./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5780768f89256c506186805750dd5ec09f07e7c3b9baffd6ca5edbcb4a88d3de --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:42:02,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:42:02,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:42:02,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:42:02,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:42:02,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:42:02,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:42:02,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:42:02,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:42:02,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:42:02,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:42:02,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:42:02,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:42:02,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:42:02,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:42:02,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:42:02,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:42:02,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:42:02,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:42:02,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:42:02,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:42:02,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:42:02,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:42:02,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:42:02,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:42:02,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:42:02,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:42:02,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:42:02,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:42:02,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:42:02,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:42:02,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:42:02,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:42:02,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:42:02,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:42:02,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:42:02,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:42:02,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:42:02,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:42:02,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:42:02,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:42:02,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:42:02,395 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:42:02,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:42:02,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:42:02,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:42:02,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:42:02,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:42:02,404 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:42:02,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:42:02,405 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:42:02,405 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:42:02,406 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:42:02,406 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:42:02,406 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:42:02,406 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:42:02,407 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:42:02,407 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:42:02,407 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:42:02,407 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:42:02,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:42:02,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:42:02,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:42:02,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:42:02,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:42:02,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:42:02,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:42:02,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:42:02,411 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:42:02,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:42:02,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:42:02,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:42:02,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:42:02,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:42:02,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:42:02,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:42:02,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:42:02,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:42:02,413 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:42:02,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:42:02,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:42:02,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:42:02,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:42:02,414 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5780768f89256c506186805750dd5ec09f07e7c3b9baffd6ca5edbcb4a88d3de [2021-11-23 03:42:02,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:42:02,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:42:02,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:42:02,778 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:42:02,778 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:42:02,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c [2021-11-23 03:42:02,856 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/data/abf1dd0ed/83adfd9e910b42bea1a3627198445a98/FLAG1c88c61fb [2021-11-23 03:42:03,402 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:42:03,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c [2021-11-23 03:42:03,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/data/abf1dd0ed/83adfd9e910b42bea1a3627198445a98/FLAG1c88c61fb [2021-11-23 03:42:03,709 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/data/abf1dd0ed/83adfd9e910b42bea1a3627198445a98 [2021-11-23 03:42:03,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:42:03,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:42:03,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:42:03,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:42:03,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:42:03,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:42:03" (1/1) ... [2021-11-23 03:42:03,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157548a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:03, skipping insertion in model container [2021-11-23 03:42:03,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:42:03" (1/1) ... [2021-11-23 03:42:03,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:42:03,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:42:04,019 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_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c[7019,7032] [2021-11-23 03:42:04,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:42:04,146 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:42:04,177 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_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c[7019,7032] [2021-11-23 03:42:04,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:42:04,231 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:42:04,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04 WrapperNode [2021-11-23 03:42:04,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:42:04,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:42:04,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:42:04,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:42:04,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04" (1/1) ... [2021-11-23 03:42:04,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04" (1/1) ... [2021-11-23 03:42:04,285 INFO L137 Inliner]: procedures = 55, calls = 156, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 241 [2021-11-23 03:42:04,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:42:04,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:42:04,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:42:04,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:42:04,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04" (1/1) ... [2021-11-23 03:42:04,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04" (1/1) ... [2021-11-23 03:42:04,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04" (1/1) ... [2021-11-23 03:42:04,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04" (1/1) ... [2021-11-23 03:42:04,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04" (1/1) ... [2021-11-23 03:42:04,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04" (1/1) ... [2021-11-23 03:42:04,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04" (1/1) ... [2021-11-23 03:42:04,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:42:04,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:42:04,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:42:04,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:42:04,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04" (1/1) ... [2021-11-23 03:42:04,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:42:04,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:42:04,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:42:04,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:42:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:42:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 03:42:04,434 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 03:42:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 03:42:04,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 03:42:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 03:42:04,435 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 03:42:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 03:42:04,435 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 03:42:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 03:42:04,435 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 03:42:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-11-23 03:42:04,436 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-11-23 03:42:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-11-23 03:42:04,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-11-23 03:42:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:42:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 03:42:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 03:42:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:42:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:42:04,526 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:42:04,528 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:42:04,908 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:42:04,993 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:42:04,993 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:42:04,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:04 BoogieIcfgContainer [2021-11-23 03:42:04,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:42:04,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:42:04,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:42:05,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:42:05,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:42:03" (1/3) ... [2021-11-23 03:42:05,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606d0cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:05, skipping insertion in model container [2021-11-23 03:42:05,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:04" (2/3) ... [2021-11-23 03:42:05,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606d0cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:05, skipping insertion in model container [2021-11-23 03:42:05,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:04" (3/3) ... [2021-11-23 03:42:05,004 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product46.cil.c [2021-11-23 03:42:05,009 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:42:05,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:42:05,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:42:05,065 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:42:05,065 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:42:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 47 states have internal predecessors, (54), 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) [2021-11-23 03:42:05,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:42:05,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:05,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:05,100 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:05,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:05,107 INFO L85 PathProgramCache]: Analyzing trace with hash -939449567, now seen corresponding path program 1 times [2021-11-23 03:42:05,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:05,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557183920] [2021-11-23 03:42:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:05,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:05,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:05,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557183920] [2021-11-23 03:42:05,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557183920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:05,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:05,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:42:05,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053657002] [2021-11-23 03:42:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:05,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:42:05,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:05,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:42:05,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:42:05,394 INFO L87 Difference]: Start difference. First operand has 63 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 47 states have internal predecessors, (54), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:42:05,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:05,462 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2021-11-23 03:42:05,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:42:05,464 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-23 03:42:05,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:05,489 INFO L225 Difference]: With dead ends: 124 [2021-11-23 03:42:05,490 INFO L226 Difference]: Without dead ends: 58 [2021-11-23 03:42:05,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:42:05,501 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:05,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:42:05,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-23 03:42:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-23 03:42:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 43 states have internal predecessors, (46), 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) [2021-11-23 03:42:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2021-11-23 03:42:05,567 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 16 [2021-11-23 03:42:05,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:05,568 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2021-11-23 03:42:05,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:42:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2021-11-23 03:42:05,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:42:05,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:05,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:05,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:42:05,575 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:05,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:05,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1141998118, now seen corresponding path program 1 times [2021-11-23 03:42:05,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:05,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409720823] [2021-11-23 03:42:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:05,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:05,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:05,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409720823] [2021-11-23 03:42:05,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409720823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:05,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:05,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:42:05,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654552718] [2021-11-23 03:42:05,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:05,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:42:05,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:05,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:42:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:42:05,714 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:42:05,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:05,791 INFO L93 Difference]: Finished difference Result 93 states and 117 transitions. [2021-11-23 03:42:05,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:42:05,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-23 03:42:05,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:05,797 INFO L225 Difference]: With dead ends: 93 [2021-11-23 03:42:05,797 INFO L226 Difference]: Without dead ends: 50 [2021-11-23 03:42:05,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:42:05,804 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:05,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 87 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:42:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-23 03:42:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-23 03:42:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 38 states have internal predecessors, (40), 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) [2021-11-23 03:42:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2021-11-23 03:42:05,812 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 17 [2021-11-23 03:42:05,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:05,812 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2021-11-23 03:42:05,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:42:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2021-11-23 03:42:05,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:42:05,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:05,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:05,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:42:05,815 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:05,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:05,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1494301195, now seen corresponding path program 1 times [2021-11-23 03:42:05,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:05,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323503628] [2021-11-23 03:42:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:05,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:05,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:05,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323503628] [2021-11-23 03:42:05,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323503628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:05,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:05,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:42:05,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814312986] [2021-11-23 03:42:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:05,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:42:05,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:05,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:42:05,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:42:05,910 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:42:06,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:06,129 INFO L93 Difference]: Finished difference Result 144 states and 182 transitions. [2021-11-23 03:42:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:42:06,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-23 03:42:06,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:06,134 INFO L225 Difference]: With dead ends: 144 [2021-11-23 03:42:06,134 INFO L226 Difference]: Without dead ends: 96 [2021-11-23 03:42:06,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:42:06,146 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 43 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:06,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 248 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:42:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-23 03:42:06,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2021-11-23 03:42:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 57 states have (on average 1.280701754385965) internal successors, (73), 69 states have internal predecessors, (73), 21 states have call successors, (21), 13 states have call predecessors, (21), 13 states have return successors, (21), 17 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-23 03:42:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 115 transitions. [2021-11-23 03:42:06,182 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 115 transitions. Word has length 19 [2021-11-23 03:42:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:06,183 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 115 transitions. [2021-11-23 03:42:06,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:42:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 115 transitions. [2021-11-23 03:42:06,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:42:06,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:06,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:06,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:42:06,191 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1577692455, now seen corresponding path program 1 times [2021-11-23 03:42:06,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:06,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445209722] [2021-11-23 03:42:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:06,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:06,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:06,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445209722] [2021-11-23 03:42:06,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445209722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:06,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:06,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:42:06,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826739323] [2021-11-23 03:42:06,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:06,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:42:06,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:06,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:42:06,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:42:06,397 INFO L87 Difference]: Start difference. First operand 92 states and 115 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:42:07,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:07,026 INFO L93 Difference]: Finished difference Result 229 states and 290 transitions. [2021-11-23 03:42:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:42:07,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-11-23 03:42:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:07,032 INFO L225 Difference]: With dead ends: 229 [2021-11-23 03:42:07,033 INFO L226 Difference]: Without dead ends: 139 [2021-11-23 03:42:07,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:42:07,043 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 128 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:07,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 187 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:42:07,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-23 03:42:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 95. [2021-11-23 03:42:07,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 71 states have internal predecessors, (72), 22 states have call successors, (22), 14 states have call predecessors, (22), 14 states have return successors, (22), 18 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 03:42:07,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 116 transitions. [2021-11-23 03:42:07,070 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 116 transitions. Word has length 22 [2021-11-23 03:42:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:07,071 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 116 transitions. [2021-11-23 03:42:07,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:42:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 116 transitions. [2021-11-23 03:42:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 03:42:07,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:07,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:07,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:42:07,075 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:07,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2058418800, now seen corresponding path program 1 times [2021-11-23 03:42:07,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:07,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072534205] [2021-11-23 03:42:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:07,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:07,167 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:07,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072534205] [2021-11-23 03:42:07,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072534205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:07,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:07,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:42:07,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585393716] [2021-11-23 03:42:07,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:07,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:42:07,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:07,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:42:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:07,174 INFO L87 Difference]: Start difference. First operand 95 states and 116 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:42:07,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:07,368 INFO L93 Difference]: Finished difference Result 303 states and 366 transitions. [2021-11-23 03:42:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:42:07,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2021-11-23 03:42:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:07,381 INFO L225 Difference]: With dead ends: 303 [2021-11-23 03:42:07,381 INFO L226 Difference]: Without dead ends: 210 [2021-11-23 03:42:07,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:42:07,383 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 114 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:07,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 150 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:42:07,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-23 03:42:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 204. [2021-11-23 03:42:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 131 states have (on average 1.16793893129771) internal successors, (153), 144 states have internal predecessors, (153), 36 states have call successors, (36), 30 states have call predecessors, (36), 36 states have return successors, (46), 38 states have call predecessors, (46), 36 states have call successors, (46) [2021-11-23 03:42:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 235 transitions. [2021-11-23 03:42:07,433 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 235 transitions. Word has length 32 [2021-11-23 03:42:07,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:07,433 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 235 transitions. [2021-11-23 03:42:07,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:42:07,434 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 235 transitions. [2021-11-23 03:42:07,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 03:42:07,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:07,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:07,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:42:07,436 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:07,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:07,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2015616217, now seen corresponding path program 1 times [2021-11-23 03:42:07,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:07,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488433857] [2021-11-23 03:42:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:07,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:07,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:07,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488433857] [2021-11-23 03:42:07,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488433857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:07,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:07,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:42:07,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099513672] [2021-11-23 03:42:07,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:07,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:42:07,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:07,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:42:07,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:07,577 INFO L87 Difference]: Start difference. First operand 204 states and 235 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:42:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:07,776 INFO L93 Difference]: Finished difference Result 216 states and 247 transitions. [2021-11-23 03:42:07,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:42:07,777 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-11-23 03:42:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:07,781 INFO L225 Difference]: With dead ends: 216 [2021-11-23 03:42:07,781 INFO L226 Difference]: Without dead ends: 214 [2021-11-23 03:42:07,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:42:07,783 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 71 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:07,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 147 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:42:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-23 03:42:07,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 204. [2021-11-23 03:42:07,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 131 states have (on average 1.1526717557251909) internal successors, (151), 144 states have internal predecessors, (151), 36 states have call successors, (36), 30 states have call predecessors, (36), 36 states have return successors, (46), 38 states have call predecessors, (46), 36 states have call successors, (46) [2021-11-23 03:42:07,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2021-11-23 03:42:07,828 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 33 [2021-11-23 03:42:07,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:07,829 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2021-11-23 03:42:07,829 INFO L471 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:42:07,829 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2021-11-23 03:42:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 03:42:07,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:07,832 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:42:07,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:42:07,832 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:07,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:07,833 INFO L85 PathProgramCache]: Analyzing trace with hash -603684493, now seen corresponding path program 1 times [2021-11-23 03:42:07,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:07,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234318305] [2021-11-23 03:42:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:07,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:42:07,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:07,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234318305] [2021-11-23 03:42:07,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234318305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:07,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:07,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:42:07,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520095919] [2021-11-23 03:42:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:07,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:42:07,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:07,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:42:07,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:42:07,946 INFO L87 Difference]: Start difference. First operand 204 states and 233 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 03:42:08,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:08,141 INFO L93 Difference]: Finished difference Result 543 states and 641 transitions. [2021-11-23 03:42:08,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:42:08,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 38 [2021-11-23 03:42:08,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:08,146 INFO L225 Difference]: With dead ends: 543 [2021-11-23 03:42:08,146 INFO L226 Difference]: Without dead ends: 341 [2021-11-23 03:42:08,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:42:08,148 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 116 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:08,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 233 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:42:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-23 03:42:08,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 297. [2021-11-23 03:42:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 196 states have (on average 1.1581632653061225) internal successors, (227), 211 states have internal predecessors, (227), 50 states have call successors, (50), 46 states have call predecessors, (50), 50 states have return successors, (64), 52 states have call predecessors, (64), 50 states have call successors, (64) [2021-11-23 03:42:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 341 transitions. [2021-11-23 03:42:08,191 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 341 transitions. Word has length 38 [2021-11-23 03:42:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:08,193 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 341 transitions. [2021-11-23 03:42:08,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 03:42:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 341 transitions. [2021-11-23 03:42:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 03:42:08,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:08,196 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:42:08,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:42:08,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:08,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:08,198 INFO L85 PathProgramCache]: Analyzing trace with hash 641822293, now seen corresponding path program 1 times [2021-11-23 03:42:08,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:08,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513096722] [2021-11-23 03:42:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:08,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:42:08,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:08,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513096722] [2021-11-23 03:42:08,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513096722] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:42:08,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821273530] [2021-11-23 03:42:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:08,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:42:08,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:42:08,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:42:08,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:42:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:08,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 03:42:08,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:42:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:42:09,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:42:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:42:09,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821273530] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:42:09,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1586541387] [2021-11-23 03:42:09,725 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2021-11-23 03:42:09,726 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:42:09,730 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:42:09,735 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:42:09,736 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:42:15,225 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 294 for LOIs [2021-11-23 03:42:15,288 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 314 for LOIs [2021-11-23 03:42:17,162 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 311 for LOIs [2021-11-23 03:42:18,818 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 312 for LOIs [2021-11-23 03:42:19,694 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 44 for LOIs [2021-11-23 03:42:19,703 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 292 for LOIs [2021-11-23 03:42:19,760 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:42:57,484 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4525#(and (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 0)) (<= ~pumpRunning~0 1) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 2 ~waterLevel~0) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= ~methaneLevelCritical~0 1) (<= 2 |old(~waterLevel~0)|) (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| ~methaneLevelCritical~0) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 03:42:57,484 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:42:57,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:42:57,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 32 [2021-11-23 03:42:57,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800058534] [2021-11-23 03:42:57,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:42:57,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 03:42:57,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 03:42:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=3235, Unknown=0, NotChecked=0, Total=3660 [2021-11-23 03:42:57,489 INFO L87 Difference]: Start difference. First operand 297 states and 341 transitions. Second operand has 32 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 8 states have call successors, (16), 6 states have call predecessors, (16), 13 states have return successors, (16), 14 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 03:43:00,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:00,456 INFO L93 Difference]: Finished difference Result 702 states and 868 transitions. [2021-11-23 03:43:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-23 03:43:00,457 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 8 states have call successors, (16), 6 states have call predecessors, (16), 13 states have return successors, (16), 14 states have call predecessors, (16), 7 states have call successors, (16) Word has length 41 [2021-11-23 03:43:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:00,460 INFO L225 Difference]: With dead ends: 702 [2021-11-23 03:43:00,460 INFO L226 Difference]: Without dead ends: 407 [2021-11-23 03:43:00,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 82 SyntacticMatches, 6 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4373 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=1276, Invalid=11156, Unknown=0, NotChecked=0, Total=12432 [2021-11-23 03:43:00,468 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 879 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:00,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 566 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 03:43:00,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-23 03:43:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 328. [2021-11-23 03:43:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 215 states have (on average 1.1348837209302325) internal successors, (244), 230 states have internal predecessors, (244), 57 states have call successors, (57), 52 states have call predecessors, (57), 55 states have return successors, (70), 57 states have call predecessors, (70), 57 states have call successors, (70) [2021-11-23 03:43:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 371 transitions. [2021-11-23 03:43:00,499 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 371 transitions. Word has length 41 [2021-11-23 03:43:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:00,500 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 371 transitions. [2021-11-23 03:43:00,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 8 states have call successors, (16), 6 states have call predecessors, (16), 13 states have return successors, (16), 14 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 03:43:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 371 transitions. [2021-11-23 03:43:00,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 03:43:00,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:00,502 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:00,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:43:00,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 03:43:00,717 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:43:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2064102182, now seen corresponding path program 1 times [2021-11-23 03:43:00,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:00,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499721588] [2021-11-23 03:43:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:00,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:43:00,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:00,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499721588] [2021-11-23 03:43:00,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499721588] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:43:00,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954623760] [2021-11-23 03:43:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:00,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:43:00,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:43:00,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:43:00,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:43:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:00,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 03:43:00,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:43:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:43:01,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:43:01,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954623760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:01,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:43:01,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 17 [2021-11-23 03:43:01,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823308306] [2021-11-23 03:43:01,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:01,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:43:01,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:01,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:43:01,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:43:01,145 INFO L87 Difference]: Start difference. First operand 328 states and 371 transitions. Second operand has 11 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:43:01,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:01,438 INFO L93 Difference]: Finished difference Result 842 states and 965 transitions. [2021-11-23 03:43:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 03:43:01,441 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) Word has length 77 [2021-11-23 03:43:01,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:01,442 INFO L225 Difference]: With dead ends: 842 [2021-11-23 03:43:01,443 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:43:01,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:43:01,449 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 48 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:01,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 358 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:43:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:43:01,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:43:01,451 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) [2021-11-23 03:43:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:43:01,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2021-11-23 03:43:01,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:01,452 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:43:01,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:43:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:43:01,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:43:01,454 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:43:01,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:43:01,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:43:01,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:43:04,791 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 158 164) no Hoare annotation was computed. [2021-11-23 03:43:04,791 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 158 164) the Hoare annotation is: true [2021-11-23 03:43:04,791 INFO L854 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 530 541) the Hoare annotation is: (and (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 0) (not (= 1 ~systemActive~0))) (or (not (= |old(~methaneLevelCritical~0)| ~systemActive~0)) (not (= ~pumpRunning~0 0)) (= ~methaneLevelCritical~0 1) (not (= |old(~methaneLevelCritical~0)| 1)))) [2021-11-23 03:43:04,792 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 530 541) no Hoare annotation was computed. [2021-11-23 03:43:04,792 INFO L861 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 542 550) the Hoare annotation is: true [2021-11-23 03:43:04,792 INFO L858 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 542 550) no Hoare annotation was computed. [2021-11-23 03:43:04,792 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 335 364) no Hoare annotation was computed. [2021-11-23 03:43:04,792 INFO L858 garLoopResultBuilder]: For program point L349(lines 349 353) no Hoare annotation was computed. [2021-11-23 03:43:04,792 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 335 364) the Hoare annotation is: true [2021-11-23 03:43:04,792 INFO L861 garLoopResultBuilder]: At program point L349-1(lines 349 353) the Hoare annotation is: true [2021-11-23 03:43:04,792 INFO L861 garLoopResultBuilder]: At program point L345-2(lines 345 359) the Hoare annotation is: true [2021-11-23 03:43:04,792 INFO L861 garLoopResultBuilder]: At program point L341(line 341) the Hoare annotation is: true [2021-11-23 03:43:04,792 INFO L858 garLoopResultBuilder]: For program point L341-1(line 341) no Hoare annotation was computed. [2021-11-23 03:43:04,792 INFO L861 garLoopResultBuilder]: At program point L360(lines 335 364) the Hoare annotation is: true [2021-11-23 03:43:04,793 INFO L858 garLoopResultBuilder]: For program point L356(line 356) no Hoare annotation was computed. [2021-11-23 03:43:04,793 INFO L854 garLoopResultBuilder]: At program point L206(line 206) the Hoare annotation is: (and (or (not (= ~methaneLevelCritical~0 ~systemActive~0)) (not (= ~methaneLevelCritical~0 1))) (or (not (= 1 ~systemActive~0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= |old(~pumpRunning~0)| 0)) (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0)) (not (= ~methaneLevelCritical~0 0)))) [2021-11-23 03:43:04,793 INFO L854 garLoopResultBuilder]: At program point L198(line 198) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2) (or (and .cse0 .cse3) (not (= ~methaneLevelCritical~0 ~systemActive~0)) (not (= ~methaneLevelCritical~0 1))) (or .cse3 .cse1 .cse2))) [2021-11-23 03:43:04,793 INFO L858 garLoopResultBuilder]: For program point L198-1(line 198) no Hoare annotation was computed. [2021-11-23 03:43:04,793 INFO L854 garLoopResultBuilder]: At program point L483(line 483) the Hoare annotation is: (let ((.cse10 (= |old(~pumpRunning~0)| 0))) (let ((.cse4 (= ~pumpRunning~0 0)) (.cse11 (= ~methaneLevelCritical~0 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse12 (not .cse10)) (.cse13 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0)) (.cse14 (= ~methaneLevelCritical~0 0)) (.cse15 (= 1 ~systemActive~0))) (let ((.cse5 (not .cse15)) (.cse6 (and .cse0 .cse12 .cse13 .cse14 .cse15)) (.cse7 (not .cse14)) (.cse1 (not .cse11)) (.cse8 (= ~waterLevel~0 1)) (.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse3 (and .cse11 .cse12 .cse4 .cse13)) (.cse9 (and (not (= |old(~waterLevel~0)| 1)) .cse10))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse6 .cse7 (and (not .cse8) (= ~pumpRunning~0 1))) (or (and .cse0 .cse8) .cse5 .cse6 .cse7 .cse9) (or .cse1 (and .cse4 .cse8) .cse2 .cse3 .cse9))))) [2021-11-23 03:43:04,793 INFO L858 garLoopResultBuilder]: For program point L483-1(line 483) no Hoare annotation was computed. [2021-11-23 03:43:04,793 INFO L854 garLoopResultBuilder]: At program point L211(line 211) the Hoare annotation is: (let ((.cse2 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~pumpRunning~0 0))) (.cse3 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse4 (not (= ~methaneLevelCritical~0 1))) (.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse5 (= ~waterLevel~0 1)) (.cse6 (and (not (= |old(~waterLevel~0)| 1)) (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse2 .cse4) (or .cse3 .cse4 .cse5 .cse6) (or .cse0 .cse1 .cse5 .cse6))) [2021-11-23 03:43:04,794 INFO L854 garLoopResultBuilder]: At program point L211-1(lines 192 216) the Hoare annotation is: (let ((.cse10 (= |old(~pumpRunning~0)| 0))) (let ((.cse4 (= ~pumpRunning~0 0)) (.cse11 (= ~methaneLevelCritical~0 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse12 (not .cse10)) (.cse13 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0)) (.cse14 (= ~methaneLevelCritical~0 0)) (.cse15 (= 1 ~systemActive~0))) (let ((.cse5 (not .cse15)) (.cse6 (and .cse0 .cse12 .cse13 .cse14 .cse15)) (.cse7 (not .cse14)) (.cse1 (not .cse11)) (.cse8 (= ~waterLevel~0 1)) (.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse3 (and .cse11 .cse12 .cse4 .cse13)) (.cse9 (and (not (= |old(~waterLevel~0)| 1)) .cse10))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse6 .cse7 (and (not .cse8) (= ~pumpRunning~0 1))) (or (and .cse0 .cse8) .cse5 .cse6 .cse7 .cse9) (or .cse1 (and .cse4 .cse8) .cse2 .cse3 .cse9))))) [2021-11-23 03:43:04,794 INFO L858 garLoopResultBuilder]: For program point L145-1(lines 145 151) no Hoare annotation was computed. [2021-11-23 03:43:04,794 INFO L854 garLoopResultBuilder]: At program point L472(line 472) the Hoare annotation is: (and (or (not (= ~methaneLevelCritical~0 ~systemActive~0)) (not (= ~methaneLevelCritical~0 1))) (or (not (= 1 ~systemActive~0)) (not (= ~methaneLevelCritical~0 0)))) [2021-11-23 03:43:04,794 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 134 157) the Hoare annotation is: (let ((.cse3 (not (= ~pumpRunning~0 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse6 (= ~waterLevel~0 1)) (.cse7 (and (not (= |old(~waterLevel~0)| 1)) (= |old(~pumpRunning~0)| 0))) (.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse4 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse5 (not (= ~methaneLevelCritical~0 1)))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 .cse5 .cse6 .cse7) (or .cse3 .cse1 .cse2 .cse6 .cse7) (or .cse0 .cse4 .cse5))) [2021-11-23 03:43:04,794 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 134 157) no Hoare annotation was computed. [2021-11-23 03:43:04,794 INFO L858 garLoopResultBuilder]: For program point L138-1(lines 137 156) no Hoare annotation was computed. [2021-11-23 03:43:04,794 INFO L858 garLoopResultBuilder]: For program point L489(lines 489 495) no Hoare annotation was computed. [2021-11-23 03:43:04,794 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 472) no Hoare annotation was computed. [2021-11-23 03:43:04,794 INFO L854 garLoopResultBuilder]: At program point L200(lines 200 208) the Hoare annotation is: (let ((.cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= |old(~pumpRunning~0)| 0)) (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0)))) (and (or .cse0 (not (= ~methaneLevelCritical~0 ~systemActive~0)) (not (= ~methaneLevelCritical~0 1))) (or (not (= 1 ~systemActive~0)) .cse0 (not (= ~methaneLevelCritical~0 0))))) [2021-11-23 03:43:04,795 INFO L854 garLoopResultBuilder]: At program point L485(lines 485 498) the Hoare annotation is: (let ((.cse13 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse11 (not .cse13)) (.cse8 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0)) (.cse3 (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0)) (.cse14 (= ~methaneLevelCritical~0 0)) (.cse15 (= 1 ~systemActive~0))) (let ((.cse2 (= ~pumpRunning~0 0)) (.cse9 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse10 (not (= ~methaneLevelCritical~0 1))) (.cse0 (not .cse15)) (.cse4 (not .cse14)) (.cse5 (and .cse1 .cse11 .cse8 .cse14 .cse15 .cse3)) (.cse6 (= ~waterLevel~0 1)) (.cse12 (not (= |old(~waterLevel~0)| 1)))) (and (or .cse0 (and .cse1 .cse2 .cse3) .cse4 .cse5 (and (not .cse6) .cse3 (= ~pumpRunning~0 1))) (let ((.cse7 (not .cse3))) (or (and .cse7 .cse2 .cse8) (and .cse1 .cse7 .cse2) .cse9 .cse10)) (or .cse11 .cse12 .cse9 .cse10 .cse6) (or .cse0 .cse4 .cse5 .cse6 (and .cse12 .cse13)))))) [2021-11-23 03:43:04,795 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 213) no Hoare annotation was computed. [2021-11-23 03:43:04,795 INFO L854 garLoopResultBuilder]: At program point L485-1(lines 477 501) the Hoare annotation is: (let ((.cse14 (= |old(~pumpRunning~0)| 0)) (.cse3 (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0))) (let ((.cse7 (not .cse3)) (.cse2 (= ~pumpRunning~0 0)) (.cse8 (< 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 1))) (.cse9 (<= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 0)) (.cse18 (= ~methaneLevelCritical~0 1)) (.cse15 (= ~methaneLevelCritical~0 ~systemActive~0)) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse16 (not .cse14)) (.cse17 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0)) (.cse19 (= ~methaneLevelCritical~0 0)) (.cse20 (= 1 ~systemActive~0))) (let ((.cse0 (not .cse20)) (.cse4 (not .cse19)) (.cse5 (and .cse1 .cse16 .cse17 .cse19 .cse20 .cse3)) (.cse10 (not .cse15)) (.cse11 (not .cse18)) (.cse6 (= ~waterLevel~0 1)) (.cse12 (and .cse15 .cse16 .cse7 .cse2 .cse17 .cse8 .cse18 .cse9)) (.cse13 (and (not (= |old(~waterLevel~0)| 1)) .cse14))) (and (or .cse0 (and .cse1 .cse2 .cse3) .cse4 .cse5 (and (not .cse6) .cse3 (= ~pumpRunning~0 1))) (or (and .cse1 .cse7 .cse2 .cse8 .cse9) .cse10 .cse11 .cse12) (or .cse0 .cse4 .cse5 .cse6 .cse13) (or .cse10 .cse11 .cse6 .cse12 .cse13))))) [2021-11-23 03:43:04,795 INFO L861 garLoopResultBuilder]: At program point L419-2(lines 419 426) the Hoare annotation is: true [2021-11-23 03:43:04,795 INFO L858 garLoopResultBuilder]: For program point L85(lines 85 91) no Hoare annotation was computed. [2021-11-23 03:43:04,795 INFO L854 garLoopResultBuilder]: At program point L85-1(lines 85 91) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~methaneLevelCritical~0 ~systemActive~0) (= ~methaneLevelCritical~0 1) .cse0) (and (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) .cse0))) [2021-11-23 03:43:04,795 INFO L854 garLoopResultBuilder]: At program point L110(lines 65 112) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~methaneLevelCritical~0 ~systemActive~0) (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 1) .cse0) (and (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) .cse0))) [2021-11-23 03:43:04,795 INFO L854 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~methaneLevelCritical~0 ~systemActive~0) (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 1) .cse0) (and (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) .cse0))) [2021-11-23 03:43:04,795 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 03:43:04,796 INFO L854 garLoopResultBuilder]: At program point L103-2(lines 95 108) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~methaneLevelCritical~0 ~systemActive~0) (= ~methaneLevelCritical~0 1) .cse0) (and (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) .cse0))) [2021-11-23 03:43:04,796 INFO L858 garLoopResultBuilder]: For program point L66(lines 65 112) no Hoare annotation was computed. [2021-11-23 03:43:04,796 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:43:04,796 INFO L854 garLoopResultBuilder]: At program point L87(line 87) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~methaneLevelCritical~0 ~systemActive~0) (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 1) .cse0) (and (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) .cse0))) [2021-11-23 03:43:04,796 INFO L861 garLoopResultBuilder]: At program point L116(lines 55 120) the Hoare annotation is: true [2021-11-23 03:43:04,796 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 81) no Hoare annotation was computed. [2021-11-23 03:43:04,796 INFO L858 garLoopResultBuilder]: For program point L75-1(lines 75 81) no Hoare annotation was computed. [2021-11-23 03:43:04,796 INFO L854 garLoopResultBuilder]: At program point L113(lines 64 114) the Hoare annotation is: false [2021-11-23 03:43:04,796 INFO L854 garLoopResultBuilder]: At program point L419(lines 419 426) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 1)) [2021-11-23 03:43:04,796 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 518 529) no Hoare annotation was computed. [2021-11-23 03:43:04,797 INFO L861 garLoopResultBuilder]: At program point waterRiseENTRY(lines 518 529) the Hoare annotation is: true [2021-11-23 03:43:04,797 INFO L854 garLoopResultBuilder]: At program point L180(line 180) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0)) (.cse5 (= |processEnvironment__wrappee__methaneQuery_~tmp~1#1| 0))) (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse4 (not (= ~waterLevel~0 1))) (.cse0 (and (= ~pumpRunning~0 0) (or (= |processEnvironment__wrappee__methaneQuery_~tmp~1#1| 1) .cse5))) (.cse6 (not .cse3)) (.cse7 (not (= ~methaneLevelCritical~0 ~systemActive~0))) (.cse8 (not (= ~methaneLevelCritical~0 1)))) (and (or .cse0 .cse1 .cse2) (or .cse1 .cse3 .cse2) (or .cse4 .cse1 .cse2 .cse5) (or .cse4 .cse6 .cse7 .cse8 .cse5) (or .cse0 .cse6 .cse7 .cse8)))) [2021-11-23 03:43:04,797 INFO L858 garLoopResultBuilder]: For program point L174(lines 174 182) no Hoare annotation was computed. [2021-11-23 03:43:04,797 INFO L854 garLoopResultBuilder]: At program point L170(lines 170 187) the Hoare annotation is: (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= 1 ~systemActive~0)) (not (= ~methaneLevelCritical~0 0))) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (= ~methaneLevelCritical~0 ~systemActive~0)) (not (= ~methaneLevelCritical~0 1)))) [2021-11-23 03:43:04,797 INFO L854 garLoopResultBuilder]: At program point L230(line 230) the Hoare annotation is: (let ((.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse5 (= |old(~pumpRunning~0)| 0)) (.cse4 (not (= ~waterLevel~0 1))) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (or (= |processEnvironment__wrappee__methaneQuery_~tmp~1#1| 1) (= |processEnvironment__wrappee__methaneQuery_~tmp~1#1| 0)))) (and (or (and .cse0 .cse1) .cse2 .cse3) (or .cse2 .cse3 (and .cse4 .cse5)) (or (not .cse5) (and .cse4 .cse0 .cse1) (not (= ~methaneLevelCritical~0 ~systemActive~0)) (not (= ~methaneLevelCritical~0 1))))) [2021-11-23 03:43:04,797 INFO L854 garLoopResultBuilder]: At program point L230-1(line 230) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse3 (= |processEnvironment__wrappee__methaneQuery_activatePump_#t~ret10#1| ~methaneLevelCritical~0)) (.cse4 (or (= |processEnvironment__wrappee__methaneQuery_~tmp~1#1| 1) (= |processEnvironment__wrappee__methaneQuery_~tmp~1#1| 0))) (.cse5 (not (= 1 ~systemActive~0))) (.cse6 (not (= ~methaneLevelCritical~0 0))) (.cse1 (not (= ~waterLevel~0 1))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (not (= ~methaneLevelCritical~0 ~systemActive~0)) (and .cse1 .cse2 .cse3 .cse4) (not (= ~methaneLevelCritical~0 1))) (or .cse5 .cse6 (and .cse2 .cse3 .cse4)) (or .cse5 .cse6 (and .cse1 .cse0)))) [2021-11-23 03:43:04,797 INFO L854 garLoopResultBuilder]: At program point L185(line 185) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse2 (not (= |old(~pumpRunning~0)| 0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1) (or .cse2 .cse0 .cse1) (or .cse2 (not (= ~methaneLevelCritical~0 ~systemActive~0)) (not (= ~methaneLevelCritical~0 1))))) [2021-11-23 03:43:04,797 INFO L858 garLoopResultBuilder]: For program point L185-1(lines 166 190) no Hoare annotation was computed. [2021-11-23 03:43:04,798 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 166 190) the Hoare annotation is: (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= 1 ~systemActive~0)) (not (= ~methaneLevelCritical~0 0))) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (= ~methaneLevelCritical~0 ~systemActive~0)) (not (= ~methaneLevelCritical~0 1)))) [2021-11-23 03:43:04,798 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 166 190) no Hoare annotation was computed. [2021-11-23 03:43:04,798 INFO L861 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 250 260) the Hoare annotation is: true [2021-11-23 03:43:04,798 INFO L861 garLoopResultBuilder]: At program point L255(line 255) the Hoare annotation is: true [2021-11-23 03:43:04,798 INFO L858 garLoopResultBuilder]: For program point L255-1(line 255) no Hoare annotation was computed. [2021-11-23 03:43:04,798 INFO L858 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 250 260) no Hoare annotation was computed. [2021-11-23 03:43:04,804 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:04,806 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:43:04,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:43:04 BoogieIcfgContainer [2021-11-23 03:43:04,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:43:04,853 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:43:04,853 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:43:04,854 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:43:04,854 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:04" (3/4) ... [2021-11-23 03:43:04,857 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:43:04,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-11-23 03:43:04,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-11-23 03:43:04,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2021-11-23 03:43:04,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-11-23 03:43:04,863 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-11-23 03:43:04,863 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-11-23 03:43:04,863 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2021-11-23 03:43:04,863 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2021-11-23 03:43:04,872 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 73 nodes and edges [2021-11-23 03:43:04,873 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-11-23 03:43:04,873 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-23 03:43:04,874 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 03:43:04,875 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 03:43:04,875 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:43:04,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:43:04,899 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) && ((((!(pumpRunning == 0) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) || waterLevel == 1) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || waterLevel == 1) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) [2021-11-23 03:43:04,900 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) || (((methaneLevelCritical == systemActive && !(\old(pumpRunning) == 0)) && pumpRunning == 0) && tmp == methaneLevelCritical)) && ((((pumpRunning == 0 || !(1 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive)) || !(methaneLevelCritical == 0)) || (!(waterLevel == 1) && pumpRunning == 1))) && (((((pumpRunning == \old(pumpRunning) && waterLevel == 1) || !(1 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive)) || !(methaneLevelCritical == 0)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(methaneLevelCritical == systemActive) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || (((methaneLevelCritical == systemActive && !(\old(pumpRunning) == 0)) && pumpRunning == 0) && tmp == methaneLevelCritical)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) [2021-11-23 03:43:04,900 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) [2021-11-23 03:43:04,901 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) && ((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical)) || !(methaneLevelCritical == 0)) [2021-11-23 03:43:04,901 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == 0)) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive) && tmp == 0)) || ((!(waterLevel == 1) && tmp == 0) && pumpRunning == 1)) && (((((!(tmp == 0) && pumpRunning == 0) && tmp == methaneLevelCritical) || ((pumpRunning == \old(pumpRunning) && !(tmp == 0)) && pumpRunning == 0)) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) || waterLevel == 1)) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive) && tmp == 0)) || waterLevel == 1) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) [2021-11-23 03:43:04,901 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == 0)) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive) && tmp == 0)) || ((!(waterLevel == 1) && tmp == 0) && pumpRunning == 1)) && (((((((pumpRunning == \old(pumpRunning) && !(tmp == 0)) && pumpRunning == 0) && 0 < tmp___0 + 1) && tmp___0 <= 0) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) || (((((((methaneLevelCritical == systemActive && !(\old(pumpRunning) == 0)) && !(tmp == 0)) && pumpRunning == 0) && tmp == methaneLevelCritical) && 0 < tmp___0 + 1) && methaneLevelCritical == 1) && tmp___0 <= 0))) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive) && tmp == 0)) || waterLevel == 1) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(methaneLevelCritical == systemActive) || !(methaneLevelCritical == 1)) || waterLevel == 1) || (((((((methaneLevelCritical == systemActive && !(\old(pumpRunning) == 0)) && !(tmp == 0)) && pumpRunning == 0) && tmp == methaneLevelCritical) && 0 < tmp___0 + 1) && methaneLevelCritical == 1) && tmp___0 <= 0)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) [2021-11-23 03:43:04,902 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == systemActive)) || (((!(waterLevel == 1) && pumpRunning == 0) && aux-isMethaneAlarm()-aux == methaneLevelCritical) && (tmp == 1 || tmp == 0))) || !(methaneLevelCritical == 1)) && ((!(1 == systemActive) || !(methaneLevelCritical == 0)) || ((pumpRunning == 0 && aux-isMethaneAlarm()-aux == methaneLevelCritical) && (tmp == 1 || tmp == 0)))) && ((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (!(waterLevel == 1) && \old(pumpRunning) == 0)) [2021-11-23 03:43:04,928 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:43:04,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:43:04,929 INFO L158 Benchmark]: Toolchain (without parser) took 61216.67ms. Allocated memory was 92.3MB in the beginning and 251.7MB in the end (delta: 159.4MB). Free memory was 54.2MB in the beginning and 126.8MB in the end (delta: -72.6MB). Peak memory consumption was 85.0MB. Max. memory is 16.1GB. [2021-11-23 03:43:04,929 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 71.6MB in the beginning and 71.6MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:43:04,930 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.31ms. Allocated memory was 92.3MB in the beginning and 119.5MB in the end (delta: 27.3MB). Free memory was 54.0MB in the beginning and 87.4MB in the end (delta: -33.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:43:04,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.05ms. Allocated memory is still 119.5MB. Free memory was 87.4MB in the beginning and 84.8MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:43:04,931 INFO L158 Benchmark]: Boogie Preprocessor took 54.81ms. Allocated memory is still 119.5MB. Free memory was 84.8MB in the beginning and 83.2MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 03:43:04,931 INFO L158 Benchmark]: RCFGBuilder took 654.67ms. Allocated memory is still 119.5MB. Free memory was 83.2MB in the beginning and 61.8MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 03:43:04,931 INFO L158 Benchmark]: TraceAbstraction took 59855.20ms. Allocated memory was 119.5MB in the beginning and 251.7MB in the end (delta: 132.1MB). Free memory was 61.4MB in the beginning and 133.1MB in the end (delta: -71.7MB). Peak memory consumption was 124.0MB. Max. memory is 16.1GB. [2021-11-23 03:43:04,932 INFO L158 Benchmark]: Witness Printer took 75.30ms. Allocated memory is still 251.7MB. Free memory was 133.1MB in the beginning and 126.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:43:04,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 71.6MB in the beginning and 71.6MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.31ms. Allocated memory was 92.3MB in the beginning and 119.5MB in the end (delta: 27.3MB). Free memory was 54.0MB in the beginning and 87.4MB in the end (delta: -33.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.05ms. Allocated memory is still 119.5MB. Free memory was 87.4MB in the beginning and 84.8MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.81ms. Allocated memory is still 119.5MB. Free memory was 84.8MB in the beginning and 83.2MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 654.67ms. Allocated memory is still 119.5MB. Free memory was 83.2MB in the beginning and 61.8MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 59855.20ms. Allocated memory was 119.5MB in the beginning and 251.7MB in the end (delta: 132.1MB). Free memory was 61.4MB in the beginning and 133.1MB in the end (delta: -71.7MB). Peak memory consumption was 124.0MB. Max. memory is 16.1GB. * Witness Printer took 75.30ms. Allocated memory is still 251.7MB. Free memory was 133.1MB in the beginning and 126.8MB in the end (delta: 6.3MB). 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: 472]: 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, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.7s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1442 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1406 mSDsluCounter, 2038 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1849 mSDsCounter, 881 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4178 IncrementalHoareTripleChecker+Invalid, 5059 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 881 mSolverCounterUnsat, 593 mSDtfsCounter, 4178 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 362 GetRequests, 179 SyntacticMatches, 6 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4467 ImplicationChecksByTransitivity, 40.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=328occurred in iteration=8, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 187 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 1003 PreInvPairs, 1189 NumberOfFragments, 1402 HoareAnnotationTreeSize, 1003 FomulaSimplifications, 2749 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 37 FomulaSimplificationsInter, 16076 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 413 NumberOfCodeBlocks, 413 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 442 ConstructedInterpolants, 0 QuantifiedInterpolants, 1213 SizeOfPredicates, 16 NumberOfNonLiveVariables, 805 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 71/78 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: 65]: Loop Invariant Derived loop invariant: (((methaneLevelCritical == systemActive && pumpRunning == 0) && methaneLevelCritical == 1) && splverifierCounter == 0) || ((methaneLevelCritical == 0 && 1 == systemActive) && splverifierCounter == 0) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: ((methaneLevelCritical == systemActive && methaneLevelCritical == 1) && splverifierCounter == 0) || ((methaneLevelCritical == 0 && 1 == systemActive) && splverifierCounter == 0) - InvariantResult [Line: 419]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && methaneLevelCritical == 0) && 1 == systemActive) && waterLevel == 1 - InvariantResult [Line: 485]: Loop Invariant Derived loop invariant: ((((((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == 0)) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive) && tmp == 0)) || ((!(waterLevel == 1) && tmp == 0) && pumpRunning == 1)) && (((((!(tmp == 0) && pumpRunning == 0) && tmp == methaneLevelCritical) || ((pumpRunning == \old(pumpRunning) && !(tmp == 0)) && pumpRunning == 0)) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) || waterLevel == 1)) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive) && tmp == 0)) || waterLevel == 1) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: ((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) && ((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical)) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: ((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) && ((((!(pumpRunning == 0) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) || waterLevel == 1) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || waterLevel == 1) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) - InvariantResult [Line: 192]: Loop Invariant Derived loop invariant: (((((pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) || (((methaneLevelCritical == systemActive && !(\old(pumpRunning) == 0)) && pumpRunning == 0) && tmp == methaneLevelCritical)) && ((((pumpRunning == 0 || !(1 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive)) || !(methaneLevelCritical == 0)) || (!(waterLevel == 1) && pumpRunning == 1))) && (((((pumpRunning == \old(pumpRunning) && waterLevel == 1) || !(1 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive)) || !(methaneLevelCritical == 0)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(methaneLevelCritical == systemActive) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || (((methaneLevelCritical == systemActive && !(\old(pumpRunning) == 0)) && pumpRunning == 0) && tmp == methaneLevelCritical)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) - InvariantResult [Line: 335]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 472]: Loop Invariant Derived loop invariant: (!(methaneLevelCritical == systemActive) || !(methaneLevelCritical == 1)) && (!(1 == systemActive) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 477]: Loop Invariant Derived loop invariant: ((((((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == 0)) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive) && tmp == 0)) || ((!(waterLevel == 1) && tmp == 0) && pumpRunning == 1)) && (((((((pumpRunning == \old(pumpRunning) && !(tmp == 0)) && pumpRunning == 0) && 0 < tmp___0 + 1) && tmp___0 <= 0) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) || (((((((methaneLevelCritical == systemActive && !(\old(pumpRunning) == 0)) && !(tmp == 0)) && pumpRunning == 0) && tmp == methaneLevelCritical) && 0 < tmp___0 + 1) && methaneLevelCritical == 1) && tmp___0 <= 0))) && ((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 1 == systemActive) && tmp == 0)) || waterLevel == 1) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(methaneLevelCritical == systemActive) || !(methaneLevelCritical == 1)) || waterLevel == 1) || (((((((methaneLevelCritical == systemActive && !(\old(pumpRunning) == 0)) && !(tmp == 0)) && pumpRunning == 0) && tmp == methaneLevelCritical) && 0 < tmp___0 + 1) && methaneLevelCritical == 1) && tmp___0 <= 0)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) - InvariantResult [Line: 230]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == systemActive)) || (((!(waterLevel == 1) && pumpRunning == 0) && aux-isMethaneAlarm()-aux == methaneLevelCritical) && (tmp == 1 || tmp == 0))) || !(methaneLevelCritical == 1)) && ((!(1 == systemActive) || !(methaneLevelCritical == 0)) || ((pumpRunning == 0 && aux-isMethaneAlarm()-aux == methaneLevelCritical) && (tmp == 1 || tmp == 0)))) && ((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (!(waterLevel == 1) && \old(pumpRunning) == 0)) - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: ((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(methaneLevelCritical == systemActive)) || !(methaneLevelCritical == 1)) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 345]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 419]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 03:43:04,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104410ae-f5bc-4d16-95c7-cf18b4b6a56e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE