./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8 --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 944b52f1c750b2b149a29532cc6e317483d681a8 ............................................................................................................................................ 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_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8 --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 944b52f1c750b2b149a29532cc6e317483d681a8 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-4e77c04 [2021-10-13 08:00:25,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:00:25,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:00:25,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:00:25,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:00:25,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:00:25,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:00:25,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:00:25,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:00:25,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:00:25,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:00:25,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:00:25,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:00:25,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:00:25,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:00:25,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:00:25,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:00:25,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:00:25,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:00:25,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:00:25,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:00:25,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:00:25,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:00:25,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:00:25,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:00:25,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:00:25,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:00:25,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:00:25,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:00:25,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:00:25,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:00:25,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:00:25,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:00:25,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:00:25,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:00:25,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:00:25,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:00:25,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:00:25,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:00:25,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:00:25,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:00:25,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:00:25,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:00:25,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:00:25,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:00:25,320 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:00:25,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:00:25,321 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:00:25,321 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:00:25,329 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:00:25,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:00:25,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:00:25,331 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:00:25,331 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:00:25,331 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:00:25,332 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:00:25,332 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:00:25,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:00:25,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:00:25,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:00:25,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:00:25,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:00:25,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:00:25,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:00:25,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:00:25,335 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:00:25,335 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:00:25,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:00:25,336 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:00:25,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:00:25,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:00:25,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:00:25,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:00:25,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:00:25,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:00:25,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:00:25,338 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:00:25,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:00:25,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:00:25,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:00:25,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:00:25,339 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_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 944b52f1c750b2b149a29532cc6e317483d681a8 [2021-10-13 08:00:25,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:00:25,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:00:25,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:00:25,709 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:00:25,710 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:00:25,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-10-13 08:00:25,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/data/a6fea6509/7625c24ab08d4bcea67c25819f744727/FLAG7193178c9 [2021-10-13 08:00:26,434 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:00:26,435 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-10-13 08:00:26,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/data/a6fea6509/7625c24ab08d4bcea67c25819f744727/FLAG7193178c9 [2021-10-13 08:00:26,741 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/data/a6fea6509/7625c24ab08d4bcea67c25819f744727 [2021-10-13 08:00:26,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:00:26,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:00:26,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:00:26,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:00:26,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:00:26,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:00:26" (1/1) ... [2021-10-13 08:00:26,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2585e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:26, skipping insertion in model container [2021-10-13 08:00:26,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:00:26" (1/1) ... [2021-10-13 08:00:26,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:00:26,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:00:27,161 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_a9eca0e1-b1be-4425-ae72-40c8b89112b5/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15172,15185] [2021-10-13 08:00:27,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:00:27,198 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) [2021-10-13 08:00:27,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56696aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:27, skipping insertion in model container [2021-10-13 08:00:27,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:00:27,200 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 08:00:27,203 INFO L168 Benchmark]: Toolchain (without parser) took 456.13 ms. Allocated memory is still 121.6 MB. Free memory was 86.1 MB in the beginning and 93.3 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:27,204 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 46.2 MB in the beginning and 46.2 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:00:27,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.61 ms. Allocated memory is still 121.6 MB. Free memory was 85.8 MB in the beginning and 93.3 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:27,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 46.2 MB in the beginning and 46.2 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 452.61 ms. Allocated memory is still 121.6 MB. Free memory was 85.8 MB in the beginning and 93.3 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 108]: 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-4e77c04 [2021-10-13 08:00:29,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:00:29,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:00:30,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:00:30,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:00:30,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:00:30,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:00:30,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:00:30,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:00:30,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:00:30,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:00:30,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:00:30,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:00:30,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:00:30,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:00:30,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:00:30,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:00:30,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:00:30,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:00:30,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:00:30,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:00:30,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:00:30,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:00:30,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:00:30,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:00:30,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:00:30,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:00:30,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:00:30,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:00:30,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:00:30,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:00:30,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:00:30,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:00:30,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:00:30,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:00:30,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:00:30,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:00:30,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:00:30,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:00:30,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:00:30,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:00:30,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:00:30,168 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:00:30,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:00:30,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:00:30,171 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:00:30,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:00:30,172 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:00:30,172 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:00:30,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:00:30,173 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:00:30,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:00:30,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:00:30,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:00:30,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:00:30,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:00:30,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:00:30,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:00:30,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:00:30,179 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:00:30,179 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:00:30,180 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:00:30,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:00:30,180 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:00:30,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:00:30,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:00:30,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:00:30,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:00:30,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:00:30,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:00:30,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:00:30,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:00:30,183 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:00:30,184 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:00:30,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:00:30,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:00:30,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:00:30,185 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_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 944b52f1c750b2b149a29532cc6e317483d681a8 [2021-10-13 08:00:30,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:00:30,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:00:30,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:00:30,718 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:00:30,719 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:00:30,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-10-13 08:00:30,824 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/data/b6730c38c/f5b2f8b82ca140ca9e161e9922530c9a/FLAG56d2aa2f0 [2021-10-13 08:00:31,518 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:00:31,519 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-10-13 08:00:31,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/data/b6730c38c/f5b2f8b82ca140ca9e161e9922530c9a/FLAG56d2aa2f0 [2021-10-13 08:00:31,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/data/b6730c38c/f5b2f8b82ca140ca9e161e9922530c9a [2021-10-13 08:00:31,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:00:31,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:00:31,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:00:31,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:00:31,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:00:31,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:00:31" (1/1) ... [2021-10-13 08:00:31,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44371999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:31, skipping insertion in model container [2021-10-13 08:00:31,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:00:31" (1/1) ... [2021-10-13 08:00:31,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:00:31,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:00:32,245 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_a9eca0e1-b1be-4425-ae72-40c8b89112b5/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15172,15185] [2021-10-13 08:00:32,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:00:32,310 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 08:00:32,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:00:32,385 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_a9eca0e1-b1be-4425-ae72-40c8b89112b5/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15172,15185] [2021-10-13 08:00:32,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:00:32,407 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:00:32,492 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_a9eca0e1-b1be-4425-ae72-40c8b89112b5/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15172,15185] [2021-10-13 08:00:32,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:00:32,544 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:00:32,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32 WrapperNode [2021-10-13 08:00:32,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:00:32,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:00:32,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:00:32,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:00:32,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32" (1/1) ... [2021-10-13 08:00:32,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32" (1/1) ... [2021-10-13 08:00:32,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:00:32,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:00:32,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:00:32,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:00:32,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32" (1/1) ... [2021-10-13 08:00:32,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32" (1/1) ... [2021-10-13 08:00:32,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32" (1/1) ... [2021-10-13 08:00:32,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32" (1/1) ... [2021-10-13 08:00:32,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32" (1/1) ... [2021-10-13 08:00:32,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32" (1/1) ... [2021-10-13 08:00:32,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32" (1/1) ... [2021-10-13 08:00:32,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:00:32,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:00:32,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:00:32,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:00:32,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32" (1/1) ... [2021-10-13 08:00:32,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:00:32,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:00:32,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:00:32,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:00:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:00:32,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:00:32,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:00:32,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:00:36,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:00:36,080 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2021-10-13 08:00:36,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:00:36 BoogieIcfgContainer [2021-10-13 08:00:36,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:00:36,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:00:36,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:00:36,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:00:36,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:00:31" (1/3) ... [2021-10-13 08:00:36,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acd4e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:00:36, skipping insertion in model container [2021-10-13 08:00:36,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:32" (2/3) ... [2021-10-13 08:00:36,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acd4e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:00:36, skipping insertion in model container [2021-10-13 08:00:36,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:00:36" (3/3) ... [2021-10-13 08:00:36,093 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2021-10-13 08:00:36,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:00:36,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 08:00:36,173 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:00:36,180 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, mConcurrency=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 [2021-10-13 08:00:36,181 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 08:00:36,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 112 states have internal predecessors, (171), 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) [2021-10-13 08:00:36,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 08:00:36,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:36,211 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:00:36,212 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:36,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:36,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1221872895, now seen corresponding path program 1 times [2021-10-13 08:00:36,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:36,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813026654] [2021-10-13 08:00:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:36,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:36,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:36,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:36,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:00:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:36,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 08:00:36,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:36,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:36,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:36,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813026654] [2021-10-13 08:00:36,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813026654] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:36,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:36,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:00:36,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787183117] [2021-10-13 08:00:36,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:00:36,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:00:36,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:00:36,823 INFO L87 Difference]: Start difference. First operand has 113 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 112 states have internal predecessors, (171), 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) [2021-10-13 08:00:36,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:36,893 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2021-10-13 08:00:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:00:36,896 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 [2021-10-13 08:00:36,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:36,913 INFO L225 Difference]: With dead ends: 220 [2021-10-13 08:00:36,914 INFO L226 Difference]: Without dead ends: 109 [2021-10-13 08:00:36,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:00:36,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-13 08:00:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-10-13 08:00:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 106 states have (on average 1.5) internal successors, (159), 108 states have internal predecessors, (159), 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) [2021-10-13 08:00:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2021-10-13 08:00:37,010 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2021-10-13 08:00:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:37,011 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2021-10-13 08:00:37,011 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) [2021-10-13 08:00:37,011 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2021-10-13 08:00:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 08:00:37,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:37,015 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:00:37,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 08:00:37,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:37,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:37,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:37,235 INFO L82 PathProgramCache]: Analyzing trace with hash 175115998, now seen corresponding path program 1 times [2021-10-13 08:00:37,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:37,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447453528] [2021-10-13 08:00:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:37,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:37,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:37,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:00:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:37,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:00:37,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:37,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:37,710 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:37,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447453528] [2021-10-13 08:00:37,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447453528] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:37,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:37,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:00:37,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637372370] [2021-10-13 08:00:37,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:00:37,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:37,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:00:37,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:00:37,721 INFO L87 Difference]: Start difference. First operand 109 states and 159 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) [2021-10-13 08:00:37,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:37,756 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2021-10-13 08:00:37,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:00:37,757 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 [2021-10-13 08:00:37,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:37,761 INFO L225 Difference]: With dead ends: 109 [2021-10-13 08:00:37,761 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 08:00:37,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:00:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 08:00:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-13 08:00:37,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 46 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2021-10-13 08:00:37,786 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2021-10-13 08:00:37,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:37,787 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2021-10-13 08:00:37,788 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) [2021-10-13 08:00:37,788 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2021-10-13 08:00:37,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:00:37,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:37,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:00:37,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:38,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:38,011 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:38,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:38,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1744081540, now seen corresponding path program 1 times [2021-10-13 08:00:38,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:38,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772144539] [2021-10-13 08:00:38,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:38,014 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:38,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:38,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:38,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:00:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:38,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:00:38,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:38,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:38,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:38,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772144539] [2021-10-13 08:00:38,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772144539] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:38,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:38,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 08:00:38,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107748554] [2021-10-13 08:00:38,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:00:38,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:00:38,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:00:38,495 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:38,545 INFO L93 Difference]: Finished difference Result 152 states and 226 transitions. [2021-10-13 08:00:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:00:38,546 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 [2021-10-13 08:00:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:38,552 INFO L225 Difference]: With dead ends: 152 [2021-10-13 08:00:38,552 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 08:00:38,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:00:38,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 08:00:38,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2021-10-13 08:00:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 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) [2021-10-13 08:00:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2021-10-13 08:00:38,581 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2021-10-13 08:00:38,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:38,581 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2021-10-13 08:00:38,583 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) [2021-10-13 08:00:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2021-10-13 08:00:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:00:38,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:38,586 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:00:38,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:38,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:38,806 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:38,807 INFO L82 PathProgramCache]: Analyzing trace with hash -595366227, now seen corresponding path program 1 times [2021-10-13 08:00:38,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:38,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717839614] [2021-10-13 08:00:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:38,809 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:38,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:38,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:38,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:00:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:39,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:00:39,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:39,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:39,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:39,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717839614] [2021-10-13 08:00:39,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717839614] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:39,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:39,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:00:39,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950255426] [2021-10-13 08:00:39,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:00:39,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:39,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:00:39,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:00:39,257 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:39,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:39,337 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2021-10-13 08:00:39,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:00:39,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 08:00:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:39,339 INFO L225 Difference]: With dead ends: 147 [2021-10-13 08:00:39,339 INFO L226 Difference]: Without dead ends: 87 [2021-10-13 08:00:39,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:00:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-13 08:00:39,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-10-13 08:00:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 84 states have internal predecessors, (121), 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) [2021-10-13 08:00:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2021-10-13 08:00:39,374 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2021-10-13 08:00:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:39,375 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2021-10-13 08:00:39,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2021-10-13 08:00:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 08:00:39,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:39,378 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:00:39,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:39,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:39,593 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:39,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:39,594 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2021-10-13 08:00:39,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:39,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067224941] [2021-10-13 08:00:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:39,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:39,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:39,597 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:39,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 08:00:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:39,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:00:39,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:40,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:40,164 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:40,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067224941] [2021-10-13 08:00:40,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067224941] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:40,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:40,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 08:00:40,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216008460] [2021-10-13 08:00:40,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:00:40,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:40,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:00:40,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:00:40,167 INFO L87 Difference]: Start difference. First operand 85 states and 121 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) [2021-10-13 08:00:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:40,700 INFO L93 Difference]: Finished difference Result 608 states and 892 transitions. [2021-10-13 08:00:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 08:00:40,700 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 [2021-10-13 08:00:40,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:40,705 INFO L225 Difference]: With dead ends: 608 [2021-10-13 08:00:40,705 INFO L226 Difference]: Without dead ends: 529 [2021-10-13 08:00:40,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 210.6ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-13 08:00:40,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-10-13 08:00:40,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 212. [2021-10-13 08:00:40,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.4028436018957346) internal successors, (296), 211 states have internal predecessors, (296), 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) [2021-10-13 08:00:40,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 296 transitions. [2021-10-13 08:00:40,764 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 296 transitions. Word has length 25 [2021-10-13 08:00:40,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:40,765 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 296 transitions. [2021-10-13 08:00:40,765 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) [2021-10-13 08:00:40,766 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 296 transitions. [2021-10-13 08:00:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 08:00:40,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:40,769 INFO L512 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] [2021-10-13 08:00:40,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:40,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:40,982 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:40,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:40,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1054930310, now seen corresponding path program 1 times [2021-10-13 08:00:40,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:40,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807882959] [2021-10-13 08:00:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:40,984 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:40,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:40,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:41,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 08:00:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:41,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:00:41,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:41,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:41,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:41,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807882959] [2021-10-13 08:00:41,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807882959] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:00:41,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [113027127] [2021-10-13 08:00:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:41,698 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:00:41,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:00:41,703 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:00:41,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 08:00:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:42,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:00:42,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 08:00:42,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 08:00:42,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [113027127] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:42,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 08:00:42,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2021-10-13 08:00:42,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511585980] [2021-10-13 08:00:42,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:00:42,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:42,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:00:42,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:00:42,380 INFO L87 Difference]: Start difference. First operand 212 states and 296 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) [2021-10-13 08:00:42,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:42,642 INFO L93 Difference]: Finished difference Result 498 states and 707 transitions. [2021-10-13 08:00:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:00:42,643 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 [2021-10-13 08:00:42,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:42,647 INFO L225 Difference]: With dead ends: 498 [2021-10-13 08:00:42,648 INFO L226 Difference]: Without dead ends: 496 [2021-10-13 08:00:42,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 08:00:42,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-13 08:00:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 212. [2021-10-13 08:00:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.3933649289099526) internal successors, (294), 211 states have internal predecessors, (294), 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) [2021-10-13 08:00:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 294 transitions. [2021-10-13 08:00:42,680 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 294 transitions. Word has length 40 [2021-10-13 08:00:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:42,680 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 294 transitions. [2021-10-13 08:00:42,681 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) [2021-10-13 08:00:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 294 transitions. [2021-10-13 08:00:42,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-13 08:00:42,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:42,684 INFO L512 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, 1] [2021-10-13 08:00:42,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:42,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-13 08:00:43,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:43,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:43,093 INFO L82 PathProgramCache]: Analyzing trace with hash -411211596, now seen corresponding path program 1 times [2021-10-13 08:00:43,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:43,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742092860] [2021-10-13 08:00:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:43,094 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:43,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:43,095 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:43,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 08:00:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:43,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:00:43,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:43,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:43,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:43,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742092860] [2021-10-13 08:00:43,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742092860] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:00:43,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [420735235] [2021-10-13 08:00:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:43,854 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:00:43,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:00:43,859 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:00:43,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-13 08:00:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:44,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:00:44,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:44,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:44,605 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:44,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [420735235] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:44,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 08:00:44,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3, 3] total 7 [2021-10-13 08:00:44,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026845744] [2021-10-13 08:00:44,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:00:44,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:44,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:00:44,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:00:44,608 INFO L87 Difference]: Start difference. First operand 212 states and 294 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) [2021-10-13 08:00:46,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:46,447 INFO L93 Difference]: Finished difference Result 424 states and 588 transitions. [2021-10-13 08:00:46,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:00:46,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 48 [2021-10-13 08:00:46,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:46,450 INFO L225 Difference]: With dead ends: 424 [2021-10-13 08:00:46,450 INFO L226 Difference]: Without dead ends: 154 [2021-10-13 08:00:46,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:00:46,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-13 08:00:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-13 08:00:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 153 states have internal predecessors, (207), 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) [2021-10-13 08:00:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2021-10-13 08:00:46,471 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 48 [2021-10-13 08:00:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:46,472 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2021-10-13 08:00:46,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) [2021-10-13 08:00:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2021-10-13 08:00:46,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-13 08:00:46,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:46,474 INFO L512 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, 1, 1] [2021-10-13 08:00:46,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:46,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:46,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:46,877 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:46,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1761073962, now seen corresponding path program 1 times [2021-10-13 08:00:46,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:46,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673647625] [2021-10-13 08:00:46,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:46,878 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:46,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:46,880 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:46,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 08:00:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:47,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:00:47,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:00:47,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:00:47,503 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:47,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673647625] [2021-10-13 08:00:47,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673647625] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:47,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:47,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 08:00:47,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554179089] [2021-10-13 08:00:47,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:00:47,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:47,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:00:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:00:47,506 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2021-10-13 08:00:47,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:47,630 INFO L93 Difference]: Finished difference Result 421 states and 560 transitions. [2021-10-13 08:00:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:00:47,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 49 [2021-10-13 08:00:47,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:47,633 INFO L225 Difference]: With dead ends: 421 [2021-10-13 08:00:47,634 INFO L226 Difference]: Without dead ends: 273 [2021-10-13 08:00:47,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:00:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-13 08:00:47,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 169. [2021-10-13 08:00:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.3214285714285714) internal successors, (222), 168 states have internal predecessors, (222), 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) [2021-10-13 08:00:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 222 transitions. [2021-10-13 08:00:47,663 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 222 transitions. Word has length 49 [2021-10-13 08:00:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:47,666 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 222 transitions. [2021-10-13 08:00:47,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2021-10-13 08:00:47,666 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 222 transitions. [2021-10-13 08:00:47,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-13 08:00:47,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:47,669 INFO L512 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, 1, 1] [2021-10-13 08:00:47,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:47,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:47,888 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:47,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:47,889 INFO L82 PathProgramCache]: Analyzing trace with hash -374870568, now seen corresponding path program 1 times [2021-10-13 08:00:47,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:47,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664268514] [2021-10-13 08:00:47,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:47,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:47,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:47,892 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:47,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 08:00:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:48,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:00:48,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:00:48,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:00:48,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:48,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664268514] [2021-10-13 08:00:48,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664268514] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:48,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:48,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 08:00:48,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68884746] [2021-10-13 08:00:48,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:00:48,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:48,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:00:48,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:00:48,554 INFO L87 Difference]: Start difference. First operand 169 states and 222 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2021-10-13 08:00:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:48,632 INFO L93 Difference]: Finished difference Result 397 states and 519 transitions. [2021-10-13 08:00:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:00:48,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 49 [2021-10-13 08:00:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:48,635 INFO L225 Difference]: With dead ends: 397 [2021-10-13 08:00:48,635 INFO L226 Difference]: Without dead ends: 234 [2021-10-13 08:00:48,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:00:48,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-13 08:00:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 148. [2021-10-13 08:00:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.2925170068027212) internal successors, (190), 147 states have internal predecessors, (190), 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) [2021-10-13 08:00:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 190 transitions. [2021-10-13 08:00:48,660 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 190 transitions. Word has length 49 [2021-10-13 08:00:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:48,660 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 190 transitions. [2021-10-13 08:00:48,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2021-10-13 08:00:48,661 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 190 transitions. [2021-10-13 08:00:48,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 08:00:48,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:48,662 INFO L512 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, 1, 1] [2021-10-13 08:00:48,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:48,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:48,878 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:48,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:48,879 INFO L82 PathProgramCache]: Analyzing trace with hash -2038322788, now seen corresponding path program 1 times [2021-10-13 08:00:48,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:48,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928467699] [2021-10-13 08:00:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:48,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:48,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:48,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:48,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 08:00:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:49,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:00:49,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 08:00:49,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 08:00:49,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:49,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928467699] [2021-10-13 08:00:49,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928467699] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:00:49,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [231683324] [2021-10-13 08:00:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:49,840 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:00:49,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:00:49,842 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:00:49,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-13 08:00:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:50,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:00:50,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 08:00:50,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 08:00:50,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [231683324] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:00:50,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580694349] [2021-10-13 08:00:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:50,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:00:50,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:00:50,812 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:00:50,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 08:00:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:51,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:00:51,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 08:00:51,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 08:00:51,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580694349] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:00:51,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:00:51,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-13 08:00:51,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173596010] [2021-10-13 08:00:51,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 08:00:51,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:51,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 08:00:51,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:00:51,701 INFO L87 Difference]: Start difference. First operand 148 states and 190 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 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) [2021-10-13 08:00:54,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:54,289 INFO L93 Difference]: Finished difference Result 959 states and 1265 transitions. [2021-10-13 08:00:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 08:00:54,290 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 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 50 [2021-10-13 08:00:54,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:54,297 INFO L225 Difference]: With dead ends: 959 [2021-10-13 08:00:54,297 INFO L226 Difference]: Without dead ends: 841 [2021-10-13 08:00:54,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 390.0ms TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-10-13 08:00:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-10-13 08:00:54,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 264. [2021-10-13 08:00:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.3155893536121672) internal successors, (346), 263 states have internal predecessors, (346), 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) [2021-10-13 08:00:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 346 transitions. [2021-10-13 08:00:54,342 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 346 transitions. Word has length 50 [2021-10-13 08:00:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:54,343 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 346 transitions. [2021-10-13 08:00:54,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 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) [2021-10-13 08:00:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 346 transitions. [2021-10-13 08:00:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 08:00:54,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:54,345 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 08:00:54,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:54,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:54,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:54,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:00:54,949 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:54,949 INFO L82 PathProgramCache]: Analyzing trace with hash 564554040, now seen corresponding path program 2 times [2021-10-13 08:00:54,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:54,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425898744] [2021-10-13 08:00:54,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:00:54,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:54,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:54,951 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:54,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 08:00:56,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:00:56,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-13 08:00:56,737 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 08:00:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:00:58,237 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 08:00:58,238 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 08:00:58,239 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:00:58,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:00:58,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:00:58,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-13 08:00:58,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:58,461 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:00:58,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:00:58 BoogieIcfgContainer [2021-10-13 08:00:58,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:00:58,640 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:00:58,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:00:58,640 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:00:58,641 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:00:36" (3/4) ... [2021-10-13 08:00:58,643 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 08:00:58,781 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:00:58,784 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:00:58,789 INFO L168 Benchmark]: Toolchain (without parser) took 27020.97 ms. Allocated memory was 60.8 MB in the beginning and 132.1 MB in the end (delta: 71.3 MB). Free memory was 40.2 MB in the beginning and 44.0 MB in the end (delta: -3.8 MB). Peak memory consumption was 67.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:58,789 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 60.8 MB. Free memory is still 42.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:00:58,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 779.68 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 29.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:58,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.82 ms. Allocated memory is still 60.8 MB. Free memory was 29.5 MB in the beginning and 25.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:58,791 INFO L168 Benchmark]: Boogie Preprocessor took 103.74 ms. Allocated memory was 60.8 MB in the beginning and 90.2 MB in the end (delta: 29.4 MB). Free memory was 25.9 MB in the beginning and 71.6 MB in the end (delta: -45.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:58,792 INFO L168 Benchmark]: RCFGBuilder took 3333.70 ms. Allocated memory is still 90.2 MB. Free memory was 71.6 MB in the beginning and 43.1 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:58,792 INFO L168 Benchmark]: TraceAbstraction took 22554.31 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 42.6 MB in the beginning and 71.3 MB in the end (delta: -28.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:58,793 INFO L168 Benchmark]: Witness Printer took 144.26 ms. Allocated memory is still 132.1 MB. Free memory was 71.3 MB in the beginning and 44.0 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:58,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 60.8 MB. Free memory is still 42.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 779.68 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 29.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.82 ms. Allocated memory is still 60.8 MB. Free memory was 29.5 MB in the beginning and 25.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.74 ms. Allocated memory was 60.8 MB in the beginning and 90.2 MB in the end (delta: 29.4 MB). Free memory was 25.9 MB in the beginning and 71.6 MB in the end (delta: -45.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3333.70 ms. Allocated memory is still 90.2 MB. Free memory was 71.6 MB in the beginning and 43.1 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22554.31 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 42.6 MB in the beginning and 71.3 MB in the end (delta: -28.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 144.26 ms. Allocated memory is still 132.1 MB. Free memory was 71.3 MB in the beginning and 44.0 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 724]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int pumpRunning = 0; [L527] int systemActive = 1; [L730] int waterLevel = 1; [L731] int methaneLevelCritical = 0; [L824] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L897] int retValue_acc ; [L898] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L452] int splverifierCounter ; [L453] int tmp ; [L454] int tmp___0 ; [L455] int tmp___1 ; [L456] int tmp___2 ; [L459] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L748] COND TRUE waterLevel < 2 [L749] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L534] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L592] COND FALSE !(\read(pumpRunning)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L566] COND TRUE ! pumpRunning [L686] int retValue_acc ; [L687] int tmp ; [L688] int tmp___0 ; [L810] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L813] COND FALSE !(waterLevel < 2) [L817] retValue_acc = 0 [L818] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L692] tmp = isHighWaterSensorDry() [L694] COND FALSE !(\read(tmp)) [L697] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L699] retValue_acc = tmp___0 [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L568] tmp = isHighWaterLevel() [L570] COND TRUE \read(tmp) [L617] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] 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] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] 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] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] 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 [L641] int retValue_acc ; [L644] retValue_acc = pumpRunning [L645] 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] [L724] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 724]: 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: 724]: 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, 113 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 22288.8ms, OverallIterations: 11, TraceHistogramMax: 3, EmptinessCheckTime: 36.0ms, AutomataDifference: 5789.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1025 SDtfs, 2057 SDslu, 2339 SDs, 0 SdLazy, 454 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4280.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1067 GetRequests, 996 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 851.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=10, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 354.0ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1415 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 414.3ms SsaConstructionTime, 3198.7ms SatisfiabilityAnalysisTime, 4667.9ms InterpolantComputationTime, 597 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1028 ConstructedInterpolants, 0 QuantifiedInterpolants, 2330 SizeOfPredicates, 21 NumberOfNonLiveVariables, 3044 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 28 InterpolantComputations, 18 PerfectInterpolantSequences, 178/252 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! [2021-10-13 08:00:58,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9eca0e1-b1be-4425-ae72-40c8b89112b5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...