021-10-20 05:11:46,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544410673] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:11:46,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:11:46,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-20 05:11:46,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002991249] [2021-10-20 05:11:46,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:11:46,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:11:46,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:11:46,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:11:46,436 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:46,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:11:46,517 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2021-10-20 05:11:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 05:11:46,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-20 05:11:46,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:11:46,520 INFO L225 Difference]: With dead ends: 175 [2021-10-20 05:11:46,520 INFO L226 Difference]: Without dead ends: 115 [2021-10-20 05:11:46,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:11:46,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-20 05:11:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2021-10-20 05:11:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 71 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2021-10-20 05:11:46,548 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 30 [2021-10-20 05:11:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:11:46,549 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2021-10-20 05:11:46,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2021-10-20 05:11:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-20 05:11:46,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:11:46,555 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:11:46,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-20 05:11:46,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:11:46,777 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:11:46,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:11:46,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1857207713, now seen corresponding path program 1 times [2021-10-20 05:11:46,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:11:46,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026836922] [2021-10-20 05:11:46,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:11:46,779 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:11:46,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:11:46,780 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:11:46,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 05:11:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:11:47,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:11:47,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:11:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:47,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:11:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:47,247 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:11:47,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026836922] [2021-10-20 05:11:47,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026836922] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:11:47,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:11:47,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-20 05:11:47,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216122269] [2021-10-20 05:11:47,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:11:47,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:11:47,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:11:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:11:47,253 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:47,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:11:47,346 INFO L93 Difference]: Finished difference Result 382 states and 538 transitions. [2021-10-20 05:11:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-20 05:11:47,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-20 05:11:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:11:47,350 INFO L225 Difference]: With dead ends: 382 [2021-10-20 05:11:47,350 INFO L226 Difference]: Without dead ends: 316 [2021-10-20 05:11:47,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:11:47,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-20 05:11:47,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 132. [2021-10-20 05:11:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.381679389312977) internal successors, (181), 131 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 181 transitions. [2021-10-20 05:11:47,390 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 181 transitions. Word has length 30 [2021-10-20 05:11:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:11:47,391 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 181 transitions. [2021-10-20 05:11:47,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:47,391 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 181 transitions. [2021-10-20 05:11:47,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-20 05:11:47,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:11:47,392 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:11:47,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-20 05:11:47,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:11:47,605 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:11:47,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:11:47,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1765991081, now seen corresponding path program 1 times [2021-10-20 05:11:47,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:11:47,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126344323] [2021-10-20 05:11:47,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:11:47,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:11:47,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:11:47,608 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:11:47,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-20 05:11:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:11:47,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:11:47,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:11:47,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:47,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:11:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:48,067 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:11:48,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126344323] [2021-10-20 05:11:48,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126344323] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:11:48,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:11:48,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-20 05:11:48,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489892367] [2021-10-20 05:11:48,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:11:48,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:11:48,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:11:48,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:11:48,069 INFO L87 Difference]: Start difference. First operand 132 states and 181 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:48,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:11:48,228 INFO L93 Difference]: Finished difference Result 378 states and 520 transitions. [2021-10-20 05:11:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-20 05:11:48,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-20 05:11:48,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:11:48,233 INFO L225 Difference]: With dead ends: 378 [2021-10-20 05:11:48,233 INFO L226 Difference]: Without dead ends: 376 [2021-10-20 05:11:48,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:11:48,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-10-20 05:11:48,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 132. [2021-10-20 05:11:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3740458015267176) internal successors, (180), 131 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2021-10-20 05:11:48,263 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 31 [2021-10-20 05:11:48,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:11:48,263 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2021-10-20 05:11:48,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2021-10-20 05:11:48,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-20 05:11:48,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:11:48,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:11:48,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-20 05:11:48,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:11:48,493 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:11:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:11:48,494 INFO L82 PathProgramCache]: Analyzing trace with hash -526561838, now seen corresponding path program 1 times [2021-10-20 05:11:48,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:11:48,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85932171] [2021-10-20 05:11:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:11:48,495 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:11:48,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:11:48,502 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:11:48,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-20 05:11:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:11:48,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 05:11:48,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:11:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:48,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:11:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:48,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:11:48,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85932171] [2021-10-20 05:11:48,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85932171] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:11:48,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:11:48,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-20 05:11:48,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302712584] [2021-10-20 05:11:48,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 05:11:48,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:11:48,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 05:11:48,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:11:48,934 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:11:49,003 INFO L93 Difference]: Finished difference Result 354 states and 478 transitions. [2021-10-20 05:11:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:11:49,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-20 05:11:49,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:11:49,006 INFO L225 Difference]: With dead ends: 354 [2021-10-20 05:11:49,006 INFO L226 Difference]: Without dead ends: 228 [2021-10-20 05:11:49,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:11:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-20 05:11:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 140. [2021-10-20 05:11:49,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.3525179856115108) internal successors, (188), 139 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2021-10-20 05:11:49,024 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 31 [2021-10-20 05:11:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:11:49,025 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2021-10-20 05:11:49,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2021-10-20 05:11:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-20 05:11:49,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:11:49,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:11:49,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-20 05:11:49,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:11:49,239 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:11:49,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:11:49,239 INFO L82 PathProgramCache]: Analyzing trace with hash -268396400, now seen corresponding path program 1 times [2021-10-20 05:11:49,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:11:49,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250824646] [2021-10-20 05:11:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:11:49,240 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:11:49,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:11:49,241 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:11:49,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-20 05:11:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:11:49,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:11:49,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:11:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:49,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:11:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:11:49,745 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:11:49,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250824646] [2021-10-20 05:11:49,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250824646] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:11:49,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:11:49,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-20 05:11:49,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883349411] [2021-10-20 05:11:49,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:11:49,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:11:49,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:11:49,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:11:49,748 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:49,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:11:49,819 INFO L93 Difference]: Finished difference Result 430 states and 580 transitions. [2021-10-20 05:11:49,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:11:49,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-20 05:11:49,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:11:49,821 INFO L225 Difference]: With dead ends: 430 [2021-10-20 05:11:49,822 INFO L226 Difference]: Without dead ends: 296 [2021-10-20 05:11:49,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:11:49,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-20 05:11:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 244. [2021-10-20 05:11:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.337448559670782) internal successors, (325), 243 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 325 transitions. [2021-10-20 05:11:49,858 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 325 transitions. Word has length 31 [2021-10-20 05:11:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:11:49,858 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 325 transitions. [2021-10-20 05:11:49,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 325 transitions. [2021-10-20 05:11:49,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-20 05:11:49,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:11:49,860 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:11:49,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-20 05:11:50,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:11:50,072 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:11:50,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:11:50,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1913811026, now seen corresponding path program 1 times [2021-10-20 05:11:50,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:11:50,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724024456] [2021-10-20 05:11:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:11:50,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:11:50,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:11:50,074 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:11:50,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-20 05:11:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:11:51,559 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:11:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:11:52,577 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-20 05:11:52,577 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:11:52,578 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:11:52,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:11:52,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:11:52,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-20 05:11:52,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:11:52,804 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:11:52,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:11:52 BoogieIcfgContainer [2021-10-20 05:11:52,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:11:52,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:11:52,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:11:52,937 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:11:52,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:11:43" (3/4) ... [2021-10-20 05:11:52,940 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 05:11:53,031 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:11:53,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:11:53,033 INFO L168 Benchmark]: Toolchain (without parser) took 13170.75 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 35.3 MB in the beginning and 58.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:53,033 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory is still 39.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:11:53,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.31 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.1 MB in the beginning and 38.1 MB in the end (delta: -3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:53,034 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.26 ms. Allocated memory is still 71.3 MB. Free memory was 38.1 MB in the beginning and 52.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:53,034 INFO L168 Benchmark]: Boogie Preprocessor took 49.33 ms. Allocated memory is still 71.3 MB. Free memory was 52.2 MB in the beginning and 49.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:53,035 INFO L168 Benchmark]: RCFGBuilder took 2623.25 ms. Allocated memory is still 71.3 MB. Free memory was 49.3 MB in the beginning and 31.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:53,035 INFO L168 Benchmark]: TraceAbstraction took 9571.67 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 30.6 MB in the beginning and 30.9 MB in the end (delta: -280.5 kB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:53,036 INFO L168 Benchmark]: Witness Printer took 105.32 ms. Allocated memory is still 88.1 MB. Free memory was 30.9 MB in the beginning and 58.5 MB in the end (delta: -27.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:53,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory is still 39.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 700.31 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.1 MB in the beginning and 38.1 MB in the end (delta: -3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.26 ms. Allocated memory is still 71.3 MB. Free memory was 38.1 MB in the beginning and 52.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.33 ms. Allocated memory is still 71.3 MB. Free memory was 52.2 MB in the beginning and 49.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2623.25 ms. Allocated memory is still 71.3 MB. Free memory was 49.3 MB in the beginning and 31.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9571.67 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 30.6 MB in the beginning and 30.9 MB in the end (delta: -280.5 kB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * Witness Printer took 105.32 ms. Allocated memory is still 88.1 MB. Free memory was 30.9 MB in the beginning and 58.5 MB in the end (delta: -27.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 960]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L79] int cleanupTimeShifts = 4; [L352] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L160] int retValue_acc ; [L161] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L843] int retValue_acc ; [L846] retValue_acc = 1 [L847] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L167] tmp = valid_product() [L169] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L753] int splverifierCounter ; [L754] int tmp ; [L755] int tmp___0 ; [L756] int tmp___1 ; [L757] int tmp___2 ; [L760] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L762] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L764] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L770] tmp = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L780] tmp___0 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L883] COND FALSE !(\read(methaneLevelCritical)) [L886] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L790] tmp___2 = __VERIFIER_nondet_int() [L792] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L562] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L569] COND TRUE \read(systemActive) [L617] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L620] COND FALSE !(\read(pumpRunning)) [L591] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L594] COND TRUE ! pumpRunning [L714] int retValue_acc ; [L715] int tmp ; [L716] int tmp___0 ; [L933] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L720] tmp = isHighWaterSensorDry() [L722] COND FALSE !(\read(tmp)) [L725] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L727] retValue_acc = tmp___0 [L728] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L645] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L54] int tmp ; [L55] int tmp___0 ; [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L59] tmp = isMethaneLevelCritical() [L61] COND TRUE \read(tmp) [L669] int retValue_acc ; [L672] retValue_acc = pumpRunning [L673] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L960] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 960]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 960]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 117 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9390.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 26.9ms, AutomataDifference: 709.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 847 SDtfs, 1050 SDslu, 1172 SDs, 0 SdLazy, 153 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 222.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 462 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 171.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=9, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 203.7ms AutomataMinimizationTime, 9 MinimizatonAttempts, 613 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 211.6ms SsaConstructionTime, 2347.6ms SatisfiabilityAnalysisTime, 1640.0ms InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 446 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1824 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 proved your program to be incorrect! [2021-10-20 05:11:53,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e7e3b6-8eda-4e63-9062-5f6b25377e68/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...