./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG --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 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b ............................................................................................................................................ 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_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG --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 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-29 04:57:46,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:57:46,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:57:46,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:57:46,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:57:46,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:57:46,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:57:46,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:57:46,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:57:46,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:57:46,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:57:46,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:57:46,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:57:46,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:57:46,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:57:46,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:57:46,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:57:46,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:57:46,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:57:46,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:57:46,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:57:46,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:57:46,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:57:46,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:57:46,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:57:46,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:57:46,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:57:46,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:57:46,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:57:46,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:57:46,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:57:46,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:57:46,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:57:46,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:57:46,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:57:46,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:57:46,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:57:46,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:57:46,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:57:46,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:57:46,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:57:46,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:57:46,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:57:46,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:57:46,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:57:46,338 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:57:46,338 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:57:46,338 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:57:46,339 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:57:46,339 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:57:46,345 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:57:46,345 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:57:46,347 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:57:46,347 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:57:46,347 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:57:46,347 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:57:46,348 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:57:46,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:57:46,349 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:57:46,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:57:46,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:57:46,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:57:46,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:57:46,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:57:46,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:57:46,350 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:57:46,350 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:57:46,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:57:46,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:57:46,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:57:46,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:57:46,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:57:46,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:57:46,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:57:46,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:57:46,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:57:46,354 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:57:46,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:57:46,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:57:46,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:57:46,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:57:46,355 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_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b [2021-10-29 04:57:46,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:57:46,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:57:46,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:57:46,724 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:57:46,728 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:57:46,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-10-29 04:57:46,825 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/data/7c58b895a/b4d351eb40ca458abbaf53a262fe7901/FLAGb62d4b82f [2021-10-29 04:57:47,398 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:57:47,398 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-10-29 04:57:47,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/data/7c58b895a/b4d351eb40ca458abbaf53a262fe7901/FLAGb62d4b82f [2021-10-29 04:57:47,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/data/7c58b895a/b4d351eb40ca458abbaf53a262fe7901 [2021-10-29 04:57:47,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:57:47,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:57:47,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:47,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:57:47,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:57:47,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:47" (1/1) ... [2021-10-29 04:57:47,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd13ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:47, skipping insertion in model container [2021-10-29 04:57:47,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:47" (1/1) ... [2021-10-29 04:57:47,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:57:47,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:57:47,991 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_74ec0f3b-007f-4eb2-8e1b-ca40309946de/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-10-29 04:57:48,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:48,074 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) [2021-10-29 04:57:48,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f01dc65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:48, skipping insertion in model container [2021-10-29 04:57:48,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:48,075 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 04:57:48,077 INFO L168 Benchmark]: Toolchain (without parser) took 361.36 ms. Allocated memory is still 102.8 MB. Free memory was 63.3 MB in the beginning and 75.6 MB in the end (delta: -12.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:48,078 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 102.8 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:57:48,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.78 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 76.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:48,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 102.8 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.78 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 76.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 582]: 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-b2eff8b [2021-10-29 04:57:50,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:57:50,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:57:50,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:57:50,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:57:50,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:57:50,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:57:50,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:57:50,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:57:50,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:57:50,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:57:50,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:57:50,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:57:50,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:57:50,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:57:50,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:57:50,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:57:50,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:57:50,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:57:50,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:57:50,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:57:50,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:57:50,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:57:50,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:57:50,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:57:50,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:57:50,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:57:50,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:57:50,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:57:50,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:57:50,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:57:50,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:57:50,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:57:50,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:57:50,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:57:50,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:57:50,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:57:50,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:57:50,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:57:50,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:57:50,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:57:50,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 04:57:50,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:57:50,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:57:50,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:57:50,512 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:57:50,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:57:50,512 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:57:50,512 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:57:50,513 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:57:50,513 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:57:50,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:57:50,514 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:57:50,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:57:50,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:57:50,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:57:50,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:57:50,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:57:50,515 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:57:50,516 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:57:50,516 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:57:50,516 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:57:50,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:57:50,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:57:50,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:57:50,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:57:50,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:57:50,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:57:50,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:57:50,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:57:50,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:57:50,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:57:50,519 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:57:50,519 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:57:50,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:57:50,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:57:50,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:57:50,520 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_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b [2021-10-29 04:57:50,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:57:50,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:57:50,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:57:50,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:57:50,929 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:57:50,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-10-29 04:57:51,006 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/data/e8530140c/71a2b48f21cf4f07bf8d9f621ebf28b8/FLAGa147108e3 [2021-10-29 04:57:51,681 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:57:51,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-10-29 04:57:51,695 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/data/e8530140c/71a2b48f21cf4f07bf8d9f621ebf28b8/FLAGa147108e3 [2021-10-29 04:57:51,972 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/data/e8530140c/71a2b48f21cf4f07bf8d9f621ebf28b8 [2021-10-29 04:57:51,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:57:51,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:57:51,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:51,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:57:51,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:57:51,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:51" (1/1) ... [2021-10-29 04:57:51,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e99eec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:51, skipping insertion in model container [2021-10-29 04:57:51,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:51" (1/1) ... [2021-10-29 04:57:51,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:57:52,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:57:52,320 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_74ec0f3b-007f-4eb2-8e1b-ca40309946de/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-10-29 04:57:52,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:52,470 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 04:57:52,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:57:52,518 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_74ec0f3b-007f-4eb2-8e1b-ca40309946de/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-10-29 04:57:52,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:52,605 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:57:52,637 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_74ec0f3b-007f-4eb2-8e1b-ca40309946de/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-10-29 04:57:52,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:52,711 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:57:52,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52 WrapperNode [2021-10-29 04:57:52,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:52,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:57:52,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:57:52,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:57:52,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52" (1/1) ... [2021-10-29 04:57:52,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52" (1/1) ... [2021-10-29 04:57:52,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:57:52,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:57:52,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:57:52,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:57:52,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52" (1/1) ... [2021-10-29 04:57:52,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52" (1/1) ... [2021-10-29 04:57:52,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52" (1/1) ... [2021-10-29 04:57:52,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52" (1/1) ... [2021-10-29 04:57:52,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52" (1/1) ... [2021-10-29 04:57:52,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52" (1/1) ... [2021-10-29 04:57:52,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52" (1/1) ... [2021-10-29 04:57:52,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:57:52,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:57:52,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:57:52,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:57:52,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52" (1/1) ... [2021-10-29 04:57:52,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:57:52,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:52,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:57:52,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:57:52,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:57:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:57:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:57:52,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:57:55,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:57:55,305 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-10-29 04:57:55,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:55 BoogieIcfgContainer [2021-10-29 04:57:55,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:57:55,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:57:55,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:57:55,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:57:55,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:57:51" (1/3) ... [2021-10-29 04:57:55,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c14960f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:57:55, skipping insertion in model container [2021-10-29 04:57:55,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:52" (2/3) ... [2021-10-29 04:57:55,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c14960f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:57:55, skipping insertion in model container [2021-10-29 04:57:55,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:55" (3/3) ... [2021-10-29 04:57:55,322 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2021-10-29 04:57:55,343 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:57:55,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 04:57:55,394 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:57:55,400 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 [2021-10-29 04:57:55,400 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 04:57:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 88 states have internal predecessors, (132), 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) [2021-10-29 04:57:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 04:57:55,423 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:55,424 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:55,425 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:57:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:55,431 INFO L85 PathProgramCache]: Analyzing trace with hash 929673937, now seen corresponding path program 1 times [2021-10-29 04:57:55,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:55,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942498588] [2021-10-29 04:57:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:55,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:55,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:55,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:55,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:57:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:55,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 04:57:55,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:55,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:55,764 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:55,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942498588] [2021-10-29 04:57:55,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942498588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:55,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:55,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:57:55,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350487165] [2021-10-29 04:57:55,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:57:55,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:55,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:57:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:57:55,789 INFO L87 Difference]: Start difference. First operand has 89 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 88 states have internal predecessors, (132), 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) [2021-10-29 04:57:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:55,814 INFO L93 Difference]: Finished difference Result 172 states and 257 transitions. [2021-10-29 04:57:55,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:57:55,815 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 [2021-10-29 04:57:55,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:55,825 INFO L225 Difference]: With dead ends: 172 [2021-10-29 04:57:55,826 INFO L226 Difference]: Without dead ends: 85 [2021-10-29 04:57:55,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:57:55,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-29 04:57:55,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-10-29 04:57:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 84 states have internal predecessors, (120), 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) [2021-10-29 04:57:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2021-10-29 04:57:55,868 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2021-10-29 04:57:55,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:55,869 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2021-10-29 04:57:55,869 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) [2021-10-29 04:57:55,869 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2021-10-29 04:57:55,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 04:57:55,870 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:55,870 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:55,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:56,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:56,084 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:57:56,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:56,085 INFO L85 PathProgramCache]: Analyzing trace with hash -117082960, now seen corresponding path program 1 times [2021-10-29 04:57:56,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:56,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873005275] [2021-10-29 04:57:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:56,086 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:56,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:56,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:56,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:57:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:56,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:57:56,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:56,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:56,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:56,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873005275] [2021-10-29 04:57:56,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873005275] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:56,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:56,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 04:57:56,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179016394] [2021-10-29 04:57:56,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:57:56,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:56,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:57:56,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:56,470 INFO L87 Difference]: Start difference. First operand 85 states and 120 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) [2021-10-29 04:57:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:56,497 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2021-10-29 04:57:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:57:56,498 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 [2021-10-29 04:57:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:56,500 INFO L225 Difference]: With dead ends: 85 [2021-10-29 04:57:56,500 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 04:57:56,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 04:57:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-29 04:57:56,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 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) [2021-10-29 04:57:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-10-29 04:57:56,518 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2021-10-29 04:57:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:56,519 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-10-29 04:57:56,520 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) [2021-10-29 04:57:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-10-29 04:57:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 04:57:56,522 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:56,527 INFO L513 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] [2021-10-29 04:57:56,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:56,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:56,741 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:57:56,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:56,741 INFO L85 PathProgramCache]: Analyzing trace with hash 337421565, now seen corresponding path program 1 times [2021-10-29 04:57:56,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:56,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929380155] [2021-10-29 04:57:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:56,743 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:56,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:56,744 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:56,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 04:57:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:57,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:57:57,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:57,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:57,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:57,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929380155] [2021-10-29 04:57:57,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929380155] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:57,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:57,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-29 04:57:57,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170299134] [2021-10-29 04:57:57,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:57:57,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:57,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:57:57,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:57,294 INFO L87 Difference]: Start difference. First operand 39 states and 55 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) [2021-10-29 04:57:57,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:57,335 INFO L93 Difference]: Finished difference Result 128 states and 187 transitions. [2021-10-29 04:57:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:57:57,336 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 [2021-10-29 04:57:57,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:57,338 INFO L225 Difference]: With dead ends: 128 [2021-10-29 04:57:57,339 INFO L226 Difference]: Without dead ends: 95 [2021-10-29 04:57:57,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:57,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-29 04:57:57,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 58. [2021-10-29 04:57:57,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 57 states have internal predecessors, (84), 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) [2021-10-29 04:57:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2021-10-29 04:57:57,371 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 22 [2021-10-29 04:57:57,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:57,372 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2021-10-29 04:57:57,372 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) [2021-10-29 04:57:57,373 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2021-10-29 04:57:57,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 04:57:57,374 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:57,374 INFO L513 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] [2021-10-29 04:57:57,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:57,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:57,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:57:57,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:57,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1224569535, now seen corresponding path program 1 times [2021-10-29 04:57:57,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:57,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907122022] [2021-10-29 04:57:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:57,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:57,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:57,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:57,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 04:57:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:57,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:57:57,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:57,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:57,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:57,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907122022] [2021-10-29 04:57:57,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907122022] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:57,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:57,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 04:57:57,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219768058] [2021-10-29 04:57:57,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:57:57,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:57,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:57:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:57:57,918 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-10-29 04:57:57,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:57,978 INFO L93 Difference]: Finished difference Result 131 states and 192 transitions. [2021-10-29 04:57:57,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:57:57,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-10-29 04:57:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:57,983 INFO L225 Difference]: With dead ends: 131 [2021-10-29 04:57:57,983 INFO L226 Difference]: Without dead ends: 79 [2021-10-29 04:57:57,984 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:57:57,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-29 04:57:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-10-29 04:57:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 76 states have internal predecessors, (109), 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) [2021-10-29 04:57:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2021-10-29 04:57:58,013 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 23 [2021-10-29 04:57:58,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:58,013 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2021-10-29 04:57:58,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-10-29 04:57:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2021-10-29 04:57:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 04:57:58,014 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:58,015 INFO L513 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] [2021-10-29 04:57:58,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:58,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:58,215 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:57:58,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:58,216 INFO L85 PathProgramCache]: Analyzing trace with hash -840484654, now seen corresponding path program 1 times [2021-10-29 04:57:58,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:58,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541985677] [2021-10-29 04:57:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:58,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:58,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:58,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:58,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 04:57:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:58,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:57:58,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:58,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:58,700 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:58,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541985677] [2021-10-29 04:57:58,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541985677] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:58,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:58,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 04:57:58,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320146202] [2021-10-29 04:57:58,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:57:58,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:58,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:57:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:57:58,708 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-10-29 04:57:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:58,988 INFO L93 Difference]: Finished difference Result 540 states and 790 transitions. [2021-10-29 04:57:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-29 04:57:58,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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 25 [2021-10-29 04:57:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:58,993 INFO L225 Difference]: With dead ends: 540 [2021-10-29 04:57:58,993 INFO L226 Difference]: Without dead ends: 469 [2021-10-29 04:57:58,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-29 04:57:58,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-10-29 04:57:59,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 198. [2021-10-29 04:57:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3959390862944163) internal successors, (275), 197 states have internal predecessors, (275), 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) [2021-10-29 04:57:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 275 transitions. [2021-10-29 04:57:59,052 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 275 transitions. Word has length 25 [2021-10-29 04:57:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:59,053 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 275 transitions. [2021-10-29 04:57:59,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-10-29 04:57:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 275 transitions. [2021-10-29 04:57:59,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-29 04:57:59,061 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:59,062 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:59,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:59,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:59,275 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:57:59,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash -249317709, now seen corresponding path program 1 times [2021-10-29 04:57:59,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:59,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913289321] [2021-10-29 04:57:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:59,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:59,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:59,278 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:59,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 04:57:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:59,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:57:59,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:59,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:59,830 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:59,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913289321] [2021-10-29 04:57:59,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913289321] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:57:59,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [291078301] [2021-10-29 04:57:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:59,831 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:57:59,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:57:59,833 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:57:59,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-29 04:58:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:58:00,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:58:00,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:58:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-29 04:58:00,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:58:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-29 04:58:00,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [291078301] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:58:00,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-29 04:58:00,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2021-10-29 04:58:00,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074827024] [2021-10-29 04:58:00,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:58:00,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:58:00,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:58:00,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-29 04:58:00,326 INFO L87 Difference]: Start difference. First operand 198 states and 275 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2021-10-29 04:58:00,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:58:00,519 INFO L93 Difference]: Finished difference Result 456 states and 644 transitions. [2021-10-29 04:58:00,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 04:58:00,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 40 [2021-10-29 04:58:00,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:58:00,522 INFO L225 Difference]: With dead ends: 456 [2021-10-29 04:58:00,522 INFO L226 Difference]: Without dead ends: 454 [2021-10-29 04:58:00,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-29 04:58:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-29 04:58:00,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 198. [2021-10-29 04:58:00,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.385786802030457) internal successors, (273), 197 states have internal predecessors, (273), 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) [2021-10-29 04:58:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 273 transitions. [2021-10-29 04:58:00,552 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 273 transitions. Word has length 40 [2021-10-29 04:58:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:58:00,552 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 273 transitions. [2021-10-29 04:58:00,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2021-10-29 04:58:00,553 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 273 transitions. [2021-10-29 04:58:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-29 04:58:00,554 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:58:00,554 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-29 04:58:00,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:00,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:00,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:58:00,959 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:58:00,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:58:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash -108849228, now seen corresponding path program 1 times [2021-10-29 04:58:00,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:58:00,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900188407] [2021-10-29 04:58:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:58:00,960 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:58:00,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:58:00,961 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:58:00,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 04:58:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:58:01,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:58:01,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:58:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:58:01,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:58:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:58:01,485 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:58:01,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900188407] [2021-10-29 04:58:01,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900188407] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:58:01,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:58:01,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 04:58:01,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670630391] [2021-10-29 04:58:01,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:58:01,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:58:01,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:58:01,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:58:01,487 INFO L87 Difference]: Start difference. First operand 198 states and 273 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2021-10-29 04:58:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:58:01,572 INFO L93 Difference]: Finished difference Result 610 states and 837 transitions. [2021-10-29 04:58:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:58:01,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 47 [2021-10-29 04:58:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:58:01,576 INFO L225 Difference]: With dead ends: 610 [2021-10-29 04:58:01,576 INFO L226 Difference]: Without dead ends: 418 [2021-10-29 04:58:01,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:58:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-29 04:58:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 207. [2021-10-29 04:58:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3689320388349515) internal successors, (282), 206 states have internal predecessors, (282), 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) [2021-10-29 04:58:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 282 transitions. [2021-10-29 04:58:01,604 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 282 transitions. Word has length 47 [2021-10-29 04:58:01,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:58:01,604 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 282 transitions. [2021-10-29 04:58:01,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2021-10-29 04:58:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 282 transitions. [2021-10-29 04:58:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-29 04:58:01,605 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:58:01,605 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-29 04:58:01,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:01,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:58:01,818 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:58:01,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:58:01,819 INFO L85 PathProgramCache]: Analyzing trace with hash -618322318, now seen corresponding path program 1 times [2021-10-29 04:58:01,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:58:01,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548977226] [2021-10-29 04:58:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:58:01,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:58:01,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:58:01,821 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:58:01,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 04:58:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:58:02,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 04:58:02,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:58:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:58:02,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:58:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:58:02,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:58:02,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548977226] [2021-10-29 04:58:02,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548977226] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:58:02,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:58:02,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 04:58:02,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421715619] [2021-10-29 04:58:02,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:58:02,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:58:02,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:58:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:58:02,346 INFO L87 Difference]: Start difference. First operand 207 states and 282 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-10-29 04:58:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:58:02,429 INFO L93 Difference]: Finished difference Result 542 states and 741 transitions. [2021-10-29 04:58:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:58:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 47 [2021-10-29 04:58:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:58:02,432 INFO L225 Difference]: With dead ends: 542 [2021-10-29 04:58:02,433 INFO L226 Difference]: Without dead ends: 341 [2021-10-29 04:58:02,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:58:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-10-29 04:58:02,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 180. [2021-10-29 04:58:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.3519553072625698) internal successors, (242), 179 states have internal predecessors, (242), 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) [2021-10-29 04:58:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 242 transitions. [2021-10-29 04:58:02,464 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 242 transitions. Word has length 47 [2021-10-29 04:58:02,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:58:02,464 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 242 transitions. [2021-10-29 04:58:02,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-10-29 04:58:02,465 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 242 transitions. [2021-10-29 04:58:02,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-29 04:58:02,466 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:58:02,466 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-29 04:58:02,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-29 04:58:02,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:58:02,678 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:58:02,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:58:02,678 INFO L85 PathProgramCache]: Analyzing trace with hash -423849614, now seen corresponding path program 1 times [2021-10-29 04:58:02,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:58:02,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800784742] [2021-10-29 04:58:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:58:02,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:58:02,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:58:02,680 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:58:02,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 04:58:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:58:02,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:58:02,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:58:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:58:03,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:58:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:58:03,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:58:03,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800784742] [2021-10-29 04:58:03,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800784742] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:58:03,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [12590401] [2021-10-29 04:58:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:58:03,398 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:58:03,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:58:03,403 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:58:03,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-29 04:58:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:58:03,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:58:03,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:58:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:58:03,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:58:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:58:04,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [12590401] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:58:04,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21250827] [2021-10-29 04:58:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:58:04,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:58:04,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:58:04,151 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:58:04,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-29 04:58:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:58:04,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:58:04,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:58:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:58:04,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:58:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:58:04,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21250827] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:58:04,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 04:58:04,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-29 04:58:04,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907282377] [2021-10-29 04:58:04,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 04:58:04,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:58:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 04:58:04,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:58:04,804 INFO L87 Difference]: Start difference. First operand 180 states and 242 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 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) [2021-10-29 04:58:06,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:58:06,540 INFO L93 Difference]: Finished difference Result 1066 states and 1487 transitions. [2021-10-29 04:58:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-29 04:58:06,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 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 48 [2021-10-29 04:58:06,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:58:06,546 INFO L225 Difference]: With dead ends: 1066 [2021-10-29 04:58:06,546 INFO L226 Difference]: Without dead ends: 933 [2021-10-29 04:58:06,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-10-29 04:58:06,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-10-29 04:58:06,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 300. [2021-10-29 04:58:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.37123745819398) internal successors, (410), 299 states have internal predecessors, (410), 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) [2021-10-29 04:58:06,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 410 transitions. [2021-10-29 04:58:06,598 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 410 transitions. Word has length 48 [2021-10-29 04:58:06,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:58:06,599 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 410 transitions. [2021-10-29 04:58:06,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 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) [2021-10-29 04:58:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 410 transitions. [2021-10-29 04:58:06,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-29 04:58:06,600 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:58:06,600 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:58:06,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:06,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:07,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:07,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt [2021-10-29 04:58:07,219 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:58:07,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:58:07,220 INFO L85 PathProgramCache]: Analyzing trace with hash -568509983, now seen corresponding path program 2 times [2021-10-29 04:58:07,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:58:07,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967844246] [2021-10-29 04:58:07,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 04:58:07,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:58:07,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:58:07,222 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:58:07,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-29 04:58:08,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 04:58:08,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-29 04:58:08,512 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:58:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:58:09,533 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 04:58:09,533 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:58:09,534 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:58:09,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:58:09,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:58:09,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:09,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:58:09,760 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:58:09,762 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:58:09,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:58:09 BoogieIcfgContainer [2021-10-29 04:58:09,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:58:09,982 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:58:09,982 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:58:09,982 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:58:09,983 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:55" (3/4) ... [2021-10-29 04:58:09,985 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:58:10,141 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:58:10,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:58:10,143 INFO L168 Benchmark]: Toolchain (without parser) took 18162.34 ms. Allocated memory was 67.1 MB in the beginning and 100.7 MB in the end (delta: 33.6 MB). Free memory was 45.9 MB in the beginning and 28.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 51.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:10,143 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 67.1 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:58:10,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.39 ms. Allocated memory is still 67.1 MB. Free memory was 45.7 MB in the beginning and 34.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:10,145 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.94 ms. Allocated memory is still 67.1 MB. Free memory was 34.4 MB in the beginning and 31.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:10,145 INFO L168 Benchmark]: Boogie Preprocessor took 79.82 ms. Allocated memory is still 67.1 MB. Free memory was 31.3 MB in the beginning and 48.3 MB in the end (delta: -17.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:10,145 INFO L168 Benchmark]: RCFGBuilder took 2425.37 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 48.3 MB in the beginning and 60.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:10,146 INFO L168 Benchmark]: TraceAbstraction took 14672.35 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 60.4 MB in the beginning and 53.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:10,146 INFO L168 Benchmark]: Witness Printer took 159.90 ms. Allocated memory is still 100.7 MB. Free memory was 53.4 MB in the beginning and 28.8 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:10,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 67.1 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 728.39 ms. Allocated memory is still 67.1 MB. Free memory was 45.7 MB in the beginning and 34.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.94 ms. Allocated memory is still 67.1 MB. Free memory was 34.4 MB in the beginning and 31.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.82 ms. Allocated memory is still 67.1 MB. Free memory was 31.3 MB in the beginning and 48.3 MB in the end (delta: -17.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2425.37 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 48.3 MB in the beginning and 60.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14672.35 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 60.4 MB in the beginning and 53.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. * Witness Printer took 159.90 ms. Allocated memory is still 100.7 MB. Free memory was 53.4 MB in the beginning and 28.8 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 320]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L130] int pumpRunning = 0; [L131] int systemActive = 1; [L325] int cleanupTimeShifts = 4; [L425] int waterLevel = 1; [L426] int methaneLevelCritical = 0; [L723] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L401] int retValue_acc ; [L402] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L545] int retValue_acc ; [L548] retValue_acc = 1 [L549] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L408] tmp = valid_product() [L410] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L73] tmp = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L443] COND TRUE waterLevel < 2 [L444] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L138] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L145] COND TRUE \read(systemActive) [L167] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L170] COND TRUE ! pumpRunning [L282] int retValue_acc ; [L283] int tmp ; [L284] int tmp___0 ; [L505] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L508] COND FALSE !(waterLevel < 2) [L512] retValue_acc = 0 [L513] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L288] tmp = isHighWaterSensorDry() [L290] COND FALSE !(\read(tmp)) [L293] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L295] retValue_acc = tmp___0 [L296] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L172] tmp = isHighWaterLevel() [L174] COND TRUE \read(tmp) [L201] int tmp ; [L226] int retValue_acc ; [L464] int retValue_acc ; [L467] retValue_acc = methaneLevelCritical [L468] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L230] retValue_acc = isMethaneLevelCritical() [L232] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L205] tmp = isMethaneAlarm() [L207] COND FALSE !(\read(tmp)) [L195] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L921] int tmp ; [L922] int tmp___0 ; [L496] int retValue_acc ; [L499] retValue_acc = waterLevel [L500] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L67] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L138] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L431] COND TRUE waterLevel > 0 [L432] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L145] COND TRUE \read(systemActive) [L167] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L170] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L921] int tmp ; [L922] int tmp___0 ; [L496] int retValue_acc ; [L499] retValue_acc = waterLevel [L500] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L138] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L431] COND TRUE waterLevel > 0 [L432] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L145] COND TRUE \read(systemActive) [L167] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L170] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L921] int tmp ; [L922] int tmp___0 ; [L496] int retValue_acc ; [L499] retValue_acc = waterLevel [L500] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L926] tmp = getWaterLevel() [L928] COND TRUE tmp == 0 [L237] int retValue_acc ; [L240] retValue_acc = pumpRunning [L241] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L930] tmp___0 = isPumpRunning() [L932] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L320] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 320]: 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: 320]: 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, 89 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 14.3s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 782 SDtfs, 1808 SDslu, 2014 SDs, 0 SdLazy, 328 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 857 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=300occurred in iteration=9, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1571 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 484 NumberOfCodeBlocks, 484 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 818 ConstructedInterpolants, 0 QuantifiedInterpolants, 1875 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2571 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 24 InterpolantComputations, 16 PerfectInterpolantSequences, 132/196 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! [2021-10-29 04:58:10,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ec0f3b-007f-4eb2-8e1b-ca40309946de/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...