./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ed98ebb1999cc1f1ce8b0aa16a3cd7cdfeeb781 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ed98ebb1999cc1f1ce8b0aa16a3cd7cdfeeb781 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:40:47,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:40:47,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:40:47,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:40:47,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:40:47,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:40:47,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:40:47,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:40:47,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:40:47,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:40:47,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:40:47,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:40:47,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:40:47,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:40:47,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:40:47,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:40:47,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:40:47,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:40:47,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:40:47,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:40:47,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:40:47,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:40:47,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:40:47,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:40:47,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:40:47,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:40:47,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:40:47,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:40:47,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:40:47,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:40:47,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:40:47,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:40:47,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:40:47,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:40:47,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:40:47,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:40:47,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:40:47,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:40:47,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:40:47,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:40:47,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:40:47,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:40:47,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:40:47,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:40:47,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:40:47,446 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:40:47,447 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:40:47,447 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:40:47,447 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:40:47,447 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:40:47,454 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:40:47,454 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:40:47,455 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:40:47,455 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:40:47,456 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:40:47,456 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:40:47,456 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:40:47,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:40:47,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:40:47,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:40:47,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:40:47,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:40:47,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:40:47,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:40:47,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:40:47,459 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:40:47,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:40:47,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:40:47,460 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:40:47,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:40:47,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:40:47,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:40:47,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:47,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:40:47,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:40:47,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:40:47,462 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:40:47,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:40:47,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:40:47,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:40:47,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:40:47,463 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_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed98ebb1999cc1f1ce8b0aa16a3cd7cdfeeb781 [2021-10-13 07:40:47,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:40:47,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:40:47,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:40:47,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:40:47,765 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:40:47,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2021-10-13 07:40:47,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/data/bcf293d5a/133e924968c64d09b3ad50c94ee3e021/FLAG743d667f8 [2021-10-13 07:40:48,363 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:40:48,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2021-10-13 07:40:48,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/data/bcf293d5a/133e924968c64d09b3ad50c94ee3e021/FLAG743d667f8 [2021-10-13 07:40:48,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/data/bcf293d5a/133e924968c64d09b3ad50c94ee3e021 [2021-10-13 07:40:48,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:40:48,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:40:48,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:48,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:40:48,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:40:48,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:48" (1/1) ... [2021-10-13 07:40:48,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7dd5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:48, skipping insertion in model container [2021-10-13 07:40:48,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:48" (1/1) ... [2021-10-13 07:40:48,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:40:48,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:40:49,046 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c[15762,15775] [2021-10-13 07:40:49,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:49,069 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 07:40:49,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7606466a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:49, skipping insertion in model container [2021-10-13 07:40:49,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:49,070 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 07:40:49,072 INFO L168 Benchmark]: Toolchain (without parser) took 362.38 ms. Allocated memory is still 104.9 MB. Free memory was 66.8 MB in the beginning and 71.4 MB in the end (delta: -4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:49,073 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 74.8 MB in the end (delta: 31.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:40:49,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.41 ms. Allocated memory is still 104.9 MB. Free memory was 66.6 MB in the beginning and 71.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:49,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 74.8 MB in the end (delta: 31.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.41 ms. Allocated memory is still 104.9 MB. Free memory was 66.6 MB in the beginning and 71.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 444]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:40:51,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:40:51,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:40:51,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:40:51,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:40:51,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:40:51,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:40:51,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:40:51,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:40:51,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:40:51,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:40:51,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:40:51,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:40:51,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:40:51,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:40:51,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:40:51,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:40:51,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:40:51,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:40:51,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:40:51,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:40:51,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:40:51,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:40:51,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:40:51,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:40:51,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:40:51,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:40:51,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:40:51,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:40:51,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:40:51,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:40:51,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:40:51,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:40:51,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:40:51,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:40:51,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:40:51,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:40:51,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:40:51,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:40:51,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:40:51,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:40:51,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:40:51,476 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:40:51,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:40:51,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:40:51,477 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:40:51,478 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:40:51,478 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:40:51,478 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:40:51,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:40:51,478 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:40:51,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:40:51,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:40:51,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:40:51,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:40:51,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:40:51,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:40:51,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:40:51,481 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:40:51,481 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:40:51,481 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:40:51,482 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:40:51,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:40:51,482 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:40:51,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:40:51,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:40:51,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:40:51,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:40:51,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:51,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:40:51,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:40:51,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:40:51,484 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:40:51,484 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:51,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:40:51,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:40:51,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:40:51,485 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed98ebb1999cc1f1ce8b0aa16a3cd7cdfeeb781 [2021-10-13 07:40:51,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:40:51,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:40:51,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:40:51,907 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:40:51,908 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:40:51,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2021-10-13 07:40:51,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/data/e9c5e2901/6af64944b1f24237bc586bab4725a88e/FLAG476739290 [2021-10-13 07:40:52,610 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:40:52,611 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2021-10-13 07:40:52,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/data/e9c5e2901/6af64944b1f24237bc586bab4725a88e/FLAG476739290 [2021-10-13 07:40:52,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/data/e9c5e2901/6af64944b1f24237bc586bab4725a88e [2021-10-13 07:40:52,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:40:52,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:40:52,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:52,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:40:53,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:40:53,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:53,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77389b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53, skipping insertion in model container [2021-10-13 07:40:53,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:53,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:40:53,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:40:53,410 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c[15762,15775] [2021-10-13 07:40:53,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:53,452 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 07:40:53,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:40:53,557 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c[15762,15775] [2021-10-13 07:40:53,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:53,585 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:40:53,627 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c[15762,15775] [2021-10-13 07:40:53,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:53,651 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:40:53,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53 WrapperNode [2021-10-13 07:40:53,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:53,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:53,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:40:53,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:40:53,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53" (1/1) ... [2021-10-13 07:40:53,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53" (1/1) ... [2021-10-13 07:40:53,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:53,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:40:53,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:40:53,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:40:53,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53" (1/1) ... [2021-10-13 07:40:53,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53" (1/1) ... [2021-10-13 07:40:53,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53" (1/1) ... [2021-10-13 07:40:53,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53" (1/1) ... [2021-10-13 07:40:53,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53" (1/1) ... [2021-10-13 07:40:53,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53" (1/1) ... [2021-10-13 07:40:53,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53" (1/1) ... [2021-10-13 07:40:53,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:40:53,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:40:53,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:40:53,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:40:53,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53" (1/1) ... [2021-10-13 07:40:53,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:53,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:53,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:40:53,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:40:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:40:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:40:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:40:53,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:40:55,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:40:55,989 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-10-13 07:40:55,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:55 BoogieIcfgContainer [2021-10-13 07:40:55,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:40:55,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:40:55,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:40:55,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:40:55,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:40:52" (1/3) ... [2021-10-13 07:40:55,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f5dfe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:55, skipping insertion in model container [2021-10-13 07:40:55,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:53" (2/3) ... [2021-10-13 07:40:55,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f5dfe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:55, skipping insertion in model container [2021-10-13 07:40:55,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:55" (3/3) ... [2021-10-13 07:40:55,999 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2021-10-13 07:40:56,004 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:40:56,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:40:56,052 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:40:56,058 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:40:56,059 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:40:56,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 76 states have (on average 1.5789473684210527) internal successors, (120), 79 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:56,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:40:56,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:56,081 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:56,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1355288485, now seen corresponding path program 1 times [2021-10-13 07:40:56,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:56,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501298527] [2021-10-13 07:40:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:56,104 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:56,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:56,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:56,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:40:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:56,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:40:56,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:56,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:56,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:56,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501298527] [2021-10-13 07:40:56,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501298527] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:56,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:56,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:40:56,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307482517] [2021-10-13 07:40:56,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:40:56,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:56,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:40:56,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:40:56,558 INFO L87 Difference]: Start difference. First operand has 80 states, 76 states have (on average 1.5789473684210527) internal successors, (120), 79 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:56,592 INFO L93 Difference]: Finished difference Result 154 states and 233 transitions. [2021-10-13 07:40:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:40:56,594 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 07:40:56,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:56,603 INFO L225 Difference]: With dead ends: 154 [2021-10-13 07:40:56,604 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 07:40:56,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:40:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 07:40:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-13 07:40:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 75 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2021-10-13 07:40:56,647 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2021-10-13 07:40:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:56,647 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2021-10-13 07:40:56,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2021-10-13 07:40:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:40:56,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:56,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:56,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:56,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:56,867 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:56,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1892921914, now seen corresponding path program 1 times [2021-10-13 07:40:56,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:56,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564256647] [2021-10-13 07:40:56,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:56,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:56,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:56,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:56,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:40:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:57,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:40:57,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:57,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:57,221 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:57,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564256647] [2021-10-13 07:40:57,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564256647] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:57,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:57,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:40:57,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965881829] [2021-10-13 07:40:57,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:40:57,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:57,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:40:57,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:57,232 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:57,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:57,261 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2021-10-13 07:40:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:57,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 07:40:57,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:57,262 INFO L225 Difference]: With dead ends: 76 [2021-10-13 07:40:57,263 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 07:40:57,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 07:40:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-13 07:40:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:57,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2021-10-13 07:40:57,270 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2021-10-13 07:40:57,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:57,271 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2021-10-13 07:40:57,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2021-10-13 07:40:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:40:57,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:57,272 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:57,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:57,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:57,483 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:57,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1160602350, now seen corresponding path program 1 times [2021-10-13 07:40:57,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:57,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313647640] [2021-10-13 07:40:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:57,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:57,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:57,490 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:57,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:40:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:57,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:40:57,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:57,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:57,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:57,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313647640] [2021-10-13 07:40:57,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313647640] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:57,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:57,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:40:57,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173593680] [2021-10-13 07:40:57,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:40:57,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:57,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:40:57,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:57,947 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:57,993 INFO L93 Difference]: Finished difference Result 119 states and 175 transitions. [2021-10-13 07:40:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:40:57,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 07:40:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:57,995 INFO L225 Difference]: With dead ends: 119 [2021-10-13 07:40:57,995 INFO L226 Difference]: Without dead ends: 89 [2021-10-13 07:40:57,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:57,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-13 07:40:58,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 55. [2021-10-13 07:40:58,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 54 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2021-10-13 07:40:58,007 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 22 [2021-10-13 07:40:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:58,007 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2021-10-13 07:40:58,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2021-10-13 07:40:58,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 07:40:58,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:58,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:58,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:58,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:58,222 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:58,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:58,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1572373846, now seen corresponding path program 1 times [2021-10-13 07:40:58,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:58,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707600197] [2021-10-13 07:40:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:58,224 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:58,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:58,226 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:58,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:40:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:58,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:40:58,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:58,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:58,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:58,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707600197] [2021-10-13 07:40:58,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707600197] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:58,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:58,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:40:58,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140255272] [2021-10-13 07:40:58,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:58,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:58,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:58,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:58,581 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:58,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:58,646 INFO L93 Difference]: Finished difference Result 125 states and 184 transitions. [2021-10-13 07:40:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:58,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 07:40:58,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:58,647 INFO L225 Difference]: With dead ends: 125 [2021-10-13 07:40:58,648 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 07:40:58,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 07:40:58,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-10-13 07:40:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 73 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2021-10-13 07:40:58,660 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 23 [2021-10-13 07:40:58,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:58,661 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-10-13 07:40:58,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2021-10-13 07:40:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:40:58,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:58,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:58,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:58,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:58,876 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:58,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1956458727, now seen corresponding path program 1 times [2021-10-13 07:40:58,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:58,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860290248] [2021-10-13 07:40:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:58,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:58,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:58,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:58,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:40:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:59,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:40:59,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:59,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:59,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:59,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860290248] [2021-10-13 07:40:59,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860290248] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:59,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:59,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:40:59,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778003555] [2021-10-13 07:40:59,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:40:59,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:59,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:40:59,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:40:59,317 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:59,571 INFO L93 Difference]: Finished difference Result 507 states and 746 transitions. [2021-10-13 07:40:59,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 07:40:59,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 07:40:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:59,575 INFO L225 Difference]: With dead ends: 507 [2021-10-13 07:40:59,576 INFO L226 Difference]: Without dead ends: 439 [2021-10-13 07:40:59,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 121.9ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:40:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-10-13 07:40:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 189. [2021-10-13 07:40:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.398936170212766) internal successors, (263), 188 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 263 transitions. [2021-10-13 07:40:59,609 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 263 transitions. Word has length 25 [2021-10-13 07:40:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:59,610 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 263 transitions. [2021-10-13 07:40:59,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 263 transitions. [2021-10-13 07:40:59,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 07:40:59,613 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:59,613 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:59,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:59,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:59,830 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:59,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:59,830 INFO L82 PathProgramCache]: Analyzing trace with hash -792985208, now seen corresponding path program 1 times [2021-10-13 07:40:59,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:59,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889705130] [2021-10-13 07:40:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:59,831 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:59,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:59,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:59,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:41:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:00,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:41:00,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:00,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:00,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:00,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889705130] [2021-10-13 07:41:00,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889705130] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:00,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [640157092] [2021-10-13 07:41:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:00,370 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:41:00,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:41:00,373 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:41:00,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 07:41:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:00,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:41:00,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:41:00,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:41:00,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [640157092] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:00,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:41:00,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2021-10-13 07:41:00,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002087208] [2021-10-13 07:41:00,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:41:00,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:00,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:41:00,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:41:00,870 INFO L87 Difference]: Start difference. First operand 189 states and 263 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:01,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:01,047 INFO L93 Difference]: Finished difference Result 429 states and 608 transitions. [2021-10-13 07:41:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:41:01,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 07:41:01,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:01,051 INFO L225 Difference]: With dead ends: 429 [2021-10-13 07:41:01,051 INFO L226 Difference]: Without dead ends: 427 [2021-10-13 07:41:01,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:41:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-10-13 07:41:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 189. [2021-10-13 07:41:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.3882978723404256) internal successors, (261), 188 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:01,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 261 transitions. [2021-10-13 07:41:01,080 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 261 transitions. Word has length 40 [2021-10-13 07:41:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:01,081 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 261 transitions. [2021-10-13 07:41:01,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:01,081 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 261 transitions. [2021-10-13 07:41:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 07:41:01,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:01,084 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:01,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:01,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:01,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:01,496 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:41:01,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:01,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1758708758, now seen corresponding path program 1 times [2021-10-13 07:41:01,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:01,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248414712] [2021-10-13 07:41:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:01,497 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:01,517 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:01,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:41:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:01,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:41:01,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:41:01,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:41:02,041 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:02,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248414712] [2021-10-13 07:41:02,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248414712] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:02,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:02,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:41:02,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137679021] [2021-10-13 07:41:02,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:41:02,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:41:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:41:02,044 INFO L87 Difference]: Start difference. First operand 189 states and 261 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:02,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:02,133 INFO L93 Difference]: Finished difference Result 565 states and 778 transitions. [2021-10-13 07:41:02,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:41:02,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-13 07:41:02,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:02,138 INFO L225 Difference]: With dead ends: 565 [2021-10-13 07:41:02,138 INFO L226 Difference]: Without dead ends: 382 [2021-10-13 07:41:02,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:41:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-10-13 07:41:02,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 198. [2021-10-13 07:41:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3705583756345177) internal successors, (270), 197 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:02,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 270 transitions. [2021-10-13 07:41:02,174 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 270 transitions. Word has length 44 [2021-10-13 07:41:02,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:02,175 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 270 transitions. [2021-10-13 07:41:02,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 270 transitions. [2021-10-13 07:41:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 07:41:02,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:02,183 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:02,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:02,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:02,397 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:41:02,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:02,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1899257368, now seen corresponding path program 1 times [2021-10-13 07:41:02,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:02,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075772364] [2021-10-13 07:41:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:02,402 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:02,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:02,402 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:02,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:41:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:02,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:41:02,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:41:02,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:41:02,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:02,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075772364] [2021-10-13 07:41:02,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075772364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:02,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:02,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:41:02,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685793073] [2021-10-13 07:41:02,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:41:02,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:02,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:41:02,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:41:02,948 INFO L87 Difference]: Start difference. First operand 198 states and 270 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:03,018 INFO L93 Difference]: Finished difference Result 530 states and 725 transitions. [2021-10-13 07:41:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:41:03,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-13 07:41:03,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:03,021 INFO L225 Difference]: With dead ends: 530 [2021-10-13 07:41:03,021 INFO L226 Difference]: Without dead ends: 338 [2021-10-13 07:41:03,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:41:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-13 07:41:03,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 177. [2021-10-13 07:41:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.3522727272727273) internal successors, (238), 176 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 238 transitions. [2021-10-13 07:41:03,050 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 238 transitions. Word has length 44 [2021-10-13 07:41:03,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:03,050 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 238 transitions. [2021-10-13 07:41:03,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:03,050 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 238 transitions. [2021-10-13 07:41:03,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 07:41:03,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:03,051 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:03,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:03,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:03,264 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:41:03,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:03,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1942803224, now seen corresponding path program 1 times [2021-10-13 07:41:03,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:03,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857025934] [2021-10-13 07:41:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:03,266 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:03,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:03,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:03,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:41:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:03,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:41:03,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 07:41:03,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 07:41:03,966 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:03,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857025934] [2021-10-13 07:41:03,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857025934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:03,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [497688187] [2021-10-13 07:41:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:03,967 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:41:03,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:41:03,968 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:41:03,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-13 07:41:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:04,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:41:04,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 07:41:04,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 07:41:04,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [497688187] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:04,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999823800] [2021-10-13 07:41:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:04,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:41:04,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:41:04,648 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:41:04,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 07:41:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:04,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:41:04,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 07:41:05,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 07:41:05,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999823800] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:05,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:41:05,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-13 07:41:05,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092471229] [2021-10-13 07:41:05,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:41:05,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:05,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:41:05,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:41:05,290 INFO L87 Difference]: Start difference. First operand 177 states and 238 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:08,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:08,428 INFO L93 Difference]: Finished difference Result 1042 states and 1455 transitions. [2021-10-13 07:41:08,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 07:41:08,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-13 07:41:08,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:08,434 INFO L225 Difference]: With dead ends: 1042 [2021-10-13 07:41:08,434 INFO L226 Difference]: Without dead ends: 912 [2021-10-13 07:41:08,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 335.4ms TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-10-13 07:41:08,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-10-13 07:41:08,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 294. [2021-10-13 07:41:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.372013651877133) internal successors, (402), 293 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 402 transitions. [2021-10-13 07:41:08,496 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 402 transitions. Word has length 45 [2021-10-13 07:41:08,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:08,498 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 402 transitions. [2021-10-13 07:41:08,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:41:08,498 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 402 transitions. [2021-10-13 07:41:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 07:41:08,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:08,500 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:08,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:08,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:08,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-13 07:41:09,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:09,127 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:41:09,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:09,127 INFO L82 PathProgramCache]: Analyzing trace with hash 511998341, now seen corresponding path program 2 times [2021-10-13 07:41:09,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:09,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349207568] [2021-10-13 07:41:09,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:41:09,128 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:09,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:09,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:09,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:41:10,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:41:10,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-13 07:41:10,532 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:41:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:41:11,906 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:41:11,906 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:41:11,907 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:11,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:11,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:11,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:12,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:12,136 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:41:12,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:41:12 BoogieIcfgContainer [2021-10-13 07:41:12,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:41:12,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:41:12,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:41:12,306 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:41:12,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:55" (3/4) ... [2021-10-13 07:41:12,308 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:41:12,461 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:41:12,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:41:12,463 INFO L168 Benchmark]: Toolchain (without parser) took 19467.24 ms. Allocated memory was 56.6 MB in the beginning and 88.1 MB in the end (delta: 31.5 MB). Free memory was 33.7 MB in the beginning and 49.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 47.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:12,464 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 38.0 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:41:12,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.77 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 25.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:12,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.94 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 24.8 MB in the beginning and 54.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:12,466 INFO L168 Benchmark]: Boogie Preprocessor took 79.15 ms. Allocated memory is still 73.4 MB. Free memory was 54.5 MB in the beginning and 52.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:12,466 INFO L168 Benchmark]: RCFGBuilder took 2157.88 ms. Allocated memory is still 73.4 MB. Free memory was 52.1 MB in the beginning and 49.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:12,467 INFO L168 Benchmark]: TraceAbstraction took 16312.46 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 49.3 MB in the beginning and 39.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:12,467 INFO L168 Benchmark]: Witness Printer took 156.04 ms. Allocated memory is still 88.1 MB. Free memory was 39.5 MB in the beginning and 49.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:12,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 38.0 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 655.77 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 25.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.94 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 24.8 MB in the beginning and 54.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.15 ms. Allocated memory is still 73.4 MB. Free memory was 54.5 MB in the beginning and 52.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2157.88 ms. Allocated memory is still 73.4 MB. Free memory was 52.1 MB in the beginning and 49.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16312.46 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 49.3 MB in the beginning and 39.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. * Witness Printer took 156.04 ms. Allocated memory is still 88.1 MB. Free memory was 39.5 MB in the beginning and 49.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 786]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L150] int pumpRunning = 0; [L151] int systemActive = 1; [L317] int cleanupTimeShifts = 4; [L585] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L826] int waterLevel = 1; [L827] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L393] int retValue_acc ; [L394] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L817] int retValue_acc ; [L820] retValue_acc = 1 [L821] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L400] tmp = valid_product() [L402] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L844] COND TRUE waterLevel < 2 [L845] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L157] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L189] COND TRUE ! pumpRunning [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L906] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L909] COND FALSE !(waterLevel < 2) [L913] retValue_acc = 0 [L914] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] tmp = isHighWaterLevel() [L193] COND TRUE \read(tmp) [L214] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L123] tmp = getWaterLevel() [L125] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L157] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L832] COND TRUE waterLevel > 0 [L833] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L189] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L123] tmp = getWaterLevel() [L125] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L157] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L832] COND TRUE waterLevel > 0 [L833] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L189] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L123] tmp = getWaterLevel() [L125] COND TRUE tmp == 0 [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L127] tmp___0 = isPumpRunning() [L129] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L786] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 786]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 16083.4ms, OverallIterations: 10, TraceHistogramMax: 3, EmptinessCheckTime: 24.6ms, AutomataDifference: 3995.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 722 SDtfs, 1722 SDslu, 1765 SDs, 0 SdLazy, 322 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2862.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 827 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 643.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=294occurred in iteration=9, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 233.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 1487 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 286.1ms SsaConstructionTime, 2421.8ms SatisfiabilityAnalysisTime, 3062.5ms InterpolantComputationTime, 466 NumberOfCodeBlocks, 466 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 788 ConstructedInterpolants, 0 QuantifiedInterpolants, 1800 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2541 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 24 InterpolantComputations, 16 PerfectInterpolantSequences, 132/196 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 07:41:12,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad7a28d3-e4f0-4288-bf68-4d6902ece67a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...