./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V --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 d8d5749cb33f10edd647435755bf2e2192f6038b258c1bda289ea3f61ba8ee50 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:41:40,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:41:40,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:41:40,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:41:40,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:41:40,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:41:40,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:41:40,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:41:40,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:41:40,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:41:40,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:41:40,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:41:40,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:41:40,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:41:40,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:41:40,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:41:40,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:41:40,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:41:40,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:41:40,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:41:40,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:41:40,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:41:40,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:41:40,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:41:40,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:41:40,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:41:40,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:41:40,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:41:40,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:41:40,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:41:40,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:41:40,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:41:40,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:41:40,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:41:40,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:41:40,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:41:40,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:41:40,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:41:40,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:41:40,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:41:40,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:41:40,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:41:40,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:41:40,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:41:40,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:41:40,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:41:40,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:41:40,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:41:40,573 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:41:40,573 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:41:40,573 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:41:40,573 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:41:40,574 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:41:40,575 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:41:40,575 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:41:40,575 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:41:40,575 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:41:40,576 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:41:40,576 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:41:40,576 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:41:40,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:41:40,577 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:41:40,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:41:40,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:41:40,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:41:40,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:41:40,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:41:40,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:41:40,579 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:41:40,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:41:40,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:41:40,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:41:40,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:41:40,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:41:40,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:41:40,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:41:40,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:41:40,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:41:40,582 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:41:40,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:41:40,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:41:40,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:41:40,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:41:40,590 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_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8d5749cb33f10edd647435755bf2e2192f6038b258c1bda289ea3f61ba8ee50 [2021-11-23 03:41:40,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:41:40,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:41:40,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:41:40,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:41:40,960 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:41:40,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c [2021-11-23 03:41:41,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/data/d4e0024a7/45d9b97ea0354f068a429d047340c211/FLAG0ce9676db [2021-11-23 03:41:41,519 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:41:41,523 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c [2021-11-23 03:41:41,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/data/d4e0024a7/45d9b97ea0354f068a429d047340c211/FLAG0ce9676db [2021-11-23 03:41:41,869 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/data/d4e0024a7/45d9b97ea0354f068a429d047340c211 [2021-11-23 03:41:41,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:41:41,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:41:41,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:41:41,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:41:41,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:41:41,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:41" (1/1) ... [2021-11-23 03:41:41,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@546031a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:41, skipping insertion in model container [2021-11-23 03:41:41,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:41" (1/1) ... [2021-11-23 03:41:41,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:41:41,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:41:42,110 WARN L230 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_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c[3064,3077] [2021-11-23 03:41:42,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:41:42,248 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:41:42,307 WARN L230 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_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c[3064,3077] [2021-11-23 03:41:42,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:41:42,412 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:41:42,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42 WrapperNode [2021-11-23 03:41:42,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:41:42,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:41:42,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:41:42,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:41:42,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42" (1/1) ... [2021-11-23 03:41:42,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42" (1/1) ... [2021-11-23 03:41:42,494 INFO L137 Inliner]: procedures = 53, calls = 151, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 224 [2021-11-23 03:41:42,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:41:42,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:41:42,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:41:42,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:41:42,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42" (1/1) ... [2021-11-23 03:41:42,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42" (1/1) ... [2021-11-23 03:41:42,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42" (1/1) ... [2021-11-23 03:41:42,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42" (1/1) ... [2021-11-23 03:41:42,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42" (1/1) ... [2021-11-23 03:41:42,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42" (1/1) ... [2021-11-23 03:41:42,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42" (1/1) ... [2021-11-23 03:41:42,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:41:42,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:41:42,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:41:42,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:41:42,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42" (1/1) ... [2021-11-23 03:41:42,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:41:42,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:41:42,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:41:42,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:41:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:41:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 03:41:42,666 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 03:41:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 03:41:42,667 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 03:41:42,667 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 03:41:42,667 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 03:41:42,667 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 03:41:42,668 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 03:41:42,668 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 03:41:42,668 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 03:41:42,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:41:42,668 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 03:41:42,669 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 03:41:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:41:42,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:41:42,792 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:41:42,794 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:41:43,134 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:41:43,281 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:41:43,282 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:41:43,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:43 BoogieIcfgContainer [2021-11-23 03:41:43,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:41:43,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:41:43,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:41:43,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:41:43,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:41:41" (1/3) ... [2021-11-23 03:41:43,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a038553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:43, skipping insertion in model container [2021-11-23 03:41:43,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:42" (2/3) ... [2021-11-23 03:41:43,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a038553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:43, skipping insertion in model container [2021-11-23 03:41:43,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:43" (3/3) ... [2021-11-23 03:41:43,291 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2021-11-23 03:41:43,297 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:41:43,297 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:41:43,347 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:41:43,355 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:41:43,356 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:41:43,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:41:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:41:43,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:43,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:43,381 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:43,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:43,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2009331302, now seen corresponding path program 1 times [2021-11-23 03:41:43,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:43,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665455279] [2021-11-23 03:41:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:43,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:43,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:43,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665455279] [2021-11-23 03:41:43,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665455279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:43,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:43,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:41:43,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416826027] [2021-11-23 03:41:43,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:43,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:41:43,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:43,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:41:43,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:41:43,633 INFO L87 Difference]: Start difference. First operand has 48 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:41:43,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:43,722 INFO L93 Difference]: Finished difference Result 94 states and 125 transitions. [2021-11-23 03:41:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:41:43,725 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-23 03:41:43,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:43,736 INFO L225 Difference]: With dead ends: 94 [2021-11-23 03:41:43,736 INFO L226 Difference]: Without dead ends: 43 [2021-11-23 03:41:43,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:41:43,746 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:43,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:41:43,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-23 03:41:43,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-23 03:41:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 33 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:41:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-11-23 03:41:43,800 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 16 [2021-11-23 03:41:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:43,800 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-11-23 03:41:43,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:41:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-11-23 03:41:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:41:43,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:43,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:43,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:41:43,804 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:43,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash -27539796, now seen corresponding path program 1 times [2021-11-23 03:41:43,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:43,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940339869] [2021-11-23 03:41:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:43,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:43,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:43,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940339869] [2021-11-23 03:41:43,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940339869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:43,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:43,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:41:43,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253792253] [2021-11-23 03:41:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:43,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:41:43,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:43,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:41:43,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:43,927 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:41:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:43,988 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2021-11-23 03:41:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:41:43,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-23 03:41:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:43,994 INFO L225 Difference]: With dead ends: 63 [2021-11-23 03:41:43,995 INFO L226 Difference]: Without dead ends: 35 [2021-11-23 03:41:43,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:41:43,997 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:43,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:41:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-23 03:41:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-23 03:41:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 28 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 03:41:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-11-23 03:41:44,006 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 17 [2021-11-23 03:41:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:44,007 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-11-23 03:41:44,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:41:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-11-23 03:41:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:41:44,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:44,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:44,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:41:44,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:44,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:44,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1817648900, now seen corresponding path program 1 times [2021-11-23 03:41:44,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:44,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260406984] [2021-11-23 03:41:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:44,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:44,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:44,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260406984] [2021-11-23 03:41:44,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260406984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:44,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:44,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:41:44,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309822049] [2021-11-23 03:41:44,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:44,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:41:44,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:44,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:41:44,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:41:44,113 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:41:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:44,295 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2021-11-23 03:41:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:41:44,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-23 03:41:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:44,298 INFO L225 Difference]: With dead ends: 99 [2021-11-23 03:41:44,298 INFO L226 Difference]: Without dead ends: 66 [2021-11-23 03:41:44,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:41:44,300 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:44,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 150 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:41:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-23 03:41:44,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-11-23 03:41:44,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 49 states have internal predecessors, (53), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 03:41:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2021-11-23 03:41:44,330 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 19 [2021-11-23 03:41:44,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:44,331 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2021-11-23 03:41:44,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:41:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2021-11-23 03:41:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:41:44,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:44,335 INFO L514 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] [2021-11-23 03:41:44,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:41:44,339 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:44,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2086819571, now seen corresponding path program 1 times [2021-11-23 03:41:44,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:44,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424573498] [2021-11-23 03:41:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:44,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:44,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:44,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424573498] [2021-11-23 03:41:44,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424573498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:44,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:44,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:41:44,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269000512] [2021-11-23 03:41:44,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:44,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:41:44,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:44,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:41:44,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:41:44,522 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:41:44,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:44,816 INFO L93 Difference]: Finished difference Result 287 states and 357 transitions. [2021-11-23 03:41:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:41:44,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-11-23 03:41:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:44,820 INFO L225 Difference]: With dead ends: 287 [2021-11-23 03:41:44,820 INFO L226 Difference]: Without dead ends: 227 [2021-11-23 03:41:44,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:41:44,823 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 140 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:44,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 182 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:41:44,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-23 03:41:44,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 187. [2021-11-23 03:41:44,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 126 states have (on average 1.2380952380952381) internal successors, (156), 140 states have internal predecessors, (156), 29 states have call successors, (29), 29 states have call predecessors, (29), 31 states have return successors, (41), 29 states have call predecessors, (41), 29 states have call successors, (41) [2021-11-23 03:41:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 226 transitions. [2021-11-23 03:41:44,883 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 226 transitions. Word has length 22 [2021-11-23 03:41:44,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:44,884 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 226 transitions. [2021-11-23 03:41:44,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:41:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 226 transitions. [2021-11-23 03:41:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:41:44,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:44,891 INFO L514 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] [2021-11-23 03:41:44,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:41:44,892 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:44,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1843176107, now seen corresponding path program 1 times [2021-11-23 03:41:44,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:44,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293165831] [2021-11-23 03:41:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:44,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:41:44,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:44,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293165831] [2021-11-23 03:41:44,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293165831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:44,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:44,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:41:44,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775150413] [2021-11-23 03:41:44,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:44,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:41:44,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:41:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:41:45,000 INFO L87 Difference]: Start difference. First operand 187 states and 226 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:41:45,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:45,112 INFO L93 Difference]: Finished difference Result 522 states and 632 transitions. [2021-11-23 03:41:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:41:45,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2021-11-23 03:41:45,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:45,117 INFO L225 Difference]: With dead ends: 522 [2021-11-23 03:41:45,118 INFO L226 Difference]: Without dead ends: 337 [2021-11-23 03:41:45,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:41:45,121 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 68 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:45,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 157 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:41:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-23 03:41:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 284. [2021-11-23 03:41:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 193 states have (on average 1.2124352331606219) internal successors, (234), 214 states have internal predecessors, (234), 42 states have call successors, (42), 40 states have call predecessors, (42), 48 states have return successors, (60), 42 states have call predecessors, (60), 42 states have call successors, (60) [2021-11-23 03:41:45,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 336 transitions. [2021-11-23 03:41:45,159 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 336 transitions. Word has length 25 [2021-11-23 03:41:45,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:45,159 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 336 transitions. [2021-11-23 03:41:45,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:41:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 336 transitions. [2021-11-23 03:41:45,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:41:45,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:45,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:45,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:41:45,162 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:45,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:45,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1989059275, now seen corresponding path program 1 times [2021-11-23 03:41:45,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:45,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613094042] [2021-11-23 03:41:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:45,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:41:45,189 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:41:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:41:45,240 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:41:45,240 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:41:45,241 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:41:45,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:41:45,246 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-23 03:41:45,250 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:41:45,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:41:45 BoogieIcfgContainer [2021-11-23 03:41:45,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:41:45,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:41:45,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:41:45,323 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:41:45,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:43" (3/4) ... [2021-11-23 03:41:45,325 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 03:41:45,396 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:41:45,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:41:45,397 INFO L158 Benchmark]: Toolchain (without parser) took 3520.60ms. Allocated memory was 88.1MB in the beginning and 123.7MB in the end (delta: 35.7MB). Free memory was 45.7MB in the beginning and 48.5MB in the end (delta: -2.8MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2021-11-23 03:41:45,398 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:41:45,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.27ms. Allocated memory is still 88.1MB. Free memory was 45.5MB in the beginning and 64.7MB in the end (delta: -19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 03:41:45,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.60ms. Allocated memory is still 88.1MB. Free memory was 64.7MB in the beginning and 62.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:41:45,399 INFO L158 Benchmark]: Boogie Preprocessor took 49.66ms. Allocated memory is still 88.1MB. Free memory was 62.2MB in the beginning and 60.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:41:45,399 INFO L158 Benchmark]: RCFGBuilder took 738.79ms. Allocated memory is still 88.1MB. Free memory was 60.5MB in the beginning and 47.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 03:41:45,400 INFO L158 Benchmark]: TraceAbstraction took 2035.76ms. Allocated memory was 88.1MB in the beginning and 123.7MB in the end (delta: 35.7MB). Free memory was 46.6MB in the beginning and 53.6MB in the end (delta: -6.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2021-11-23 03:41:45,400 INFO L158 Benchmark]: Witness Printer took 74.54ms. Allocated memory is still 123.7MB. Free memory was 53.6MB in the beginning and 48.5MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:41:45,402 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 532.27ms. Allocated memory is still 88.1MB. Free memory was 45.5MB in the beginning and 64.7MB in the end (delta: -19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.60ms. Allocated memory is still 88.1MB. Free memory was 64.7MB in the beginning and 62.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.66ms. Allocated memory is still 88.1MB. Free memory was 62.2MB in the beginning and 60.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 738.79ms. Allocated memory is still 88.1MB. Free memory was 60.5MB in the beginning and 47.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2035.76ms. Allocated memory was 88.1MB in the beginning and 123.7MB in the end (delta: 35.7MB). Free memory was 46.6MB in the beginning and 53.6MB in the end (delta: -6.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Witness Printer took 74.54ms. Allocated memory is still 123.7MB. Free memory was 53.6MB in the beginning and 48.5MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 155]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L260] int pumpRunning = 0; [L261] int systemActive = 1; [L465] int cleanupTimeShifts = 4; [L730] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L538] int retValue_acc ; [L539] int tmp ; [L543] FCALL select_helpers() [L544] FCALL select_features() [L545] CALL, EXPR valid_product() [L456] int retValue_acc ; [L459] retValue_acc = 1 [L460] return (retValue_acc); [L545] RET, EXPR valid_product() [L545] tmp = valid_product() [L547] COND TRUE \read(tmp) [L549] FCALL setup() [L550] CALL runTest() [L532] CALL test() [L191] int splverifierCounter ; [L192] int tmp ; [L193] int tmp___0 ; [L194] int tmp___1 ; [L195] int tmp___2 ; [L198] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L200] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L202] COND TRUE splverifierCounter < 4 [L208] tmp = __VERIFIER_nondet_int() [L210] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L212] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 [L212] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L218] tmp___0 = __VERIFIER_nondet_int() [L220] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L222] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L87] COND FALSE !(\read(methaneLevelCritical)) [L90] methaneLevelCritical = 1 [L222] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L228] tmp___2 = __VERIFIER_nondet_int() [L230] COND TRUE \read(tmp___2) VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=0, tmp___2=1, waterLevel=2] [L245] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L267] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L274] COND TRUE \read(systemActive) [L276] CALL processEnvironment() [L296] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L299] COND TRUE ! pumpRunning [L301] CALL, EXPR isHighWaterLevel() [L393] int retValue_acc ; [L394] int tmp ; [L395] int tmp___0 ; [L399] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); [L399] RET, EXPR isHighWaterSensorDry() [L399] tmp = isHighWaterSensorDry() [L401] COND FALSE !(\read(tmp)) [L404] tmp___0 = 1 [L406] retValue_acc = tmp___0 [L407] return (retValue_acc); [L301] RET, EXPR isHighWaterLevel() [L301] tmp = isHighWaterLevel() [L303] COND TRUE \read(tmp) [L305] CALL activatePump() [L324] pumpRunning = 1 [L305] RET activatePump() [L276] RET processEnvironment() [L282] CALL __utac_acc__Specification1_spec__1() [L162] int tmp ; [L163] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L167] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L167] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L167] tmp = isMethaneLevelCritical() [L169] COND TRUE \read(tmp) [L171] CALL, EXPR isPumpRunning() [L348] int retValue_acc ; [L351] retValue_acc = pumpRunning [L352] return (retValue_acc); [L171] RET, EXPR isPumpRunning() [L171] tmp___0 = isPumpRunning() [L173] COND TRUE \read(tmp___0) [L175] CALL __automaton_fail() [L155] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 246 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 239 mSDsluCounter, 584 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 479 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 344 IncrementalHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 209 mSDtfsCounter, 344 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 97 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 250 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-23 03:41:45,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e32c0-0213-48d1-9435-b5dd24c5e4d9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE