./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan --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 10c62355b958c28dceaa55313714ee80b90c1fad ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan --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 10c62355b958c28dceaa55313714ee80b90c1fad ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-22 12:57:12,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:12,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:12,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:12,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:12,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:12,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:12,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:12,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:12,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:12,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:12,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:12,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:12,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:12,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:12,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:12,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:12,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:12,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:12,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:12,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:12,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:12,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:12,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:12,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:12,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:12,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:12,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:12,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:12,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:12,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:12,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:12,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:12,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:12,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:12,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:12,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:12,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:12,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:12,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:12,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:12,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:12,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:12,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:12,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:12,450 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:12,450 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:12,451 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:12,451 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:12,451 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:12,451 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:12,452 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:12,453 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:12,453 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:12,454 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:12,454 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:12,454 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:12,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:12,455 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:12,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:12,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:12,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:12,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:12,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:12,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:12,457 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:12,457 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:12,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:12,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:12,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:12,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:12,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:12,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:12,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:12,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:12,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:12,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:12,462 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:12,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:12,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:12,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:12,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:12,463 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10c62355b958c28dceaa55313714ee80b90c1fad [2020-11-22 12:57:12,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:12,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:12,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:12,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:12,754 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:12,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-11-22 12:57:12,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/data/3177aa74d/1097e975465a42c28ddf171f375e6c1e/FLAGf39a6bdd7 [2020-11-22 12:57:13,325 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:13,326 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-11-22 12:57:13,341 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/data/3177aa74d/1097e975465a42c28ddf171f375e6c1e/FLAGf39a6bdd7 [2020-11-22 12:57:13,652 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/data/3177aa74d/1097e975465a42c28ddf171f375e6c1e [2020-11-22 12:57:13,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:13,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:13,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:13,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:13,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:13,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:13" (1/1) ... [2020-11-22 12:57:13,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@80b3608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:13, skipping insertion in model container [2020-11-22 12:57:13,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:13" (1/1) ... [2020-11-22 12:57:13,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:13,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:14,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:14,142 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) [2020-11-22 12:57:14,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5bd8b647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14, skipping insertion in model container [2020-11-22 12:57:14,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:14,144 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 12:57:14,147 INFO L168 Benchmark]: Toolchain (without parser) took 489.13 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 67.4 MB in the beginning and 93.4 MB in the end (delta: -26.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:14,149 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:14,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.46 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 67.1 MB in the beginning and 93.4 MB in the end (delta: -26.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:14,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 486.46 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 67.1 MB in the beginning and 93.4 MB in the end (delta: -26.3 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: 558]: 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 0.2.0-a4ecdab [2020-11-22 12:57:16,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:16,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:16,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:16,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:16,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:16,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:16,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:16,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:16,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:16,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:16,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:16,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:16,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:16,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:16,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:16,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:16,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:16,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:16,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:16,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:16,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:16,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:16,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:16,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:16,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:16,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:16,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:16,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:16,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:16,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:16,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:16,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:16,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:16,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:16,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:16,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:16,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:16,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:16,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:16,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:16,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:57:16,453 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:16,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:16,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:16,455 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:16,455 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:16,455 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:16,456 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:16,456 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:16,456 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:16,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:16,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:16,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:16,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:16,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:16,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:16,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:16,460 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:16,460 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:57:16,460 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:57:16,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:16,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:16,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:16,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:16,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:16,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:57:16,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:16,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:16,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:16,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:16,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:16,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:16,462 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:57:16,463 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:57:16,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:16,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:16,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:16,464 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10c62355b958c28dceaa55313714ee80b90c1fad [2020-11-22 12:57:16,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:16,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:16,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:16,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:16,904 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:16,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-11-22 12:57:16,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/data/86cc06765/69cea4833ee7422a92bfb59ed9307ff5/FLAG412b096cc [2020-11-22 12:57:17,451 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:17,451 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-11-22 12:57:17,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/data/86cc06765/69cea4833ee7422a92bfb59ed9307ff5/FLAG412b096cc [2020-11-22 12:57:17,783 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/data/86cc06765/69cea4833ee7422a92bfb59ed9307ff5 [2020-11-22 12:57:17,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:17,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:17,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:17,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:17,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:17,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:17" (1/1) ... [2020-11-22 12:57:17,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335b28a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:17, skipping insertion in model container [2020-11-22 12:57:17,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:17" (1/1) ... [2020-11-22 12:57:17,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:17,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:18,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:18,302 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 12:57:18,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:18,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:18,391 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:18,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:18,539 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:18,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18 WrapperNode [2020-11-22 12:57:18,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:18,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:18,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:18,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:18,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18" (1/1) ... [2020-11-22 12:57:18,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18" (1/1) ... [2020-11-22 12:57:18,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:18,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:18,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:18,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:18,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18" (1/1) ... [2020-11-22 12:57:18,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18" (1/1) ... [2020-11-22 12:57:18,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18" (1/1) ... [2020-11-22 12:57:18,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18" (1/1) ... [2020-11-22 12:57:18,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18" (1/1) ... [2020-11-22 12:57:18,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18" (1/1) ... [2020-11-22 12:57:18,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18" (1/1) ... [2020-11-22 12:57:18,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:18,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:18,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:18,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:18,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:57:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:21,449 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:21,451 INFO L298 CfgBuilder]: Removed 168 assume(true) statements. [2020-11-22 12:57:21,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:21 BoogieIcfgContainer [2020-11-22 12:57:21,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:21,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:21,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:21,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:21,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:17" (1/3) ... [2020-11-22 12:57:21,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e5e3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:21, skipping insertion in model container [2020-11-22 12:57:21,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:18" (2/3) ... [2020-11-22 12:57:21,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e5e3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:21, skipping insertion in model container [2020-11-22 12:57:21,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:21" (3/3) ... [2020-11-22 12:57:21,463 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-11-22 12:57:21,475 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:21,480 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 12:57:21,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 12:57:21,528 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:21,528 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:21,529 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:21,529 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:21,529 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:21,529 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:21,531 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:21,532 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:21,548 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-11-22 12:57:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:57:21,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:21,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:21,555 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:21,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:21,561 INFO L82 PathProgramCache]: Analyzing trace with hash -515765374, now seen corresponding path program 1 times [2020-11-22 12:57:21,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:21,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570967886] [2020-11-22 12:57:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:21,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:57:21,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:21,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:21,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570967886] [2020-11-22 12:57:21,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:21,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:57:21,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321763826] [2020-11-22 12:57:21,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:57:21,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:21,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:57:21,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:57:21,855 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-11-22 12:57:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:21,887 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2020-11-22 12:57:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:57:21,888 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-22 12:57:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:21,899 INFO L225 Difference]: With dead ends: 223 [2020-11-22 12:57:21,899 INFO L226 Difference]: Without dead ends: 109 [2020-11-22 12:57:21,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:57:21,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-22 12:57:21,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-22 12:57:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-22 12:57:21,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-11-22 12:57:21,946 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-11-22 12:57:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:21,947 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-11-22 12:57:21,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:57:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-11-22 12:57:21,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:57:21,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:21,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:22,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:57:22,165 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:22,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1562522271, now seen corresponding path program 1 times [2020-11-22 12:57:22,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:22,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089650871] [2020-11-22 12:57:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:22,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:22,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:22,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:22,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089650871] [2020-11-22 12:57:22,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:22,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:57:22,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899763939] [2020-11-22 12:57:22,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:22,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:22,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:22,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:22,423 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 4 states. [2020-11-22 12:57:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:22,440 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-11-22 12:57:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:22,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:57:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:22,441 INFO L225 Difference]: With dead ends: 109 [2020-11-22 12:57:22,442 INFO L226 Difference]: Without dead ends: 47 [2020-11-22 12:57:22,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:22,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-22 12:57:22,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-22 12:57:22,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-22 12:57:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-11-22 12:57:22,449 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-11-22 12:57:22,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:22,449 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-11-22 12:57:22,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-11-22 12:57:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 12:57:22,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:22,451 INFO L422 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] [2020-11-22 12:57:22,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:57:22,667 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:22,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:22,667 INFO L82 PathProgramCache]: Analyzing trace with hash 109011716, now seen corresponding path program 1 times [2020-11-22 12:57:22,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:22,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718691633] [2020-11-22 12:57:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:22,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:22,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:22,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:22,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718691633] [2020-11-22 12:57:22,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:22,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:57:22,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868275429] [2020-11-22 12:57:22,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:22,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:22,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:22,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:22,873 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 4 states. [2020-11-22 12:57:22,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:22,937 INFO L93 Difference]: Finished difference Result 152 states and 226 transitions. [2020-11-22 12:57:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:22,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-22 12:57:22,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:22,939 INFO L225 Difference]: With dead ends: 152 [2020-11-22 12:57:22,940 INFO L226 Difference]: Without dead ends: 111 [2020-11-22 12:57:22,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:22,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-22 12:57:22,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2020-11-22 12:57:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-22 12:57:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2020-11-22 12:57:22,965 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2020-11-22 12:57:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:22,965 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2020-11-22 12:57:22,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:22,965 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2020-11-22 12:57:22,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 12:57:22,967 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:22,968 INFO L422 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] [2020-11-22 12:57:23,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:57:23,181 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:23,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:23,181 INFO L82 PathProgramCache]: Analyzing trace with hash 60563277, now seen corresponding path program 1 times [2020-11-22 12:57:23,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:23,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274420776] [2020-11-22 12:57:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:23,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:23,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:23,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:23,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274420776] [2020-11-22 12:57:23,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:23,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:57:23,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157845016] [2020-11-22 12:57:23,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:23,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:23,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:23,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:23,370 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2020-11-22 12:57:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:23,447 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2020-11-22 12:57:23,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:23,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-22 12:57:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:23,448 INFO L225 Difference]: With dead ends: 147 [2020-11-22 12:57:23,448 INFO L226 Difference]: Without dead ends: 87 [2020-11-22 12:57:23,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:23,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-22 12:57:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-11-22 12:57:23,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-22 12:57:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-11-22 12:57:23,461 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2020-11-22 12:57:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:23,461 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-11-22 12:57:23,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-11-22 12:57:23,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 12:57:23,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:23,463 INFO L422 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] [2020-11-22 12:57:23,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:57:23,680 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:23,681 INFO L82 PathProgramCache]: Analyzing trace with hash -445763815, now seen corresponding path program 1 times [2020-11-22 12:57:23,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:23,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863434453] [2020-11-22 12:57:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:23,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:57:23,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:23,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:23,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863434453] [2020-11-22 12:57:23,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:23,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-22 12:57:23,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597560679] [2020-11-22 12:57:23,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 12:57:23,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:23,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 12:57:23,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:57:23,974 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 8 states. [2020-11-22 12:57:24,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:24,394 INFO L93 Difference]: Finished difference Result 608 states and 892 transitions. [2020-11-22 12:57:24,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-22 12:57:24,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-11-22 12:57:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:24,399 INFO L225 Difference]: With dead ends: 608 [2020-11-22 12:57:24,399 INFO L226 Difference]: Without dead ends: 529 [2020-11-22 12:57:24,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-11-22 12:57:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-11-22 12:57:24,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 212. [2020-11-22 12:57:24,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-22 12:57:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 296 transitions. [2020-11-22 12:57:24,478 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 296 transitions. Word has length 25 [2020-11-22 12:57:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:24,479 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 296 transitions. [2020-11-22 12:57:24,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 12:57:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 296 transitions. [2020-11-22 12:57:24,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-22 12:57:24,487 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:24,488 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-11-22 12:57:24,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 12:57:24,704 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:24,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1317475601, now seen corresponding path program 1 times [2020-11-22 12:57:24,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:24,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718608962] [2020-11-22 12:57:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:24,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:57:24,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:24,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:25,010 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:25,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718608962] [2020-11-22 12:57:25,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [801900795] [2020-11-22 12:57:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:57:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:25,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:57:25,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:57:25,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:57:25,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:57:25,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2020-11-22 12:57:25,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923351031] [2020-11-22 12:57:25,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:25,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:25,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:25,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:57:25,290 INFO L87 Difference]: Start difference. First operand 212 states and 296 transitions. Second operand 5 states. [2020-11-22 12:57:25,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:25,548 INFO L93 Difference]: Finished difference Result 498 states and 707 transitions. [2020-11-22 12:57:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 12:57:25,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-11-22 12:57:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:25,552 INFO L225 Difference]: With dead ends: 498 [2020-11-22 12:57:25,552 INFO L226 Difference]: Without dead ends: 496 [2020-11-22 12:57:25,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:57:25,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-11-22 12:57:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 212. [2020-11-22 12:57:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-22 12:57:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 294 transitions. [2020-11-22 12:57:25,592 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 294 transitions. Word has length 41 [2020-11-22 12:57:25,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:25,594 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 294 transitions. [2020-11-22 12:57:25,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 294 transitions. [2020-11-22 12:57:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-22 12:57:25,597 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:25,598 INFO L422 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] [2020-11-22 12:57:26,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:57:26,020 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:26,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:26,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1756738449, now seen corresponding path program 1 times [2020-11-22 12:57:26,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:26,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732431658] [2020-11-22 12:57:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:26,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:57:26,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:26,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:26,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732431658] [2020-11-22 12:57:26,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [311200613] [2020-11-22 12:57:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:57:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:26,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:57:26,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:57:26,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:57:26,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:57:26,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2020-11-22 12:57:26,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460456006] [2020-11-22 12:57:26,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:26,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:26,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:26,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:57:26,560 INFO L87 Difference]: Start difference. First operand 212 states and 294 transitions. Second operand 5 states. [2020-11-22 12:57:26,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:26,720 INFO L93 Difference]: Finished difference Result 647 states and 890 transitions. [2020-11-22 12:57:26,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:26,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-11-22 12:57:26,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:26,723 INFO L225 Difference]: With dead ends: 647 [2020-11-22 12:57:26,724 INFO L226 Difference]: Without dead ends: 441 [2020-11-22 12:57:26,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-22 12:57:26,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-11-22 12:57:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 227. [2020-11-22 12:57:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-22 12:57:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 309 transitions. [2020-11-22 12:57:26,768 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 309 transitions. Word has length 48 [2020-11-22 12:57:26,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:26,768 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 309 transitions. [2020-11-22 12:57:26,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 309 transitions. [2020-11-22 12:57:26,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-22 12:57:26,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:26,770 INFO L422 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] [2020-11-22 12:57:27,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:57:27,183 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:27,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1363711439, now seen corresponding path program 1 times [2020-11-22 12:57:27,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:27,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869479307] [2020-11-22 12:57:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:27,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:57:27,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:27,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:27,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869479307] [2020-11-22 12:57:27,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2033144373] [2020-11-22 12:57:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:57:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:27,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 12:57:27,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:57:27,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:57:27,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:57:27,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [3, 3] total 11 [2020-11-22 12:57:27,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138380974] [2020-11-22 12:57:27,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:57:27,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:27,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:57:27,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-22 12:57:27,815 INFO L87 Difference]: Start difference. First operand 227 states and 309 transitions. Second operand 7 states. [2020-11-22 12:57:28,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:28,007 INFO L93 Difference]: Finished difference Result 604 states and 821 transitions. [2020-11-22 12:57:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:28,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-11-22 12:57:28,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:28,010 INFO L225 Difference]: With dead ends: 604 [2020-11-22 12:57:28,010 INFO L226 Difference]: Without dead ends: 383 [2020-11-22 12:57:28,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-11-22 12:57:28,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-11-22 12:57:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 205. [2020-11-22 12:57:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-11-22 12:57:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 274 transitions. [2020-11-22 12:57:28,051 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 274 transitions. Word has length 48 [2020-11-22 12:57:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:28,053 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 274 transitions. [2020-11-22 12:57:28,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:57:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 274 transitions. [2020-11-22 12:57:28,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-22 12:57:28,055 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:28,056 INFO L422 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] [2020-11-22 12:57:28,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,11 mathsat -unsat_core_generation=3 [2020-11-22 12:57:28,459 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:28,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:28,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1908839041, now seen corresponding path program 1 times [2020-11-22 12:57:28,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:28,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539777533] [2020-11-22 12:57:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:28,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 12:57:28,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 12:57:28,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 12:57:28,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539777533] [2020-11-22 12:57:28,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1516807829] [2020-11-22 12:57:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:57:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:29,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 12:57:29,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 12:57:29,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 12:57:29,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804928887] [2020-11-22 12:57:29,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:29,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 12:57:29,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 12:57:29,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:29,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 12:57:29,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-22 12:57:29,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5, 5] total 10 [2020-11-22 12:57:29,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152178437] [2020-11-22 12:57:29,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-22 12:57:29,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:29,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-22 12:57:29,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-22 12:57:29,296 INFO L87 Difference]: Start difference. First operand 205 states and 274 transitions. Second operand 11 states. [2020-11-22 12:57:30,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:30,678 INFO L93 Difference]: Finished difference Result 1277 states and 1754 transitions. [2020-11-22 12:57:30,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-22 12:57:30,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-11-22 12:57:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:30,685 INFO L225 Difference]: With dead ends: 1277 [2020-11-22 12:57:30,686 INFO L226 Difference]: Without dead ends: 1120 [2020-11-22 12:57:30,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 282 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2020-11-22 12:57:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2020-11-22 12:57:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 341. [2020-11-22 12:57:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-11-22 12:57:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 463 transitions. [2020-11-22 12:57:30,776 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 463 transitions. Word has length 50 [2020-11-22 12:57:30,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:30,776 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 463 transitions. [2020-11-22 12:57:30,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-22 12:57:30,777 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 463 transitions. [2020-11-22 12:57:30,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-22 12:57:30,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:30,779 INFO L422 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] [2020-11-22 12:57:31,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:31,400 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:31,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1359831384, now seen corresponding path program 2 times [2020-11-22 12:57:31,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:31,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608154911] [2020-11-22 12:57:31,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:32,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-22 12:57:32,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-22 12:57:32,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:33,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:34,161 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:57:34,161 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:57:34,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-22 12:57:34,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:34 BoogieIcfgContainer [2020-11-22 12:57:34,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:34,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:34,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:34,583 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:34,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:21" (3/4) ... [2020-11-22 12:57:34,585 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:57:34,751 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_112e2d72-9666-4aea-82f4-30f379500b93/bin/utaipan/witness.graphml [2020-11-22 12:57:34,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:34,753 INFO L168 Benchmark]: Toolchain (without parser) took 16965.69 ms. Allocated memory was 79.7 MB in the beginning and 144.7 MB in the end (delta: 65.0 MB). Free memory was 44.3 MB in the beginning and 88.7 MB in the end (delta: -44.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:34,754 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory was 61.5 MB in the beginning and 61.4 MB in the end (delta: 126.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:34,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 751.59 ms. Allocated memory is still 79.7 MB. Free memory was 44.0 MB in the beginning and 44.7 MB in the end (delta: -667.7 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:34,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.15 ms. Allocated memory is still 79.7 MB. Free memory was 44.7 MB in the beginning and 41.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:34,756 INFO L168 Benchmark]: Boogie Preprocessor took 75.51 ms. Allocated memory is still 79.7 MB. Free memory was 41.2 MB in the beginning and 38.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:34,756 INFO L168 Benchmark]: RCFGBuilder took 2725.39 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 38.4 MB in the beginning and 53.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:34,757 INFO L168 Benchmark]: TraceAbstraction took 13126.03 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 52.5 MB in the beginning and 116.0 MB in the end (delta: -63.5 MB). Peak memory consumption was 61.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:34,757 INFO L168 Benchmark]: Witness Printer took 168.80 ms. Allocated memory is still 144.7 MB. Free memory was 116.0 MB in the beginning and 88.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:34,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory was 61.5 MB in the beginning and 61.4 MB in the end (delta: 126.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 751.59 ms. Allocated memory is still 79.7 MB. Free memory was 44.0 MB in the beginning and 44.7 MB in the end (delta: -667.7 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 111.15 ms. Allocated memory is still 79.7 MB. Free memory was 44.7 MB in the beginning and 41.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.51 ms. Allocated memory is still 79.7 MB. Free memory was 41.2 MB in the beginning and 38.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2725.39 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 38.4 MB in the beginning and 53.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13126.03 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 52.5 MB in the beginning and 116.0 MB in the end (delta: -63.5 MB). Peak memory consumption was 61.9 MB. Max. memory is 16.1 GB. * Witness Printer took 168.80 ms. Allocated memory is still 144.7 MB. Free memory was 116.0 MB in the beginning and 88.7 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: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L125] int pumpRunning = 0; [L126] int systemActive = 1; [L336] int cleanupTimeShifts = 4; [L436] int waterLevel = 1; [L437] int methaneLevelCritical = 0; [L699] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L412] int retValue_acc ; [L413] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L948] int retValue_acc ; [L951] retValue_acc = 1 [L952] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L419] tmp = valid_product() [L421] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L49] int splverifierCounter ; [L50] int tmp ; [L51] int tmp___0 ; [L52] int tmp___1 ; [L53] int tmp___2 ; [L56] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L454] COND TRUE waterLevel < 2 [L455] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L133] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] COND FALSE !(\read(pumpRunning)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND TRUE ! pumpRunning [L285] int retValue_acc ; [L286] int tmp ; [L287] int tmp___0 ; [L516] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L519] COND FALSE !(waterLevel < 2) [L523] retValue_acc = 0 [L524] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L291] tmp = isHighWaterSensorDry() [L293] COND FALSE !(\read(tmp)) [L296] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L298] retValue_acc = tmp___0 [L299] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] tmp = isHighWaterLevel() [L169] COND TRUE \read(tmp) [L216] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L902] tmp = getWaterLevel() [L904] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L442] COND TRUE waterLevel > 0 [L443] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L191] COND TRUE \read(pumpRunning) [L229] int retValue_acc ; [L475] int retValue_acc ; [L478] retValue_acc = methaneLevelCritical [L479] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L233] retValue_acc = isMethaneLevelCritical() [L235] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] tmp = isMethaneAlarm() [L195] COND FALSE !(\read(tmp)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L902] tmp = getWaterLevel() [L904] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L442] COND TRUE waterLevel > 0 [L443] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L191] COND TRUE \read(pumpRunning) [L229] int retValue_acc ; [L475] int retValue_acc ; [L478] retValue_acc = methaneLevelCritical [L479] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L233] retValue_acc = isMethaneLevelCritical() [L235] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L193] tmp = isMethaneAlarm() [L195] COND FALSE !(\read(tmp)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L902] tmp = getWaterLevel() [L904] COND TRUE tmp == 0 [L240] int retValue_acc ; [L243] retValue_acc = pumpRunning [L244] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L906] tmp___0 = isPumpRunning() [L908] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product40.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 116 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.8s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 988 SDtfs, 2483 SDslu, 2422 SDs, 0 SdLazy, 446 SolverSat, 113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1071 GetRequests, 989 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 1819 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 597 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1028 ConstructedInterpolants, 1 QuantifiedInterpolants, 130523 SizeOfPredicates, 30 NumberOfNonLiveVariables, 3056 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 28 InterpolantComputations, 16 PerfectInterpolantSequences, 172/256 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! Received shutdown request...