./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS --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 5399744cbc243992ccbbf21bf0e09dd5dced55fce1050770392b2964c31c4145 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:45:56,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:45:56,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:45:56,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:45:56,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:45:56,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:45:56,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:45:56,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:45:56,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:45:56,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:45:56,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:45:56,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:45:56,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:45:56,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:45:56,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:45:56,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:45:56,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:45:56,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:45:56,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:45:56,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:45:56,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:45:56,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:45:56,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:45:56,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:45:56,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:45:56,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:45:56,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:45:56,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:45:56,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:45:56,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:45:56,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:45:56,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:45:56,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:45:56,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:45:56,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:45:56,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:45:56,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:45:56,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:45:56,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:45:56,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:45:56,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:45:56,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:45:56,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:45:56,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:45:56,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:45:56,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:45:56,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:45:56,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:45:56,428 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:45:56,428 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:45:56,428 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:45:56,429 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:45:56,429 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:45:56,429 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:45:56,430 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:45:56,430 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:45:56,430 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:45:56,431 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:45:56,431 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:45:56,431 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:45:56,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:45:56,432 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:45:56,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:45:56,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:45:56,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:45:56,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:45:56,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:45:56,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:45:56,434 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:45:56,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:45:56,435 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:45:56,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:45:56,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:45:56,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:45:56,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:45:56,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:45:56,437 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:45:56,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:45:56,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:45:56,438 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:45:56,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:45:56,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:45:56,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:45:56,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5399744cbc243992ccbbf21bf0e09dd5dced55fce1050770392b2964c31c4145 [2022-11-19 06:45:56,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:45:56,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:45:56,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:45:56,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:45:56,781 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:45:56,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2022-11-19 06:45:56,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/data/7571876ea/f120fe3798624d0bb9532186656808be/FLAG2c5c621b0 [2022-11-19 06:45:57,497 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:45:57,498 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2022-11-19 06:45:57,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/data/7571876ea/f120fe3798624d0bb9532186656808be/FLAG2c5c621b0 [2022-11-19 06:45:57,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/data/7571876ea/f120fe3798624d0bb9532186656808be [2022-11-19 06:45:57,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:45:57,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:45:57,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:45:57,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:45:57,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:45:57,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:45:57" (1/1) ... [2022-11-19 06:45:57,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51665c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:57, skipping insertion in model container [2022-11-19 06:45:57,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:45:57" (1/1) ... [2022-11-19 06:45:57,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:45:57,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:45:58,194 WARN L234 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_725f6b30-6ecf-4471-a789-f474a943d4df/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[17260,17273] [2022-11-19 06:45:58,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:45:58,215 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:45:58,303 WARN L234 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_725f6b30-6ecf-4471-a789-f474a943d4df/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[17260,17273] [2022-11-19 06:45:58,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:45:58,323 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:45:58,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58 WrapperNode [2022-11-19 06:45:58,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:45:58,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:45:58,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:45:58,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:45:58,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2022-11-19 06:45:58,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2022-11-19 06:45:58,399 INFO L138 Inliner]: procedures = 52, calls = 93, calls flagged for inlining = 21, calls inlined = 17, statements flattened = 167 [2022-11-19 06:45:58,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:45:58,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:45:58,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:45:58,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:45:58,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2022-11-19 06:45:58,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2022-11-19 06:45:58,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2022-11-19 06:45:58,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2022-11-19 06:45:58,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2022-11-19 06:45:58,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2022-11-19 06:45:58,457 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2022-11-19 06:45:58,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2022-11-19 06:45:58,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:45:58,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:45:58,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:45:58,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:45:58,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (1/1) ... [2022-11-19 06:45:58,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:45:58,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:45:58,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:45:58,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:45:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:45:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 06:45:58,565 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 06:45:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 06:45:58,565 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 06:45:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 06:45:58,566 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 06:45:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 06:45:58,566 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 06:45:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:45:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 06:45:58,567 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 06:45:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:45:58,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:45:58,656 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:45:58,659 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:45:58,972 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:45:59,133 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:45:59,133 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:45:59,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:45:59 BoogieIcfgContainer [2022-11-19 06:45:59,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:45:59,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:45:59,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:45:59,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:45:59,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:45:57" (1/3) ... [2022-11-19 06:45:59,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af389c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:45:59, skipping insertion in model container [2022-11-19 06:45:59,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:58" (2/3) ... [2022-11-19 06:45:59,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af389c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:45:59, skipping insertion in model container [2022-11-19 06:45:59,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:45:59" (3/3) ... [2022-11-19 06:45:59,156 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2022-11-19 06:45:59,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:45:59,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:45:59,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:45:59,293 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2199320c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:45:59,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:45:59,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 35 states have internal predecessors, (42), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 06:45:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 06:45:59,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:59,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:45:59,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:45:59,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:59,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1558093598, now seen corresponding path program 1 times [2022-11-19 06:45:59,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:45:59,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236132534] [2022-11-19 06:45:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:59,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:45:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:45:59,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:45:59,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236132534] [2022-11-19 06:45:59,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236132534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:59,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:45:59,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:45:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544991511] [2022-11-19 06:45:59,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:59,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:45:59,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:45:59,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:45:59,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:45:59,723 INFO L87 Difference]: Start difference. First operand has 44 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 35 states have internal predecessors, (42), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:59,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:59,849 INFO L93 Difference]: Finished difference Result 86 states and 117 transitions. [2022-11-19 06:45:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:45:59,861 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 06:45:59,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:59,871 INFO L225 Difference]: With dead ends: 86 [2022-11-19 06:45:59,871 INFO L226 Difference]: Without dead ends: 39 [2022-11-19 06:45:59,875 INFO L412 NwaCegarLoop]: 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 [2022-11-19 06:45:59,878 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 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 [2022-11-19 06:45:59,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:45:59,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-19 06:45:59,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-19 06:45:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 31 states have internal predecessors, (34), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 06:45:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2022-11-19 06:45:59,926 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 12 [2022-11-19 06:45:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:59,927 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2022-11-19 06:45:59,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2022-11-19 06:45:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 06:45:59,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:59,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:45:59,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:45:59,930 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:45:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:59,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1163100395, now seen corresponding path program 1 times [2022-11-19 06:45:59,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:45:59,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78812647] [2022-11-19 06:45:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:59,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:45:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:46:00,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:00,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78812647] [2022-11-19 06:46:00,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78812647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:00,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:00,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:46:00,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430057763] [2022-11-19 06:46:00,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:00,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:46:00,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:46:00,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:46:00,059 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:00,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:00,107 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2022-11-19 06:46:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:46:00,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 06:46:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:00,109 INFO L225 Difference]: With dead ends: 55 [2022-11-19 06:46:00,110 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 06:46:00,110 INFO L412 NwaCegarLoop]: 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 [2022-11-19 06:46:00,112 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 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 [2022-11-19 06:46:00,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:46:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 06:46:00,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 06:46:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 26 states have internal predecessors, (28), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 06:46:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-11-19 06:46:00,124 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 13 [2022-11-19 06:46:00,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:00,124 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-11-19 06:46:00,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-11-19 06:46:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 06:46:00,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:00,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:00,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:46:00,127 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:00,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash 322173214, now seen corresponding path program 1 times [2022-11-19 06:46:00,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:00,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325606579] [2022-11-19 06:46:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:00,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:46:00,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:00,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325606579] [2022-11-19 06:46:00,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325606579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:00,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:00,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:46:00,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920123076] [2022-11-19 06:46:00,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:00,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:46:00,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:00,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:46:00,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:46:00,317 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:00,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:00,369 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2022-11-19 06:46:00,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:46:00,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 06:46:00,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:00,371 INFO L225 Difference]: With dead ends: 60 [2022-11-19 06:46:00,371 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 06:46:00,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:46:00,374 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:00,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:46:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 06:46:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 06:46:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 26 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 06:46:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-11-19 06:46:00,382 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 15 [2022-11-19 06:46:00,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:00,382 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-11-19 06:46:00,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-11-19 06:46:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 06:46:00,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:00,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:00,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:46:00,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:00,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:00,385 INFO L85 PathProgramCache]: Analyzing trace with hash 423999087, now seen corresponding path program 1 times [2022-11-19 06:46:00,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:00,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295947779] [2022-11-19 06:46:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:00,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:46:00,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:00,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295947779] [2022-11-19 06:46:00,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295947779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:00,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:00,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:46:00,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810829347] [2022-11-19 06:46:00,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:00,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:46:00,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:46:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:46:00,832 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:00,984 INFO L93 Difference]: Finished difference Result 104 states and 126 transitions. [2022-11-19 06:46:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:46:00,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 06:46:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:00,987 INFO L225 Difference]: With dead ends: 104 [2022-11-19 06:46:00,987 INFO L226 Difference]: Without dead ends: 75 [2022-11-19 06:46:00,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:46:00,989 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:00,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 99 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:46:00,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-19 06:46:01,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2022-11-19 06:46:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 50 states have internal predecessors, (51), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-19 06:46:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2022-11-19 06:46:01,008 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 18 [2022-11-19 06:46:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:01,008 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2022-11-19 06:46:01,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2022-11-19 06:46:01,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 06:46:01,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:01,010 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:01,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:46:01,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:01,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:01,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1801096068, now seen corresponding path program 1 times [2022-11-19 06:46:01,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:01,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40622857] [2022-11-19 06:46:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:01,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:46:01,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:01,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40622857] [2022-11-19 06:46:01,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40622857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:46:01,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479844852] [2022-11-19 06:46:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:01,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:46:01,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:46:01,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:46:01,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:46:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:01,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:46:01,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:46:01,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:46:01,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479844852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:01,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:46:01,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-19 06:46:01,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873204811] [2022-11-19 06:46:01,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:01,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:46:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:46:01,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:46:01,494 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 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) [2022-11-19 06:46:01,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:01,574 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2022-11-19 06:46:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:46:01,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 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 34 [2022-11-19 06:46:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:01,582 INFO L225 Difference]: With dead ends: 88 [2022-11-19 06:46:01,582 INFO L226 Difference]: Without dead ends: 59 [2022-11-19 06:46:01,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:46:01,586 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 16 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:01,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 57 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:46:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-19 06:46:01,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-19 06:46:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.170731707317073) internal successors, (48), 47 states have internal predecessors, (48), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 06:46:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2022-11-19 06:46:01,630 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 34 [2022-11-19 06:46:01,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:01,631 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2022-11-19 06:46:01,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 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) [2022-11-19 06:46:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2022-11-19 06:46:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-19 06:46:01,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:01,640 INFO L195 NwaCegarLoop]: 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] [2022-11-19 06:46:01,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 06:46:01,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:46:01,860 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:01,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:01,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1238139398, now seen corresponding path program 1 times [2022-11-19 06:46:01,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:01,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917466107] [2022-11-19 06:46:01,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:01,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:46:02,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:02,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917466107] [2022-11-19 06:46:02,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917466107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:02,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:02,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 06:46:02,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606729632] [2022-11-19 06:46:02,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:02,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:46:02,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:02,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:46:02,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:46:02,513 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:46:02,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:02,892 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2022-11-19 06:46:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 06:46:02,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-11-19 06:46:02,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:02,896 INFO L225 Difference]: With dead ends: 115 [2022-11-19 06:46:02,896 INFO L226 Difference]: Without dead ends: 83 [2022-11-19 06:46:02,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-19 06:46:02,908 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 101 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:02,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 78 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:46:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-19 06:46:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2022-11-19 06:46:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 64 states have internal predecessors, (66), 11 states have call successors, (11), 11 states have call predecessors, (11), 12 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-19 06:46:02,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2022-11-19 06:46:02,944 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 36 [2022-11-19 06:46:02,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:02,944 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2022-11-19 06:46:02,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:46:02,945 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2022-11-19 06:46:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-19 06:46:02,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:02,946 INFO L195 NwaCegarLoop]: 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] [2022-11-19 06:46:02,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:46:02,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:02,947 INFO L85 PathProgramCache]: Analyzing trace with hash 84918593, now seen corresponding path program 1 times [2022-11-19 06:46:02,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:02,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546868103] [2022-11-19 06:46:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:02,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:46:03,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:03,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546868103] [2022-11-19 06:46:03,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546868103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:46:03,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449109607] [2022-11-19 06:46:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:03,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:46:03,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:46:03,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:46:03,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:46:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:03,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-19 06:46:03,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 06:46:04,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 06:46:04,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449109607] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:04,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [218991201] [2022-11-19 06:46:04,915 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-19 06:46:04,915 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:46:04,919 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:46:04,926 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:46:04,927 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:46:08,696 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 28 for LOIs [2022-11-19 06:46:08,701 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2022-11-19 06:46:08,860 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2022-11-19 06:46:08,862 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:46:11,905 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1749#(and (= |timeShift_getWaterLevel_~retValue_acc~7#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~10#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1| 0)) (= 1 ~systemActive~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (<= ~methaneLevelCritical~0 0) (<= 0 ~head~0.base) (= |timeShift_getWaterLevel_~retValue_acc~7#1| ~waterLevel~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~10#1|) (<= 0 ~methaneLevelCritical~0) (<= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 06:46:11,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:46:11,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:46:11,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 11] total 28 [2022-11-19 06:46:11,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968657932] [2022-11-19 06:46:11,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:46:11,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-19 06:46:11,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-19 06:46:11,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1996, Unknown=0, NotChecked=0, Total=2256 [2022-11-19 06:46:11,910 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 28 states, 25 states have (on average 3.4) internal successors, (85), 26 states have internal predecessors, (85), 9 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 06:46:13,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:13,967 INFO L93 Difference]: Finished difference Result 164 states and 183 transitions. [2022-11-19 06:46:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-19 06:46:13,983 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.4) internal successors, (85), 26 states have internal predecessors, (85), 9 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 39 [2022-11-19 06:46:13,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:13,985 INFO L225 Difference]: With dead ends: 164 [2022-11-19 06:46:13,986 INFO L226 Difference]: Without dead ends: 137 [2022-11-19 06:46:13,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=608, Invalid=3948, Unknown=0, NotChecked=0, Total=4556 [2022-11-19 06:46:13,989 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 455 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:13,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 370 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:46:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-19 06:46:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 108. [2022-11-19 06:46:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 84 states have internal predecessors, (88), 15 states have call successors, (15), 15 states have call predecessors, (15), 16 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-19 06:46:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2022-11-19 06:46:14,015 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 39 [2022-11-19 06:46:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:14,015 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2022-11-19 06:46:14,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.4) internal successors, (85), 26 states have internal predecessors, (85), 9 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 06:46:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2022-11-19 06:46:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 06:46:14,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:14,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:14,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:14,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 06:46:14,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:14,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1628649548, now seen corresponding path program 2 times [2022-11-19 06:46:14,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:14,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916189250] [2022-11-19 06:46:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:14,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:46:14,251 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:46:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:46:14,312 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:46:14,312 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:46:14,314 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:46:14,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:46:14,320 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:14,325 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:46:14,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:46:14 BoogieIcfgContainer [2022-11-19 06:46:14,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:46:14,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:46:14,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:46:14,434 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:46:14,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:45:59" (3/4) ... [2022-11-19 06:46:14,440 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 06:46:14,549 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:46:14,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:46:14,550 INFO L158 Benchmark]: Toolchain (without parser) took 16753.50ms. Allocated memory was 134.2MB in the beginning and 302.0MB in the end (delta: 167.8MB). Free memory was 99.9MB in the beginning and 123.8MB in the end (delta: -24.0MB). Peak memory consumption was 143.3MB. Max. memory is 16.1GB. [2022-11-19 06:46:14,551 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 60.2MB in the beginning and 60.2MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:46:14,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 525.70ms. Allocated memory is still 134.2MB. Free memory was 99.6MB in the beginning and 101.6MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 06:46:14,552 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.29ms. Allocated memory is still 134.2MB. Free memory was 101.6MB in the beginning and 99.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:46:14,552 INFO L158 Benchmark]: Boogie Preprocessor took 59.84ms. Allocated memory is still 134.2MB. Free memory was 99.6MB in the beginning and 98.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:46:14,553 INFO L158 Benchmark]: RCFGBuilder took 679.52ms. Allocated memory is still 134.2MB. Free memory was 98.0MB in the beginning and 76.1MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-19 06:46:14,553 INFO L158 Benchmark]: TraceAbstraction took 15286.13ms. Allocated memory was 134.2MB in the beginning and 302.0MB in the end (delta: 167.8MB). Free memory was 75.5MB in the beginning and 129.1MB in the end (delta: -53.6MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. [2022-11-19 06:46:14,553 INFO L158 Benchmark]: Witness Printer took 115.83ms. Allocated memory is still 302.0MB. Free memory was 129.1MB in the beginning and 123.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 06:46:14,560 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 60.2MB in the beginning and 60.2MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 525.70ms. Allocated memory is still 134.2MB. Free memory was 99.6MB in the beginning and 101.6MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.29ms. Allocated memory is still 134.2MB. Free memory was 101.6MB in the beginning and 99.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.84ms. Allocated memory is still 134.2MB. Free memory was 99.6MB in the beginning and 98.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 679.52ms. Allocated memory is still 134.2MB. Free memory was 98.0MB in the beginning and 76.1MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 15286.13ms. Allocated memory was 134.2MB in the beginning and 302.0MB in the end (delta: 167.8MB). Free memory was 75.5MB in the beginning and 129.1MB in the end (delta: -53.6MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. * Witness Printer took 115.83ms. Allocated memory is still 302.0MB. Free memory was 129.1MB in the beginning and 123.8MB in the end (delta: 5.2MB). 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: 879]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L626] int methaneLevelCritical = 0; [L722] int pumpRunning = 0; [L625] int waterLevel = 1; [L723] int systemActive = 1; [L416] int cleanupTimeShifts = 4; [L497] int retValue_acc ; [L498] int tmp ; [L502] FCALL select_helpers() [L503] FCALL select_features() [L504] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); [L504] RET, EXPR valid_product() [L504] tmp = valid_product() [L506] COND TRUE \read(tmp) [L508] FCALL setup() [L509] CALL runTest() [L488] CALL test() [L556] int splverifierCounter ; [L557] int tmp ; [L558] int tmp___0 ; [L559] int tmp___1 ; [L560] int tmp___2 ; [L563] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L567] COND TRUE splverifierCounter < 4 [L573] tmp = __VERIFIER_nondet_int() [L575] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L577] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L643] COND TRUE waterLevel < 2 [L644] waterLevel = waterLevel + 1 [L577] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND FALSE !(\read(tmp___2)) [L599] tmp___1 = __VERIFIER_nondet_int() [L601] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=2] [L608] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L730] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L737] COND TRUE \read(systemActive) [L739] CALL processEnvironment() [L759] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L762] COND TRUE ! pumpRunning [L764] CALL, EXPR isHighWaterLevel() [L856] int retValue_acc ; [L857] int tmp ; [L858] int tmp___0 ; [L862] CALL, EXPR isHighWaterSensorDry() [L705] int retValue_acc ; [L708] COND FALSE !(waterLevel < 2) [L712] retValue_acc = 0 [L713] return (retValue_acc); [L862] RET, EXPR isHighWaterSensorDry() [L862] tmp = isHighWaterSensorDry() [L864] COND FALSE !(\read(tmp)) [L867] tmp___0 = 1 [L869] retValue_acc = tmp___0 [L870] return (retValue_acc); [L764] RET, EXPR isHighWaterLevel() [L764] tmp = isHighWaterLevel() [L766] COND TRUE \read(tmp) [L768] CALL activatePump() [L787] pumpRunning = 1 [L768] RET activatePump() [L739] RET processEnvironment() [L745] CALL __utac_acc__Specification4_spec__1() [L885] int tmp ; [L886] int tmp___0 ; [L890] CALL, EXPR getWaterLevel() [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); [L890] RET, EXPR getWaterLevel() [L890] tmp = getWaterLevel() [L892] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L745] RET __utac_acc__Specification4_spec__1() [L608] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=2] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=2] [L567] COND TRUE splverifierCounter < 4 [L573] tmp = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=2] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=2] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=2] [L608] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L730] COND TRUE \read(pumpRunning) [L732] CALL lowerWaterLevel() [L631] COND TRUE waterLevel > 0 [L632] waterLevel = waterLevel - 1 [L732] RET lowerWaterLevel() [L737] COND TRUE \read(systemActive) [L739] CALL processEnvironment() [L759] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L762] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L777] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L739] RET processEnvironment() [L745] CALL __utac_acc__Specification4_spec__1() [L885] int tmp ; [L886] int tmp___0 ; [L890] CALL, EXPR getWaterLevel() [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); [L890] RET, EXPR getWaterLevel() [L890] tmp = getWaterLevel() [L892] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L745] RET __utac_acc__Specification4_spec__1() [L608] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=1] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=1] [L567] COND TRUE splverifierCounter < 4 [L573] tmp = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=1] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=1] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND FALSE !(\read(tmp___2)) [L599] tmp___1 = __VERIFIER_nondet_int() [L601] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L608] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L730] COND TRUE \read(pumpRunning) [L732] CALL lowerWaterLevel() [L631] COND TRUE waterLevel > 0 [L632] waterLevel = waterLevel - 1 [L732] RET lowerWaterLevel() [L737] COND TRUE \read(systemActive) [L739] CALL processEnvironment() [L759] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L762] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L777] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L739] RET processEnvironment() [L745] CALL __utac_acc__Specification4_spec__1() [L885] int tmp ; [L886] int tmp___0 ; [L890] CALL, EXPR getWaterLevel() [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); [L890] RET, EXPR getWaterLevel() [L890] tmp = getWaterLevel() [L892] COND TRUE tmp == 0 [L894] CALL, EXPR isPumpRunning() [L811] int retValue_acc ; [L814] retValue_acc = pumpRunning [L815] return (retValue_acc); [L894] RET, EXPR isPumpRunning() [L894] tmp___0 = isPumpRunning() [L896] COND TRUE \read(tmp___0) [L898] CALL __automaton_fail() [L879] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.1s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 660 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 654 mSDsluCounter, 711 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 472 mSDsCounter, 332 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 909 IncrementalHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 332 mSolverCounterUnsat, 239 mSDtfsCounter, 909 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=7, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 45 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 297 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 269 ConstructedInterpolants, 0 QuantifiedInterpolants, 1448 SizeOfPredicates, 9 NumberOfNonLiveVariables, 451 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 42/80 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! [2022-11-19 06:46:14,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725f6b30-6ecf-4471-a789-f474a943d4df/bin/utaipan-I9t0OCRTmS/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