./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI --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 4c4adbf609ddd472cb6a462753c6f5cc9af64c97af02da4060f4102700285790 --- 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-5e519f3 [2022-11-03 02:03:49,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:03:49,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:03:49,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:03:49,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:03:49,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:03:49,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:03:49,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:03:49,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:03:49,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:03:49,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:03:49,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:03:49,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:03:49,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:03:49,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:03:49,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:03:49,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:03:49,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:03:49,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:03:49,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:03:49,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:03:49,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:03:49,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:03:49,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:03:49,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:03:49,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:03:49,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:03:49,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:03:49,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:03:49,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:03:49,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:03:49,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:03:49,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:03:49,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:03:49,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:03:49,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:03:49,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:03:49,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:03:49,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:03:49,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:03:49,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:03:49,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:03:49,481 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:03:49,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:03:49,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:03:49,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:03:49,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:03:49,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:03:49,484 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:03:49,484 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:03:49,484 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:03:49,485 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:03:49,486 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:03:49,486 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:03:49,486 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:03:49,486 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:03:49,487 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:03:49,487 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:03:49,487 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:03:49,487 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:03:49,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:03:49,488 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:03:49,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:03:49,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:03:49,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:03:49,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:03:49,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:03:49,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:03:49,491 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:03:49,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:03:49,491 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:03:49,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:03:49,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:03:49,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:03:49,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:03:49,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:03:49,493 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:03:49,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:03:49,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:03:49,494 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:03:49,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:03:49,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:03:49,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:03:49,495 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_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c4adbf609ddd472cb6a462753c6f5cc9af64c97af02da4060f4102700285790 [2022-11-03 02:03:49,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:03:49,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:03:49,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:03:49,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:03:49,806 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:03:49,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c [2022-11-03 02:03:49,897 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/data/a317f4179/df3bd4b1450d43539937fc559f3d07c1/FLAGfed392b60 [2022-11-03 02:03:50,490 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:03:50,494 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c [2022-11-03 02:03:50,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/data/a317f4179/df3bd4b1450d43539937fc559f3d07c1/FLAGfed392b60 [2022-11-03 02:03:50,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/data/a317f4179/df3bd4b1450d43539937fc559f3d07c1 [2022-11-03 02:03:50,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:03:50,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:03:50,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:03:50,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:03:50,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:03:50,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:03:50" (1/1) ... [2022-11-03 02:03:50,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486d9b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:50, skipping insertion in model container [2022-11-03 02:03:50,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:03:50" (1/1) ... [2022-11-03 02:03:50,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:03:50,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:03:51,170 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c[8617,8630] [2022-11-03 02:03:51,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:03:51,289 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:03:51,354 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c[8617,8630] [2022-11-03 02:03:51,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:03:51,425 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:03:51,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51 WrapperNode [2022-11-03 02:03:51,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:03:51,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:03:51,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:03:51,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:03:51,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (1/1) ... [2022-11-03 02:03:51,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (1/1) ... [2022-11-03 02:03:51,493 INFO L138 Inliner]: procedures = 54, calls = 156, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 250 [2022-11-03 02:03:51,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:03:51,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:03:51,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:03:51,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:03:51,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (1/1) ... [2022-11-03 02:03:51,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (1/1) ... [2022-11-03 02:03:51,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (1/1) ... [2022-11-03 02:03:51,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (1/1) ... [2022-11-03 02:03:51,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (1/1) ... [2022-11-03 02:03:51,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (1/1) ... [2022-11-03 02:03:51,519 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (1/1) ... [2022-11-03 02:03:51,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (1/1) ... [2022-11-03 02:03:51,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:03:51,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:03:51,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:03:51,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:03:51,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (1/1) ... [2022-11-03 02:03:51,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:03:51,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:51,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:03:51,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:03:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:03:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-03 02:03:51,631 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-03 02:03:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 02:03:51,631 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 02:03:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 02:03:51,632 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 02:03:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-03 02:03:51,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-03 02:03:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-03 02:03:51,632 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-03 02:03:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-03 02:03:51,633 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-03 02:03:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-03 02:03:51,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-03 02:03:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:03:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-03 02:03:51,634 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-03 02:03:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:03:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:03:51,752 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:03:51,755 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:03:52,181 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:03:52,318 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:03:52,319 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:03:52,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:52 BoogieIcfgContainer [2022-11-03 02:03:52,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:03:52,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:03:52,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:03:52,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:03:52,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:03:50" (1/3) ... [2022-11-03 02:03:52,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77861af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:03:52, skipping insertion in model container [2022-11-03 02:03:52,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:51" (2/3) ... [2022-11-03 02:03:52,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77861af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:03:52, skipping insertion in model container [2022-11-03 02:03:52,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:52" (3/3) ... [2022-11-03 02:03:52,333 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product45.cil.c [2022-11-03 02:03:52,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:03:52,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:03:52,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:03:52,418 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;@2ba1b11e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:03:52,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:03:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 40 states have (on average 1.4) internal successors, (56), 48 states have internal predecessors, (56), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 02:03:52,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:03:52,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:52,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:52,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:52,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1548548902, now seen corresponding path program 1 times [2022-11-03 02:03:52,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:52,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770834547] [2022-11-03 02:03:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:52,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:52,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:52,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770834547] [2022-11-03 02:03:52,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770834547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:52,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:52,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:03:52,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487981903] [2022-11-03 02:03:52,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:52,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:03:52,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:52,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:03:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:03:52,707 INFO L87 Difference]: Start difference. First operand has 64 states, 40 states have (on average 1.4) internal successors, (56), 48 states have internal predecessors, (56), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:03:52,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:52,800 INFO L93 Difference]: Finished difference Result 126 states and 169 transitions. [2022-11-03 02:03:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:03:52,803 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-03 02:03:52,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:52,813 INFO L225 Difference]: With dead ends: 126 [2022-11-03 02:03:52,814 INFO L226 Difference]: Without dead ends: 59 [2022-11-03 02:03:52,817 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 [2022-11-03 02:03:52,821 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:52,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:03:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-03 02:03:52,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-03 02:03:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 44 states have internal predecessors, (48), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 02:03:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2022-11-03 02:03:52,867 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 17 [2022-11-03 02:03:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:52,867 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2022-11-03 02:03:52,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:03:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2022-11-03 02:03:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:03:52,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:52,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:52,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:03:52,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:52,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:52,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1977184354, now seen corresponding path program 1 times [2022-11-03 02:03:52,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:52,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040511500] [2022-11-03 02:03:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:52,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:53,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:53,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040511500] [2022-11-03 02:03:53,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040511500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:53,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:53,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:03:53,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191106026] [2022-11-03 02:03:53,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:53,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:53,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:53,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:53,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:53,086 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:03:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:53,177 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2022-11-03 02:03:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:53,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-03 02:03:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:53,179 INFO L225 Difference]: With dead ends: 95 [2022-11-03 02:03:53,179 INFO L226 Difference]: Without dead ends: 51 [2022-11-03 02:03:53,180 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 [2022-11-03 02:03:53,182 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:53,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 89 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:53,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-03 02:03:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-03 02:03:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.3125) internal successors, (42), 39 states have internal predecessors, (42), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 02:03:53,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-11-03 02:03:53,207 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 18 [2022-11-03 02:03:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:53,208 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-11-03 02:03:53,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:03:53,208 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-11-03 02:03:53,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:03:53,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:53,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:53,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:03:53,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:53,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:53,211 INFO L85 PathProgramCache]: Analyzing trace with hash -570975999, now seen corresponding path program 1 times [2022-11-03 02:03:53,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:53,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882616121] [2022-11-03 02:03:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:53,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:53,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:53,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882616121] [2022-11-03 02:03:53,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882616121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:53,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:53,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:03:53,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728067104] [2022-11-03 02:03:53,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:53,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:53,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:53,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:53,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:53,340 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-03 02:03:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:53,391 INFO L93 Difference]: Finished difference Result 100 states and 127 transitions. [2022-11-03 02:03:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:53,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2022-11-03 02:03:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:53,395 INFO L225 Difference]: With dead ends: 100 [2022-11-03 02:03:53,395 INFO L226 Difference]: Without dead ends: 51 [2022-11-03 02:03:53,396 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 [2022-11-03 02:03:53,397 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:53,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 47 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:03:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-03 02:03:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-03 02:03:53,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.28125) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 02:03:53,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2022-11-03 02:03:53,407 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 20 [2022-11-03 02:03:53,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:53,408 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2022-11-03 02:03:53,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-03 02:03:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2022-11-03 02:03:53,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:03:53,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:53,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:53,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:03:53,410 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:53,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:53,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1305235151, now seen corresponding path program 1 times [2022-11-03 02:03:53,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:53,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403337383] [2022-11-03 02:03:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:53,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:53,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:53,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403337383] [2022-11-03 02:03:53,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403337383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:53,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:53,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:03:53,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499773793] [2022-11-03 02:03:53,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:53,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:53,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:53,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:53,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:03:53,656 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:03:53,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:53,990 INFO L93 Difference]: Finished difference Result 165 states and 204 transitions. [2022-11-03 02:03:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:03:53,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-11-03 02:03:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:53,993 INFO L225 Difference]: With dead ends: 165 [2022-11-03 02:03:53,993 INFO L226 Difference]: Without dead ends: 116 [2022-11-03 02:03:53,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:03:53,995 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 116 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:53,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 157 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:03:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-03 02:03:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2022-11-03 02:03:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 80 states have internal predecessors, (92), 18 states have call successors, (18), 15 states have call predecessors, (18), 18 states have return successors, (23), 19 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-03 02:03:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2022-11-03 02:03:54,018 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 30 [2022-11-03 02:03:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:54,019 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2022-11-03 02:03:54,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:03:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2022-11-03 02:03:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:03:54,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:54,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:54,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:03:54,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash -160661025, now seen corresponding path program 1 times [2022-11-03 02:03:54,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:54,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790232026] [2022-11-03 02:03:54,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:54,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:54,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:54,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790232026] [2022-11-03 02:03:54,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790232026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:54,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:54,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:03:54,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016294407] [2022-11-03 02:03:54,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:54,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:54,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:54,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:54,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:03:54,326 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:03:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:54,535 INFO L93 Difference]: Finished difference Result 326 states and 402 transitions. [2022-11-03 02:03:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:03:54,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-03 02:03:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:54,550 INFO L225 Difference]: With dead ends: 326 [2022-11-03 02:03:54,550 INFO L226 Difference]: Without dead ends: 218 [2022-11-03 02:03:54,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:03:54,552 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 96 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:54,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 202 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:54,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-03 02:03:54,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 206. [2022-11-03 02:03:54,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 137 states have (on average 1.218978102189781) internal successors, (167), 148 states have internal predecessors, (167), 34 states have call successors, (34), 28 states have call predecessors, (34), 34 states have return successors, (44), 36 states have call predecessors, (44), 34 states have call successors, (44) [2022-11-03 02:03:54,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 245 transitions. [2022-11-03 02:03:54,636 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 245 transitions. Word has length 31 [2022-11-03 02:03:54,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:54,637 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 245 transitions. [2022-11-03 02:03:54,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:03:54,638 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 245 transitions. [2022-11-03 02:03:54,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 02:03:54,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:54,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:54,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:03:54,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:54,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash -591971774, now seen corresponding path program 1 times [2022-11-03 02:03:54,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:54,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719266891] [2022-11-03 02:03:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:54,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:55,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:55,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719266891] [2022-11-03 02:03:55,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719266891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:55,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:55,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:03:55,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126565539] [2022-11-03 02:03:55,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:55,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:03:55,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:03:55,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:03:55,053 INFO L87 Difference]: Start difference. First operand 206 states and 245 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 02:03:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:55,302 INFO L93 Difference]: Finished difference Result 418 states and 513 transitions. [2022-11-03 02:03:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:03:55,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2022-11-03 02:03:55,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:55,305 INFO L225 Difference]: With dead ends: 418 [2022-11-03 02:03:55,305 INFO L226 Difference]: Without dead ends: 310 [2022-11-03 02:03:55,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:03:55,308 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 135 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:55,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 313 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:03:55,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-03 02:03:55,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 288. [2022-11-03 02:03:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 192 states have (on average 1.1979166666666667) internal successors, (230), 206 states have internal predecessors, (230), 48 states have call successors, (48), 40 states have call predecessors, (48), 47 states have return successors, (63), 50 states have call predecessors, (63), 48 states have call successors, (63) [2022-11-03 02:03:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 341 transitions. [2022-11-03 02:03:55,354 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 341 transitions. Word has length 34 [2022-11-03 02:03:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:55,355 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 341 transitions. [2022-11-03 02:03:55,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 02:03:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 341 transitions. [2022-11-03 02:03:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 02:03:55,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:55,357 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:55,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:03:55,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash 924459008, now seen corresponding path program 1 times [2022-11-03 02:03:55,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:55,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240270244] [2022-11-03 02:03:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:55,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:55,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:55,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240270244] [2022-11-03 02:03:55,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240270244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:55,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619597619] [2022-11-03 02:03:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:55,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:55,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:55,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:55,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:03:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:55,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 02:03:55,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:56,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:56,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619597619] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:56,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1659491309] [2022-11-03 02:03:56,727 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-03 02:03:56,727 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:03:56,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:03:56,737 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:03:56,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:03:58,643 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 294 for LOIs [2022-11-03 02:03:58,716 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 295 for LOIs [2022-11-03 02:04:03,824 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 292 for LOIs [2022-11-03 02:04:04,697 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 293 for LOIs [2022-11-03 02:04:05,129 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 44 for LOIs [2022-11-03 02:04:05,138 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:04:56,870 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3439#(and (= (select (select |#memory_int| 8) 1) 0) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~5#1|) (= 104 (select (select |#memory_int| 5) 4)) (= 3 (select |#length| 10)) (= 109 (select (select |#memory_int| 12) 3)) (= (select |#length| 6) 5) (= (select |#valid| 26) 1) (= 116 (select (select |#memory_int| 5) 3)) (= (select (select |#memory_int| 11) 1) 102) (= (select |#valid| 9) 1) (= (select (select |#memory_int| 11) 3) 0) (= (select |#length| 4) 13) (= (select (select |#memory_int| 6) 0) 67) (= (select |#valid| 11) 1) (= (select |#valid| 27) 1) (= (select (select |#memory_int| 15) 1) 32) (= 30 (select |#length| 23)) (= (select |#length| 24) 9) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 7 (select |#length| 12)) (= (select (select |#memory_int| 5) 6) 0) (= (select (select |#memory_int| 14) 0) 79) (= 2 (select |#length| 1)) (= 3 (select |#length| 13)) (= (select |#length| 17) 30) (= 9 (select |#length| 18)) (= (select |#length| 19) 21) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= |timeShift_getWaterLevel_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|) (= (select |#length| 22) 21) (= (select (select |#memory_int| 6) 2) 73) (= 110 (select (select |#memory_int| 13) 1)) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~5#1|) (= (select |#valid| 18) 1) (= 102 (select (select |#memory_int| 11) 2)) (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= (select |#valid| 22) 1) (= 30 (select |#length| 26)) (= (select (select |#memory_int| 7) 0) 79) (= (select (select |#memory_int| 7) 1) 75) (= 1 ~systemActive~0) (= (select (select |#memory_int| 16) 0) 10) (= (select |#length| 15) 3) (= (select (select |#memory_int| 10) 0) 79) (= |old(~pumpRunning~0)| 0) (= (select |#valid| 24) 1) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (= (select |#length| 8) 2) (= 117 (select (select |#memory_int| 12) 2)) (= (select |#valid| 12) 1) (= (select (select |#memory_int| 11) 0) 79) (= 77 (select (select |#memory_int| 5) 1)) (= (select |#valid| 28) 1) (= 7 (select |#length| 5)) (<= ~methaneLevelCritical~0 0) (= 112 (select (select |#memory_int| 12) 4)) (= (select |#valid| 4) 1) (= (select (select |#memory_int| 13) 0) 79) (= (select (select |#memory_int| 16) 1) 0) (<= 0 ~head~0.base) (= 25 (select |#length| 25)) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1| 0) (= (select (select |#memory_int| 12) 6) 0) (= 101 (select (select |#memory_int| 5) 2)) (= 2 (select |#length| 16)) (= (select |#valid| 21) 1) (= (select (select |#memory_int| 5) 0) 44) (<= 0 ~methaneLevelCritical~0) (= (select |#length| 21) 9) (= (select |#valid| 14) 1) (= |old(~waterLevel~0)| ~waterLevel~0) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 12) 5) 58) (= 30 (select |#length| 20)) (= (select (select |#memory_int| 7) 2) 0) (= (select |#valid| 25) 1) (= (select |#length| 9) 13) (= (select (select |#memory_int| 14) 3) 0) (<= ~head~0.base 0) (= (select |#valid| 2) 1) (= 58 (select (select |#memory_int| 5) 5)) (= |#NULL.offset| 0) (= (select (select |#memory_int| 13) 2) 0) (= (select (select |#memory_int| 10) 2) 0) (= (select (select |#memory_int| 12) 1) 80) (= 84 (select (select |#memory_int| 6) 3)) (= (select |#length| 27) 9) (= (select (select |#memory_int| 1) 0) 48) (= 41 (select (select |#memory_int| 15) 0)) (= (select |#valid| 23) 1) (= 110 (select (select |#memory_int| 10) 1)) (= 82 (select (select |#memory_int| 6) 1)) (= (select (select |#memory_int| 6) 4) 0) (= (select |#valid| 19) 1) (= (select (select |#memory_int| 14) 1) 102) (= (select |#valid| 16) 1) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= 3 (select |#length| 7)) (= (select (select |#memory_int| 15) 2) 0) (= (select |#valid| 6) 1) (= 102 (select (select |#memory_int| 14) 2)) (= (select (select |#memory_int| 1) 1) 0) (= 44 (select (select |#memory_int| 12) 0)) (= (select |#length| 11) 4) (= (select |#valid| 17) 1) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= 41 (select (select |#memory_int| 8) 0)) (= (select |#length| 28) 25) (= 4 (select |#length| 14)) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|))' at error location [2022-11-03 02:04:56,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:04:56,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:04:56,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 26 [2022-11-03 02:04:56,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347919399] [2022-11-03 02:04:56,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:04:56,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 02:04:56,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:56,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 02:04:56,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=2436, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 02:04:56,875 INFO L87 Difference]: Start difference. First operand 288 states and 341 transitions. Second operand has 26 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 6 states have call successors, (15), 5 states have call predecessors, (15), 12 states have return successors, (15), 11 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-03 02:05:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:01,219 INFO L93 Difference]: Finished difference Result 1610 states and 1976 transitions. [2022-11-03 02:05:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-03 02:05:01,219 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 6 states have call successors, (15), 5 states have call predecessors, (15), 12 states have return successors, (15), 11 states have call predecessors, (15), 6 states have call successors, (15) Word has length 39 [2022-11-03 02:05:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:01,228 INFO L225 Difference]: With dead ends: 1610 [2022-11-03 02:05:01,228 INFO L226 Difference]: Without dead ends: 1324 [2022-11-03 02:05:01,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4649 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=1120, Invalid=11536, Unknown=0, NotChecked=0, Total=12656 [2022-11-03 02:05:01,235 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 755 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:01,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1416 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 02:05:01,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2022-11-03 02:05:01,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1214. [2022-11-03 02:05:01,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 820 states have (on average 1.1878048780487804) internal successors, (974), 858 states have internal predecessors, (974), 204 states have call successors, (204), 171 states have call predecessors, (204), 189 states have return successors, (276), 206 states have call predecessors, (276), 204 states have call successors, (276) [2022-11-03 02:05:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1454 transitions. [2022-11-03 02:05:01,370 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1454 transitions. Word has length 39 [2022-11-03 02:05:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:01,371 INFO L495 AbstractCegarLoop]: Abstraction has 1214 states and 1454 transitions. [2022-11-03 02:05:01,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 6 states have call successors, (15), 5 states have call predecessors, (15), 12 states have return successors, (15), 11 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-03 02:05:01,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1454 transitions. [2022-11-03 02:05:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 02:05:01,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:01,374 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:01,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:01,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:05:01,599 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2072716145, now seen corresponding path program 1 times [2022-11-03 02:05:01,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:05:01,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610682853] [2022-11-03 02:05:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:01,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:05:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:05:01,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:05:01,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610682853] [2022-11-03 02:05:01,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610682853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:01,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:05:01,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:05:01,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750402147] [2022-11-03 02:05:01,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:01,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:05:01,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:01,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:05:01,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:05:01,796 INFO L87 Difference]: Start difference. First operand 1214 states and 1454 transitions. Second operand has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:05:02,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:02,562 INFO L93 Difference]: Finished difference Result 2843 states and 3499 transitions. [2022-11-03 02:05:02,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:05:02,563 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2022-11-03 02:05:02,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:02,598 INFO L225 Difference]: With dead ends: 2843 [2022-11-03 02:05:02,599 INFO L226 Difference]: Without dead ends: 1954 [2022-11-03 02:05:02,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:05:02,602 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 211 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:02,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 157 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:05:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-11-03 02:05:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1840. [2022-11-03 02:05:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1241 states have (on average 1.1676067687348912) internal successors, (1449), 1293 states have internal predecessors, (1449), 309 states have call successors, (309), 258 states have call predecessors, (309), 289 states have return successors, (419), 316 states have call predecessors, (419), 309 states have call successors, (419) [2022-11-03 02:05:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2177 transitions. [2022-11-03 02:05:02,789 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2177 transitions. Word has length 42 [2022-11-03 02:05:02,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:02,790 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 2177 transitions. [2022-11-03 02:05:02,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:05:02,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2177 transitions. [2022-11-03 02:05:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 02:05:02,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:02,794 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:02,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:05:02,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:02,796 INFO L85 PathProgramCache]: Analyzing trace with hash -286999275, now seen corresponding path program 1 times [2022-11-03 02:05:02,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:05:02,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253999216] [2022-11-03 02:05:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:02,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:05:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:05:02,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:05:02,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253999216] [2022-11-03 02:05:02,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253999216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:05:02,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253158237] [2022-11-03 02:05:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:02,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:05:02,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:05:02,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:05:02,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:05:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:03,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:05:03,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:05:03,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:05:03,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253158237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:03,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:05:03,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-11-03 02:05:03,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606864692] [2022-11-03 02:05:03,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:03,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:05:03,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:05:03,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:05:03,245 INFO L87 Difference]: Start difference. First operand 1840 states and 2177 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-03 02:05:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:03,859 INFO L93 Difference]: Finished difference Result 2745 states and 3284 transitions. [2022-11-03 02:05:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:05:03,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 67 [2022-11-03 02:05:03,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:03,865 INFO L225 Difference]: With dead ends: 2745 [2022-11-03 02:05:03,866 INFO L226 Difference]: Without dead ends: 937 [2022-11-03 02:05:03,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:05:03,875 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 127 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:03,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 177 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:05:03,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-11-03 02:05:03,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 727. [2022-11-03 02:05:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 491 states have (on average 1.1588594704684319) internal successors, (569), 515 states have internal predecessors, (569), 119 states have call successors, (119), 113 states have call predecessors, (119), 116 states have return successors, (144), 118 states have call predecessors, (144), 119 states have call successors, (144) [2022-11-03 02:05:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 832 transitions. [2022-11-03 02:05:03,971 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 832 transitions. Word has length 67 [2022-11-03 02:05:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:03,972 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 832 transitions. [2022-11-03 02:05:03,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-03 02:05:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 832 transitions. [2022-11-03 02:05:03,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 02:05:03,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:03,975 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:04,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:04,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 02:05:04,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:04,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:04,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1344512781, now seen corresponding path program 2 times [2022-11-03 02:05:04,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:05:04,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301393150] [2022-11-03 02:05:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:04,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:05:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:05:04,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:05:04,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301393150] [2022-11-03 02:05:04,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301393150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:05:04,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552570780] [2022-11-03 02:05:04,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:05:04,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:05:04,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:05:04,305 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:05:04,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:05:04,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 02:05:04,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:05:04,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 02:05:04,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:05:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:05:04,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:05:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-03 02:05:05,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552570780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:05:05,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2056556626] [2022-11-03 02:05:05,108 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-11-03 02:05:05,108 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:05:05,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:05:05,110 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:05:05,110 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:05:12,513 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 294 for LOIs [2022-11-03 02:05:12,567 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 299 for LOIs [2022-11-03 02:05:14,285 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 299 for LOIs [2022-11-03 02:05:15,784 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 292 for LOIs [2022-11-03 02:05:16,151 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 316 for LOIs [2022-11-03 02:05:16,249 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:05:59,410 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20884#(and (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~5#1|) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (= ~head~0.offset 0) (= ~methaneLevelCritical~0 |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1|) (= |timeShift_getWaterLevel_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~5#1|) (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (<= 2 |old(~waterLevel~0)|) (= |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1| 0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|))' at error location [2022-11-03 02:05:59,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:05:59,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:05:59,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 19 [2022-11-03 02:05:59,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066099711] [2022-11-03 02:05:59,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:05:59,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 02:05:59,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:59,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 02:05:59,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1810, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 02:05:59,414 INFO L87 Difference]: Start difference. First operand 727 states and 832 transitions. Second operand has 19 states, 17 states have (on average 6.117647058823529) internal successors, (104), 18 states have internal predecessors, (104), 9 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (21), 10 states have call predecessors, (21), 9 states have call successors, (21) [2022-11-03 02:06:05,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:05,475 INFO L93 Difference]: Finished difference Result 3087 states and 3772 transitions. [2022-11-03 02:06:05,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-03 02:06:05,476 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.117647058823529) internal successors, (104), 18 states have internal predecessors, (104), 9 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (21), 10 states have call predecessors, (21), 9 states have call successors, (21) Word has length 67 [2022-11-03 02:06:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:05,491 INFO L225 Difference]: With dead ends: 3087 [2022-11-03 02:06:05,491 INFO L226 Difference]: Without dead ends: 2362 [2022-11-03 02:06:05,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 181 SyntacticMatches, 6 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8326 ImplicationChecksByTransitivity, 46.8s TimeCoverageRelationStatistics Valid=1961, Invalid=19501, Unknown=0, NotChecked=0, Total=21462 [2022-11-03 02:06:05,500 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1222 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 2908 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 4031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 2908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:05,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 909 Invalid, 4031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 2908 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:06:05,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2022-11-03 02:06:05,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2131. [2022-11-03 02:06:05,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2131 states, 1431 states have (on average 1.1320754716981132) internal successors, (1620), 1506 states have internal predecessors, (1620), 365 states have call successors, (365), 329 states have call predecessors, (365), 334 states have return successors, (465), 354 states have call predecessors, (465), 365 states have call successors, (465) [2022-11-03 02:06:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 2450 transitions. [2022-11-03 02:06:05,823 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 2450 transitions. Word has length 67 [2022-11-03 02:06:05,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:05,824 INFO L495 AbstractCegarLoop]: Abstraction has 2131 states and 2450 transitions. [2022-11-03 02:06:05,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.117647058823529) internal successors, (104), 18 states have internal predecessors, (104), 9 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (21), 10 states have call predecessors, (21), 9 states have call successors, (21) [2022-11-03 02:06:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 2450 transitions. [2022-11-03 02:06:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 02:06:05,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:05,827 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:05,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:06:06,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:06:06,041 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:06,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:06,041 INFO L85 PathProgramCache]: Analyzing trace with hash 328364801, now seen corresponding path program 1 times [2022-11-03 02:06:06,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:06,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120140720] [2022-11-03 02:06:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:06,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:06:06,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:06,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120140720] [2022-11-03 02:06:06,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120140720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:06:06,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137394020] [2022-11-03 02:06:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:06,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:06:06,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:06,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:06:06,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:06:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:06,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-03 02:06:06,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:06,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:06:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:06:07,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137394020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:06:07,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1494769336] [2022-11-03 02:06:07,586 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-03 02:06:07,588 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:06:07,589 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:06:07,590 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:06:07,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:06:11,990 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 46 for LOIs [2022-11-03 02:06:11,998 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 45 for LOIs [2022-11-03 02:06:12,228 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 42 for LOIs [2022-11-03 02:06:12,539 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 44 for LOIs [2022-11-03 02:06:12,593 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 24 for LOIs [2022-11-03 02:06:12,595 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 41 for LOIs [2022-11-03 02:06:12,601 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 43 for LOIs [2022-11-03 02:06:12,607 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:06:20,705 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29434#(and (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~5#1|) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (= ~head~0.offset 0) (= ~methaneLevelCritical~0 |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1|) (= |timeShift_getWaterLevel_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~5#1|) (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (<= 0 ~head~0.base) (= |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1| 0) (= |old(~waterLevel~0)| ~waterLevel~0) (<= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|))' at error location [2022-11-03 02:06:20,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:06:20,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:06:20,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 12] total 32 [2022-11-03 02:06:20,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746938692] [2022-11-03 02:06:20,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:06:20,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 02:06:20,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:20,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 02:06:20,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=4152, Unknown=0, NotChecked=0, Total=4556 [2022-11-03 02:06:20,709 INFO L87 Difference]: Start difference. First operand 2131 states and 2450 transitions. Second operand has 32 states, 24 states have (on average 4.375) internal successors, (105), 25 states have internal predecessors, (105), 10 states have call successors, (24), 5 states have call predecessors, (24), 13 states have return successors, (27), 15 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-03 02:06:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:24,564 INFO L93 Difference]: Finished difference Result 3317 states and 3893 transitions. [2022-11-03 02:06:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-03 02:06:24,566 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 4.375) internal successors, (105), 25 states have internal predecessors, (105), 10 states have call successors, (24), 5 states have call predecessors, (24), 13 states have return successors, (27), 15 states have call predecessors, (27), 10 states have call successors, (27) Word has length 73 [2022-11-03 02:06:24,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:24,568 INFO L225 Difference]: With dead ends: 3317 [2022-11-03 02:06:24,568 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:06:24,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 181 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4074 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=1314, Invalid=11568, Unknown=0, NotChecked=0, Total=12882 [2022-11-03 02:06:24,579 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 676 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:24,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 458 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:06:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:06:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:06:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:06:24,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2022-11-03 02:06:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:24,581 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:06:24,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 4.375) internal successors, (105), 25 states have internal predecessors, (105), 10 states have call successors, (24), 5 states have call predecessors, (24), 13 states have return successors, (27), 15 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-03 02:06:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:06:24,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:06:24,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:06:24,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:06:24,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:06:24,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 02:06:48,033 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 318 324) no Hoare annotation was computed. [2022-11-03 02:06:48,034 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 318 324) the Hoare annotation is: true [2022-11-03 02:06:48,034 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 119 130) the Hoare annotation is: (let ((.cse2 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0)) (.cse4 (= 1 ~systemActive~0))) (let ((.cse0 (not (= |old(~methaneLevelCritical~0)| ~systemActive~0))) (.cse1 (not .cse4)) (.cse3 (and .cse2 .cse4))) (and (or .cse0 .cse1 (not (< ~waterLevel~0 2)) .cse2) (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse3) (or (not (= |old(~methaneLevelCritical~0)| 0)) .cse1 .cse3 (not (< ~waterLevel~0 3)))))) [2022-11-03 02:06:48,034 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 119 130) no Hoare annotation was computed. [2022-11-03 02:06:48,035 INFO L895 garLoopResultBuilder]: At program point L366(line 366) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= |old(~pumpRunning~0)| 0)) (let ((.cse3 (= ~pumpRunning~0 0)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0))) (or (and .cse3 .cse4) (and (not .cse3) (let ((.cse5 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse5) .cse4) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse5)))))))) (.cse2 (not (< |old(~waterLevel~0)| 3)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2) (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 ~systemActive~0)) .cse2))) [2022-11-03 02:06:48,035 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 79) no Hoare annotation was computed. [2022-11-03 02:06:48,035 INFO L895 garLoopResultBuilder]: At program point L358(line 358) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= |old(~pumpRunning~0)| 0)) (let ((.cse3 (= ~pumpRunning~0 0)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0))) (or (and .cse3 .cse4) (and (not .cse3) (let ((.cse5 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse5) .cse4) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse5)))))))) (.cse2 (not (< |old(~waterLevel~0)| 3)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2) (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 ~systemActive~0)) .cse2))) [2022-11-03 02:06:48,035 INFO L899 garLoopResultBuilder]: For program point L358-1(line 358) no Hoare annotation was computed. [2022-11-03 02:06:48,036 INFO L895 garLoopResultBuilder]: At program point L69(lines 69 82) the Hoare annotation is: (let ((.cse5 (not (= 1 ~systemActive~0))) (.cse8 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse7 (= ~pumpRunning~0 0)) (.cse6 (not (= ~methaneLevelCritical~0 0))) (.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (= ~methaneLevelCritical~0 |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1|)) (.cse3 (<= |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1| 1)) (.cse4 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse10 (= ~waterLevel~0 1)) (.cse9 (not (= |old(~waterLevel~0)| 2)))) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4) .cse5 (not (< |old(~waterLevel~0)| 2)) .cse6 (and .cse7 .cse2 .cse3 .cse4)) (or (not (<= |old(~waterLevel~0)| 1)) .cse1 .cse5 .cse6 .cse8) (or .cse5 (not (= ~methaneLevelCritical~0 ~systemActive~0)) (not (< |old(~waterLevel~0)| 3))) (or .cse5 .cse6 (not (= |old(~pumpRunning~0)| 1)) .cse9 .cse10) (or .cse5 (and .cse2 .cse8 (= ~pumpRunning~0 1)) (and .cse1 .cse7 .cse2 .cse3 .cse4 .cse10) .cse6 (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse10) .cse9))) [2022-11-03 02:06:48,036 INFO L895 garLoopResultBuilder]: At program point L69-1(lines 54 86) the Hoare annotation is: (let ((.cse14 (= 1 ~systemActive~0))) (let ((.cse13 (<= ~waterLevel~0 1)) (.cse10 (not (< |old(~waterLevel~0)| 2))) (.cse8 (<= |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1| 1)) (.cse11 (not (= ~methaneLevelCritical~0 0))) (.cse1 (not (= |old(~pumpRunning~0)| 1))) (.cse0 (not .cse14)) (.cse5 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse9 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse2 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse6 (not (= |old(~pumpRunning~0)| 0))) (.cse12 (= ~pumpRunning~0 0)) (.cse4 (= ~waterLevel~0 1)) (.cse3 (not (= |old(~waterLevel~0)| 2))) (.cse7 (= ~methaneLevelCritical~0 |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1|)) (.cse15 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or (and .cse5 .cse6 .cse7 .cse8 .cse9) .cse0 .cse10 .cse11 (and .cse5 .cse12 .cse13 .cse7 .cse14 .cse8 .cse15) (and .cse6 .cse12 .cse7 .cse8 .cse9)) (or (and .cse5 .cse6 .cse7 .cse9) (and .cse5 .cse12 .cse13 .cse7 .cse14 .cse15) .cse0 .cse10 .cse2 (and .cse6 .cse12 .cse7 .cse9)) (or .cse0 (and .cse7 .cse15 (= ~pumpRunning~0 1)) .cse11 (and .cse5 .cse6 .cse7 .cse8 .cse9 .cse4) (and .cse6 .cse12 .cse7 .cse8 .cse4) .cse3) (or .cse0 .cse11 .cse1 (< ~waterLevel~0 2) (not (< |old(~waterLevel~0)| 3))) (or .cse0 (and .cse5 .cse6 .cse7 .cse9 .cse4) .cse2 (and .cse6 .cse12 .cse7 .cse4) .cse3 (and .cse7 .cse15))))) [2022-11-03 02:06:48,037 INFO L895 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: (let ((.cse6 (not (= ~methaneLevelCritical~0 0))) (.cse12 (= 1 ~systemActive~0)) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse14 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse15 (not (= |old(~pumpRunning~0)| 0))) (.cse13 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (let ((.cse5 (and .cse14 .cse15 .cse13)) (.cse8 (and .cse15 (= ~pumpRunning~0 0) .cse13)) (.cse9 (and .cse14 (<= ~waterLevel~0 1) .cse12 .cse3)) (.cse7 (and (or .cse6 (= ~pumpRunning~0 1)) (<= 2 ~waterLevel~0) .cse12 .cse13)) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse4 (= ~waterLevel~0 1)) (.cse0 (not .cse12)) (.cse11 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse10 (not (< |old(~waterLevel~0)| 3)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse0 .cse6 .cse7 .cse8 .cse9 .cse10) (or .cse5 .cse0 .cse7 .cse1 .cse8 .cse9 .cse10) (or .cse0 .cse6 .cse11 .cse2 .cse4) (or .cse0 .cse6 .cse7 .cse2 .cse4) (or .cse0 .cse11 .cse1 (< ~waterLevel~0 2) .cse10)))) [2022-11-03 02:06:48,037 INFO L899 garLoopResultBuilder]: For program point L61-1(line 61) no Hoare annotation was computed. [2022-11-03 02:06:48,037 INFO L895 garLoopResultBuilder]: At program point L371(line 371) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (= ~pumpRunning~0 0)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse6 (= 1 ~systemActive~0))) (let ((.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse0 (not .cse6)) (.cse5 (and .cse2 .cse3 .cse6 .cse4))) (and (or .cse0 (not (< |old(~waterLevel~0)| 2)) .cse1 (and .cse2 .cse3 .cse4)) (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 2)) .cse5) (or .cse0 (not (= ~methaneLevelCritical~0 ~systemActive~0)) .cse5 (not (< |old(~waterLevel~0)| 3)))))) [2022-11-03 02:06:48,038 INFO L895 garLoopResultBuilder]: At program point L371-1(lines 352 376) the Hoare annotation is: (let ((.cse6 (not (= ~methaneLevelCritical~0 0))) (.cse12 (= 1 ~systemActive~0)) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse14 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse15 (not (= |old(~pumpRunning~0)| 0))) (.cse13 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (let ((.cse5 (and .cse14 .cse15 .cse13)) (.cse8 (and .cse15 (= ~pumpRunning~0 0) .cse13)) (.cse9 (and .cse14 (<= ~waterLevel~0 1) .cse12 .cse3)) (.cse7 (and (or .cse6 (= ~pumpRunning~0 1)) (<= 2 ~waterLevel~0) .cse12 .cse13)) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse4 (= ~waterLevel~0 1)) (.cse0 (not .cse12)) (.cse11 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse10 (not (< |old(~waterLevel~0)| 3)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse0 .cse6 .cse7 .cse8 .cse9 .cse10) (or .cse5 .cse0 .cse7 .cse1 .cse8 .cse9 .cse10) (or .cse0 .cse6 .cse11 .cse2 .cse4) (or .cse0 .cse6 .cse7 .cse2 .cse4) (or .cse0 .cse11 .cse1 (< ~waterLevel~0 2) .cse10)))) [2022-11-03 02:06:48,038 INFO L899 garLoopResultBuilder]: For program point L305-1(lines 305 311) no Hoare annotation was computed. [2022-11-03 02:06:48,038 INFO L895 garLoopResultBuilder]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (< |old(~waterLevel~0)| 3)))) (and (or .cse0 (not (= ~methaneLevelCritical~0 ~systemActive~0)) .cse1) (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1))) [2022-11-03 02:06:48,038 INFO L899 garLoopResultBuilder]: For program point L298-1(lines 297 316) no Hoare annotation was computed. [2022-11-03 02:06:48,039 INFO L895 garLoopResultBuilder]: At program point L360(lines 360 368) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= |old(~pumpRunning~0)| 0)) (let ((.cse3 (= ~pumpRunning~0 0)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0))) (or (and .cse3 .cse4) (and (not .cse3) (let ((.cse5 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse5) .cse4) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse5)))))))) (.cse2 (not (< |old(~waterLevel~0)| 3)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2) (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 ~systemActive~0)) .cse2))) [2022-11-03 02:06:48,039 INFO L899 garLoopResultBuilder]: For program point L356(lines 356 373) no Hoare annotation was computed. [2022-11-03 02:06:48,039 INFO L895 garLoopResultBuilder]: At program point L63(lines 63 83) the Hoare annotation is: (let ((.cse12 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse14 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (= ~pumpRunning~0 0)) (.cse17 (= ~methaneLevelCritical~0 0)) (.cse13 (= ~methaneLevelCritical~0 |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1|)) (.cse18 (= 1 ~systemActive~0)) (.cse16 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse19 (< ~waterLevel~0 2))) (let ((.cse8 (not (= |old(~pumpRunning~0)| 1))) (.cse0 (and .cse14 .cse5 .cse17 .cse13 .cse18 .cse16 .cse19)) (.cse6 (and .cse4 .cse14 .cse17 .cse13 .cse18 .cse16 .cse19)) (.cse2 (<= 2 ~waterLevel~0)) (.cse9 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse7 (not (< |old(~waterLevel~0)| 3))) (.cse1 (not .cse18)) (.cse3 (not .cse17)) (.cse15 (and (= 2 ~waterLevel~0) .cse17 .cse13 .cse18 .cse12 (= ~pumpRunning~0 1))) (.cse10 (not (= |old(~waterLevel~0)| 2))) (.cse11 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 .cse2 .cse3 (and .cse4 .cse5) .cse6 .cse7) (or .cse1 .cse8 .cse9 .cse10 .cse11) (or .cse1 .cse9 .cse10 .cse12 .cse11) (or .cse1 .cse3 .cse8 .cse10 .cse11) (or .cse0 .cse1 (not (< |old(~waterLevel~0)| 2)) .cse3 .cse6 (and .cse13 .cse12)) (or .cse14 .cse1 .cse3 .cse15 .cse10) (or (and .cse4 .cse14 .cse13 .cse16) .cse1 (and .cse5 .cse13 .cse12) (and .cse2 .cse13 .cse12) .cse9 (and .cse14 .cse5 .cse13 .cse16) .cse7) (or .cse1 .cse3 .cse15 .cse10 .cse11)))) [2022-11-03 02:06:48,040 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 294 317) the Hoare annotation is: (let ((.cse7 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse9 (= 1 ~systemActive~0)) (.cse8 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse5 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse6 (and .cse7 .cse9 .cse8)) (.cse3 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not .cse9)) (.cse4 (not (< |old(~waterLevel~0)| 2))) (.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse2 (and .cse7 .cse8))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse4 .cse5 .cse6) (or .cse0 .cse5 .cse6 .cse3) (or .cse0 .cse4 .cse1 .cse2)))) [2022-11-03 02:06:48,040 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 294 317) no Hoare annotation was computed. [2022-11-03 02:06:48,040 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 590) no Hoare annotation was computed. [2022-11-03 02:06:48,040 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 189 218) no Hoare annotation was computed. [2022-11-03 02:06:48,040 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 189 218) the Hoare annotation is: true [2022-11-03 02:06:48,041 INFO L902 garLoopResultBuilder]: At program point L214(lines 189 218) the Hoare annotation is: true [2022-11-03 02:06:48,041 INFO L899 garLoopResultBuilder]: For program point L210(line 210) no Hoare annotation was computed. [2022-11-03 02:06:48,041 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 207) no Hoare annotation was computed. [2022-11-03 02:06:48,041 INFO L902 garLoopResultBuilder]: At program point L203-1(lines 203 207) the Hoare annotation is: true [2022-11-03 02:06:48,041 INFO L902 garLoopResultBuilder]: At program point L199-2(lines 199 213) the Hoare annotation is: true [2022-11-03 02:06:48,041 INFO L902 garLoopResultBuilder]: At program point L195(line 195) the Hoare annotation is: true [2022-11-03 02:06:48,041 INFO L899 garLoopResultBuilder]: For program point L195-1(line 195) no Hoare annotation was computed. [2022-11-03 02:06:48,042 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 131 139) the Hoare annotation is: true [2022-11-03 02:06:48,042 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 131 139) no Hoare annotation was computed. [2022-11-03 02:06:48,042 INFO L895 garLoopResultBuilder]: At program point L539(lines 496 541) the Hoare annotation is: (let ((.cse0 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (< ~waterLevel~0 3))) (or (and .cse0 .cse1 .cse2 (< ~waterLevel~0 2)) (and (= ~methaneLevelCritical~0 ~systemActive~0) .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 1)))) [2022-11-03 02:06:48,042 INFO L899 garLoopResultBuilder]: For program point L506(lines 506 512) no Hoare annotation was computed. [2022-11-03 02:06:48,042 INFO L899 garLoopResultBuilder]: For program point L506-1(lines 506 512) no Hoare annotation was computed. [2022-11-03 02:06:48,043 INFO L895 garLoopResultBuilder]: At program point L275(lines 275 282) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 1)) [2022-11-03 02:06:48,043 INFO L902 garLoopResultBuilder]: At program point L275-2(lines 275 282) the Hoare annotation is: true [2022-11-03 02:06:48,043 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-03 02:06:48,043 INFO L895 garLoopResultBuilder]: At program point L532-2(lines 526 537) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (< ~waterLevel~0 3))) (or (and (= ~methaneLevelCritical~0 ~systemActive~0) .cse0 .cse1 .cse2) (and (= ~methaneLevelCritical~0 0) .cse0 .cse1 .cse2))) [2022-11-03 02:06:48,043 INFO L899 garLoopResultBuilder]: For program point L516(lines 516 522) no Hoare annotation was computed. [2022-11-03 02:06:48,043 INFO L899 garLoopResultBuilder]: For program point L516-1(lines 516 522) no Hoare annotation was computed. [2022-11-03 02:06:48,044 INFO L902 garLoopResultBuilder]: At program point L545(lines 486 549) the Hoare annotation is: true [2022-11-03 02:06:48,044 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 02:06:48,044 INFO L895 garLoopResultBuilder]: At program point L508(line 508) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (< ~waterLevel~0 3))) (or (and (= ~methaneLevelCritical~0 ~systemActive~0) .cse0 .cse1 .cse2) (and (= ~methaneLevelCritical~0 0) .cse0 .cse1 .cse2))) [2022-11-03 02:06:48,044 INFO L895 garLoopResultBuilder]: At program point L542(lines 495 543) the Hoare annotation is: false [2022-11-03 02:06:48,044 INFO L899 garLoopResultBuilder]: For program point L497(lines 496 541) no Hoare annotation was computed. [2022-11-03 02:06:48,044 INFO L895 garLoopResultBuilder]: At program point L518(line 518) the Hoare annotation is: (let ((.cse0 (= ~methaneLevelCritical~0 0)) (.cse3 (< ~waterLevel~0 2)) (.cse5 (= ~methaneLevelCritical~0 ~systemActive~0)) (.cse4 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse1 .cse2) (and .cse5 .cse1 .cse2 .cse3) (and .cse5 .cse4 .cse1 .cse2))) [2022-11-03 02:06:48,045 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 107 118) no Hoare annotation was computed. [2022-11-03 02:06:48,045 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 107 118) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 (not (< |old(~waterLevel~0)| 3))) (or .cse0 (not (< |old(~waterLevel~0)| 2)) .cse2 .cse1) (or .cse0 .cse2 (not (= |old(~waterLevel~0)| 2)) .cse1))) [2022-11-03 02:06:48,045 INFO L895 garLoopResultBuilder]: At program point L345(line 345) the Hoare annotation is: (let ((.cse5 (= |old(~pumpRunning~0)| 0))) (let ((.cse4 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (not (< ~waterLevel~0 2))) (.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse0 (not .cse5)) (.cse1 (not (= 1 ~systemActive~0))) (.cse6 (not (= ~methaneLevelCritical~0 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse1 .cse2 .cse5 .cse6) (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse3) (or .cse4 .cse1 .cse2 .cse5 .cse3) (or .cse0 .cse1 .cse6 (not (< ~waterLevel~0 3)))))) [2022-11-03 02:06:48,045 INFO L899 garLoopResultBuilder]: For program point L345-1(lines 326 350) no Hoare annotation was computed. [2022-11-03 02:06:48,046 INFO L895 garLoopResultBuilder]: At program point L340(line 340) the Hoare annotation is: (let ((.cse6 (= |old(~pumpRunning~0)| 0)) (.cse5 (<= ~waterLevel~0 1)) (.cse7 (= 1 ~systemActive~0))) (let ((.cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~pumpRunning~0 0) .cse5 .cse7 (= |processEnvironment__wrappee__methaneQuery_~tmp~2#1| 0))) (.cse2 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse3 (not .cse6)) (.cse1 (not .cse7)) (.cse4 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 (and .cse3 (< 0 ~waterLevel~0)) (not (< ~waterLevel~0 3))) (or .cse0 .cse1 .cse4 (not .cse5)) (or (not (= ~waterLevel~0 1)) .cse1 .cse6 .cse2) (or .cse3 .cse1 (not (= 2 ~waterLevel~0)) .cse4)))) [2022-11-03 02:06:48,046 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 326 350) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse7 (= 1 ~systemActive~0))) (let ((.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse6 (and .cse0 (= ~pumpRunning~0 0) .cse7)) (.cse1 (not .cse7)) (.cse2 (not (< ~waterLevel~0 2))) (.cse5 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse1 .cse5 .cse6 (not (< ~waterLevel~0 3))) (or .cse4 .cse1 (not (= 2 ~waterLevel~0)) .cse3 .cse6) (or .cse0 .cse1 .cse2 .cse5)))) [2022-11-03 02:06:48,046 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 342) no Hoare annotation was computed. [2022-11-03 02:06:48,046 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 326 350) no Hoare annotation was computed. [2022-11-03 02:06:48,046 INFO L895 garLoopResultBuilder]: At program point L330(lines 330 347) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse7 (= 1 ~systemActive~0))) (let ((.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse6 (and .cse0 (= ~pumpRunning~0 0) .cse7)) (.cse1 (not .cse7)) (.cse2 (not (< ~waterLevel~0 2))) (.cse5 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse1 .cse5 .cse6 (not (< ~waterLevel~0 3))) (or .cse4 .cse1 (not (= 2 ~waterLevel~0)) .cse3 .cse6) (or .cse0 .cse1 .cse2 .cse5)))) [2022-11-03 02:06:48,047 INFO L895 garLoopResultBuilder]: At program point L390(line 390) the Hoare annotation is: (let ((.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__methaneQuery_~tmp~2#1| 1))) (.cse0 (not (= 1 ~systemActive~0))) (.cse4 (not (= ~methaneLevelCritical~0 ~systemActive~0)))) (and (or .cse0 (not (< ~waterLevel~0 2)) .cse1) (or .cse2 .cse0 .cse3 .cse1 (not (< ~waterLevel~0 3))) (or .cse2 .cse0 (not (= 2 ~waterLevel~0)) .cse3 .cse4) (or .cse0 .cse4 (not (<= ~waterLevel~0 1))))) [2022-11-03 02:06:48,047 INFO L895 garLoopResultBuilder]: At program point L390-1(line 390) the Hoare annotation is: (let ((.cse7 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse7)) (.cse2 (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0) (= |processEnvironment__wrappee__methaneQuery_~tmp~2#1| 1) (= |processEnvironment__wrappee__methaneQuery_activatePump_#t~ret15#1| ~methaneLevelCritical~0))) (.cse4 (not (< ~waterLevel~0 3))) (.cse5 (not (= ~methaneLevelCritical~0 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse6 (not (< ~waterLevel~0 2))) (.cse3 (not (= ~methaneLevelCritical~0 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse1 .cse2 .cse5 .cse4) (or .cse1 .cse6 .cse7 .cse5) (or .cse1 .cse6 .cse7 .cse3)))) [2022-11-03 02:06:48,047 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 410 420) the Hoare annotation is: true [2022-11-03 02:06:48,047 INFO L902 garLoopResultBuilder]: At program point L415(line 415) the Hoare annotation is: true [2022-11-03 02:06:48,047 INFO L899 garLoopResultBuilder]: For program point L415-1(line 415) no Hoare annotation was computed. [2022-11-03 02:06:48,048 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 410 420) no Hoare annotation was computed. [2022-11-03 02:06:48,051 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:48,053 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:06:48,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:06:48 BoogieIcfgContainer [2022-11-03 02:06:48,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:06:48,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:06:48,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:06:48,106 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:06:48,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:52" (3/4) ... [2022-11-03 02:06:48,110 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:06:48,115 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-03 02:06:48,115 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-03 02:06:48,115 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-03 02:06:48,115 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-03 02:06:48,116 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-03 02:06:48,116 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-03 02:06:48,116 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-03 02:06:48,116 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-03 02:06:48,123 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 74 nodes and edges [2022-11-03 02:06:48,124 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-11-03 02:06:48,124 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-03 02:06:48,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-03 02:06:48,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 02:06:48,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:06:48,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:06:48,150 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) && (((!(1 == systemActive) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == systemActive)) || ((pumpRunning == \old(pumpRunning) && 1 == systemActive) && \old(waterLevel) == waterLevel))) && (((!(1 == systemActive) || !(methaneLevelCritical == systemActive)) || ((pumpRunning == \old(pumpRunning) && 1 == systemActive) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2))) && (((!(1 == systemActive) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == 0)) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) [2022-11-03 02:06:48,151 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(1 == systemActive) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) == 2)) || \old(waterLevel) == waterLevel) || waterLevel == 1) && ((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((!(methaneLevelCritical == 0) || pumpRunning == 1) && 2 <= waterLevel) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= \old(waterLevel))) || (((pumpRunning == \old(pumpRunning) && waterLevel <= 1) && 1 == systemActive) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) < 3))) && ((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || ((((!(methaneLevelCritical == 0) || pumpRunning == 1) && 2 <= waterLevel) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || !(methaneLevelCritical == systemActive)) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= \old(waterLevel))) || (((pumpRunning == \old(pumpRunning) && waterLevel <= 1) && 1 == systemActive) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) < 3))) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || ((((!(methaneLevelCritical == 0) || pumpRunning == 1) && 2 <= waterLevel) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == systemActive)) || waterLevel < 2) || !(\old(waterLevel) < 3)) [2022-11-03 02:06:48,151 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(waterLevel < 2)) || !(methaneLevelCritical == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive)) || !(waterLevel < 3))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 == waterLevel)) || !(methaneLevelCritical == systemActive)) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive))) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(waterLevel < 2)) || !(methaneLevelCritical == 0)) [2022-11-03 02:06:48,152 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))))) || !(methaneLevelCritical == 0)) || !(\old(waterLevel) < 3)) && (((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))))) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) < 3)) [2022-11-03 02:06:48,152 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && waterLevel < 2) || !(1 == systemActive)) || 2 <= waterLevel) || !(methaneLevelCritical == 0)) || (pumpRunning == \old(pumpRunning) && pumpRunning == 0)) || ((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && waterLevel < 2)) || !(\old(waterLevel) < 3)) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(1 == systemActive) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) == 2)) || \old(waterLevel) == waterLevel) || waterLevel == 1)) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && (((((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && waterLevel < 2) || !(1 == systemActive)) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == 0)) || ((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && waterLevel < 2)) || (methaneLevelCritical == tmp && \old(waterLevel) == waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (((((2 == waterLevel && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2))) && (((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || ((pumpRunning == 0 && methaneLevelCritical == tmp) && \old(waterLevel) == waterLevel)) || ((2 <= waterLevel && methaneLevelCritical == tmp) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && waterLevel <= \old(waterLevel))) || !(\old(waterLevel) < 3))) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (((((2 == waterLevel && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || waterLevel == 1) [2022-11-03 02:06:48,152 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) == 2)) || waterLevel == 1) && (((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == 0)) || ((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && methaneLevelCritical == tmp) && 1 == systemActive) && tmp___0 <= 1) && \old(waterLevel) == waterLevel)) || ((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)))) && ((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && waterLevel <= \old(waterLevel)) || (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && methaneLevelCritical == tmp) && 1 == systemActive) && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && waterLevel <= \old(waterLevel)))) && (((((!(1 == systemActive) || ((methaneLevelCritical == tmp && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)) && waterLevel == 1)) || ((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel == 1)) || !(\old(waterLevel) == 2))) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || waterLevel < 2) || !(\old(waterLevel) < 3))) && (((((!(1 == systemActive) || ((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && waterLevel <= \old(waterLevel)) && waterLevel == 1)) || !(methaneLevelCritical == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && waterLevel == 1)) || !(\old(waterLevel) == 2)) || (methaneLevelCritical == tmp && \old(waterLevel) == waterLevel)) [2022-11-03 02:06:48,153 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (((pumpRunning == 0 && 2 <= waterLevel) && tmp == 1) && aux-isMethaneAlarm()-aux == methaneLevelCritical)) || !(methaneLevelCritical == systemActive)) || !(waterLevel < 3)) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (((pumpRunning == 0 && 2 <= waterLevel) && tmp == 1) && aux-isMethaneAlarm()-aux == methaneLevelCritical)) || !(methaneLevelCritical == 0)) || !(waterLevel < 3))) && (((!(1 == systemActive) || !(waterLevel < 2)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0))) && (((!(1 == systemActive) || !(waterLevel < 2)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == systemActive)) [2022-11-03 02:06:48,153 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == 0)) || (((pumpRunning == 0 && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || \old(waterLevel) == waterLevel)) && ((!(1 == systemActive) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) < 3))) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && (((((!(1 == systemActive) || ((methaneLevelCritical == tmp && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || (((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)) && waterLevel == 1)) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)) && waterLevel == 1)) || !(\old(waterLevel) == 2)) [2022-11-03 02:06:48,154 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(1 == systemActive) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) < 3)) && ((!(1 == systemActive) || !(methaneLevelCritical == 0)) || !(\old(waterLevel) < 3)) [2022-11-03 02:06:48,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:06:48,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:06:48,177 INFO L158 Benchmark]: Toolchain (without parser) took 177369.41ms. Allocated memory was 94.4MB in the beginning and 836.8MB in the end (delta: 742.4MB). Free memory was 62.7MB in the beginning and 717.6MB in the end (delta: -654.9MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. [2022-11-03 02:06:48,177 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:06:48,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 620.80ms. Allocated memory is still 94.4MB. Free memory was 62.5MB in the beginning and 61.4MB in the end (delta: 1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:06:48,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.56ms. Allocated memory is still 94.4MB. Free memory was 61.4MB in the beginning and 58.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:06:48,178 INFO L158 Benchmark]: Boogie Preprocessor took 27.96ms. Allocated memory is still 94.4MB. Free memory was 58.9MB in the beginning and 57.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:06:48,178 INFO L158 Benchmark]: RCFGBuilder took 799.08ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 57.1MB in the beginning and 77.1MB in the end (delta: -20.0MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2022-11-03 02:06:48,179 INFO L158 Benchmark]: TraceAbstraction took 175780.82ms. Allocated memory was 117.4MB in the beginning and 836.8MB in the end (delta: 719.3MB). Free memory was 76.7MB in the beginning and 722.8MB in the end (delta: -646.1MB). Peak memory consumption was 505.3MB. Max. memory is 16.1GB. [2022-11-03 02:06:48,179 INFO L158 Benchmark]: Witness Printer took 70.24ms. Allocated memory is still 836.8MB. Free memory was 722.8MB in the beginning and 717.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 02:06:48,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 620.80ms. Allocated memory is still 94.4MB. Free memory was 62.5MB in the beginning and 61.4MB in the end (delta: 1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.56ms. Allocated memory is still 94.4MB. Free memory was 61.4MB in the beginning and 58.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.96ms. Allocated memory is still 94.4MB. Free memory was 58.9MB in the beginning and 57.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 799.08ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 57.1MB in the beginning and 77.1MB in the end (delta: -20.0MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * TraceAbstraction took 175780.82ms. Allocated memory was 117.4MB in the beginning and 836.8MB in the end (delta: 719.3MB). Free memory was 76.7MB in the beginning and 722.8MB in the end (delta: -646.1MB). Peak memory consumption was 505.3MB. Max. memory is 16.1GB. * Witness Printer took 70.24ms. Allocated memory is still 836.8MB. Free memory was 722.8MB in the beginning and 717.6MB 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 - PositiveResult [Line: 590]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 175.7s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 23.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3430 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3398 mSDsluCounter, 3988 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3835 mSDsCounter, 2558 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9138 IncrementalHoareTripleChecker+Invalid, 11696 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2558 mSolverCounterUnsat, 919 mSDtfsCounter, 9138 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 964 GetRequests, 524 SyntacticMatches, 15 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17118 ImplicationChecksByTransitivity, 112.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2131occurred in iteration=10, InterpolantAutomatonStates: 282, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 705 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 4752 PreInvPairs, 5917 NumberOfFragments, 2539 HoareAnnotationTreeSize, 4752 FomulaSimplifications, 57258 FormulaSimplificationTreeSizeReduction, 4.9s HoareSimplificationTime, 37 FomulaSimplificationsInter, 239816 FormulaSimplificationTreeSizeReductionInter, 18.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 684 NumberOfCodeBlocks, 674 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 845 ConstructedInterpolants, 0 QuantifiedInterpolants, 2501 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1673 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 186/253 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((((((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) == 2)) || waterLevel == 1) && (((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == 0)) || ((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && methaneLevelCritical == tmp) && 1 == systemActive) && tmp___0 <= 1) && \old(waterLevel) == waterLevel)) || ((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)))) && ((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && waterLevel <= \old(waterLevel)) || (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && methaneLevelCritical == tmp) && 1 == systemActive) && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && waterLevel <= \old(waterLevel)))) && (((((!(1 == systemActive) || ((methaneLevelCritical == tmp && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)) && waterLevel == 1)) || ((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel == 1)) || !(\old(waterLevel) == 2))) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || waterLevel < 2) || !(\old(waterLevel) < 3))) && (((((!(1 == systemActive) || ((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && waterLevel <= \old(waterLevel)) && waterLevel == 1)) || !(methaneLevelCritical == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && waterLevel == 1)) || !(\old(waterLevel) == 2)) || (methaneLevelCritical == tmp && \old(waterLevel) == waterLevel)) - InvariantResult [Line: 330]: Loop Invariant Derived loop invariant: (((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(waterLevel < 2)) || !(methaneLevelCritical == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive)) || !(waterLevel < 3))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 == waterLevel)) || !(methaneLevelCritical == systemActive)) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive))) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(waterLevel < 2)) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 496]: Loop Invariant Derived loop invariant: ((((methaneLevelCritical == 0 && 1 == systemActive) && splverifierCounter == 0) && waterLevel < 2) || (((methaneLevelCritical == systemActive && 1 == systemActive) && splverifierCounter == 0) && waterLevel < 3)) || ((((methaneLevelCritical == 0 && 1 == systemActive) && splverifierCounter == 0) && waterLevel < 3) && pumpRunning == 1) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: ((((((((((((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && waterLevel < 2) || !(1 == systemActive)) || 2 <= waterLevel) || !(methaneLevelCritical == 0)) || (pumpRunning == \old(pumpRunning) && pumpRunning == 0)) || ((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && waterLevel < 2)) || !(\old(waterLevel) < 3)) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(1 == systemActive) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) == 2)) || \old(waterLevel) == waterLevel) || waterLevel == 1)) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && (((((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && waterLevel < 2) || !(1 == systemActive)) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == 0)) || ((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && waterLevel < 2)) || (methaneLevelCritical == tmp && \old(waterLevel) == waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (((((2 == waterLevel && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2))) && (((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || ((pumpRunning == 0 && methaneLevelCritical == tmp) && \old(waterLevel) == waterLevel)) || ((2 <= waterLevel && methaneLevelCritical == tmp) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && waterLevel <= \old(waterLevel))) || !(\old(waterLevel) < 3))) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (((((2 == waterLevel && methaneLevelCritical == 0) && methaneLevelCritical == tmp) && 1 == systemActive) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || waterLevel == 1) - InvariantResult [Line: 69]: Loop Invariant Derived loop invariant: (((((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == 0)) || (((pumpRunning == 0 && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || \old(waterLevel) == waterLevel)) && ((!(1 == systemActive) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) < 3))) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && (((((!(1 == systemActive) || ((methaneLevelCritical == tmp && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || (((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)) && waterLevel == 1)) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methaneLevelCritical == tmp) && tmp___0 <= 1) && waterLevel <= \old(waterLevel)) && waterLevel == 1)) || !(\old(waterLevel) == 2)) - InvariantResult [Line: 486]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 294]: Loop Invariant Derived loop invariant: (((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) && (((!(1 == systemActive) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == systemActive)) || ((pumpRunning == \old(pumpRunning) && 1 == systemActive) && \old(waterLevel) == waterLevel))) && (((!(1 == systemActive) || !(methaneLevelCritical == systemActive)) || ((pumpRunning == \old(pumpRunning) && 1 == systemActive) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2))) && (((!(1 == systemActive) || !(\old(waterLevel) < 2)) || !(methaneLevelCritical == 0)) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) - InvariantResult [Line: 495]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 189]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 275]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && methaneLevelCritical == 0) && 1 == systemActive) && waterLevel == 1 - InvariantResult [Line: 352]: Loop Invariant Derived loop invariant: ((((((((!(1 == systemActive) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) == 2)) || \old(waterLevel) == waterLevel) || waterLevel == 1) && ((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((!(methaneLevelCritical == 0) || pumpRunning == 1) && 2 <= waterLevel) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= \old(waterLevel))) || (((pumpRunning == \old(pumpRunning) && waterLevel <= 1) && 1 == systemActive) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) < 3))) && ((((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || ((((!(methaneLevelCritical == 0) || pumpRunning == 1) && 2 <= waterLevel) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || !(methaneLevelCritical == systemActive)) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= \old(waterLevel))) || (((pumpRunning == \old(pumpRunning) && waterLevel <= 1) && 1 == systemActive) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) < 3))) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || ((((!(methaneLevelCritical == 0) || pumpRunning == 1) && 2 <= waterLevel) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == systemActive)) || waterLevel < 2) || !(\old(waterLevel) < 3)) - InvariantResult [Line: 590]: Loop Invariant Derived loop invariant: ((!(1 == systemActive) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) < 3)) && ((!(1 == systemActive) || !(methaneLevelCritical == 0)) || !(\old(waterLevel) < 3)) - InvariantResult [Line: 275]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 360]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))))) || !(methaneLevelCritical == 0)) || !(\old(waterLevel) < 3)) && (((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))))) || !(methaneLevelCritical == systemActive)) || !(\old(waterLevel) < 3)) - InvariantResult [Line: 390]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (((pumpRunning == 0 && 2 <= waterLevel) && tmp == 1) && aux-isMethaneAlarm()-aux == methaneLevelCritical)) || !(methaneLevelCritical == systemActive)) || !(waterLevel < 3)) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (((pumpRunning == 0 && 2 <= waterLevel) && tmp == 1) && aux-isMethaneAlarm()-aux == methaneLevelCritical)) || !(methaneLevelCritical == 0)) || !(waterLevel < 3))) && (((!(1 == systemActive) || !(waterLevel < 2)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0))) && (((!(1 == systemActive) || !(waterLevel < 2)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == systemActive)) RESULT: Ultimate proved your program to be correct! [2022-11-03 02:06:48,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bb011f-a33f-4475-a394-41b9056f2425/bin/utaipan-7li7fVZpFI/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 Result: TRUE