./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product62.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_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/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_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/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_421c052f-a5bb-40f4-8410-767c36846cba/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 34b47c00ac265c7154b048b065075686f0b0d02157935b615817b802464c404c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:58:04,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:58:04,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:58:04,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:58:04,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:58:04,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:58:04,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:58:04,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:58:04,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:58:04,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:58:04,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:58:04,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:58:04,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:58:04,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:58:04,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:58:04,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:58:04,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:58:04,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:58:04,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:58:04,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:58:04,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:58:04,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:58:04,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:58:04,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:58:04,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:58:04,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:58:04,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:58:04,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:58:04,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:58:04,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:58:04,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:58:04,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:58:04,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:58:04,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:58:04,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:58:04,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:58:04,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:58:04,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:58:04,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:58:04,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:58:04,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:58:04,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 01:58:04,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:58:04,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:58:04,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:58:04,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:58:04,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:58:04,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:58:04,632 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:58:04,633 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:58:04,633 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:58:04,633 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:58:04,634 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:58:04,634 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:58:04,635 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:58:04,635 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:58:04,635 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:58:04,635 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:58:04,636 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:58:04,636 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:58:04,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:58:04,637 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:58:04,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:58:04,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:58:04,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:58:04,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:58:04,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:58:04,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:58:04,640 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:58:04,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:58:04,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:58:04,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:58:04,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:58:04,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:58:04,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:58:04,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:58:04,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:58:04,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:58:04,643 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:58:04,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:58:04,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:58:04,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:58:04,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:58:04,644 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_421c052f-a5bb-40f4-8410-767c36846cba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34b47c00ac265c7154b048b065075686f0b0d02157935b615817b802464c404c [2021-11-23 01:58:04,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:58:04,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:58:04,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:58:04,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:58:04,988 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:58:04,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c [2021-11-23 01:58:05,066 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/data/c6873b3d5/8d55ebe2089145d09a7022a76a76f054/FLAG05b561477 [2021-11-23 01:58:05,645 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:58:05,646 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c [2021-11-23 01:58:05,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/data/c6873b3d5/8d55ebe2089145d09a7022a76a76f054/FLAG05b561477 [2021-11-23 01:58:05,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/data/c6873b3d5/8d55ebe2089145d09a7022a76a76f054 [2021-11-23 01:58:05,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:58:05,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:58:05,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:58:05,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:58:05,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:58:05,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:05" (1/1) ... [2021-11-23 01:58:05,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b58462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:05, skipping insertion in model container [2021-11-23 01:58:05,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:05" (1/1) ... [2021-11-23 01:58:05,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:58:06,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:58:06,349 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_421c052f-a5bb-40f4-8410-767c36846cba/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c[19180,19193] [2021-11-23 01:58:06,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:58:06,364 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:58:06,466 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_421c052f-a5bb-40f4-8410-767c36846cba/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c[19180,19193] [2021-11-23 01:58:06,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:58:06,498 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:58:06,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06 WrapperNode [2021-11-23 01:58:06,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:58:06,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:58:06,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:58:06,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:58:06,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06" (1/1) ... [2021-11-23 01:58:06,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06" (1/1) ... [2021-11-23 01:58:06,587 INFO L137 Inliner]: procedures = 60, calls = 164, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 297 [2021-11-23 01:58:06,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:58:06,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:58:06,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:58:06,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:58:06,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06" (1/1) ... [2021-11-23 01:58:06,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06" (1/1) ... [2021-11-23 01:58:06,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06" (1/1) ... [2021-11-23 01:58:06,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06" (1/1) ... [2021-11-23 01:58:06,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06" (1/1) ... [2021-11-23 01:58:06,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06" (1/1) ... [2021-11-23 01:58:06,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06" (1/1) ... [2021-11-23 01:58:06,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:58:06,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:58:06,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:58:06,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:58:06,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06" (1/1) ... [2021-11-23 01:58:06,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:58:06,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:58:06,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:58:06,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:58:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:58:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 01:58:06,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 01:58:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 01:58:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 01:58:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 01:58:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 01:58:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 01:58:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 01:58:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 01:58:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 01:58:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-11-23 01:58:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-11-23 01:58:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-11-23 01:58:06,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-11-23 01:58:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-11-23 01:58:06,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-11-23 01:58:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-23 01:58:06,737 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-23 01:58:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:58:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 01:58:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 01:58:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:58:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:58:06,815 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:58:06,816 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:58:07,191 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:58:07,360 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:58:07,360 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 01:58:07,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:07 BoogieIcfgContainer [2021-11-23 01:58:07,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:58:07,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:58:07,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:58:07,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:58:07,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:58:05" (1/3) ... [2021-11-23 01:58:07,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c20644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:07, skipping insertion in model container [2021-11-23 01:58:07,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:06" (2/3) ... [2021-11-23 01:58:07,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c20644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:07, skipping insertion in model container [2021-11-23 01:58:07,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:07" (3/3) ... [2021-11-23 01:58:07,372 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product62.cil.c [2021-11-23 01:58:07,378 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:58:07,378 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:58:07,430 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:58:07,438 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 01:58:07,439 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:58:07,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 01:58:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 01:58:07,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:07,468 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] [2021-11-23 01:58:07,469 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:07,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:07,475 INFO L85 PathProgramCache]: Analyzing trace with hash 442962897, now seen corresponding path program 1 times [2021-11-23 01:58:07,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:07,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755201400] [2021-11-23 01:58:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:07,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:07,683 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 01:58:07,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:07,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755201400] [2021-11-23 01:58:07,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755201400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:07,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:58:07,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:58:07,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688905842] [2021-11-23 01:58:07,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:07,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:58:07,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:07,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:58:07,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:58:07,725 INFO L87 Difference]: Start difference. First operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:58:07,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:07,800 INFO L93 Difference]: Finished difference Result 148 states and 199 transitions. [2021-11-23 01:58:07,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:58:07,803 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-11-23 01:58:07,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:07,816 INFO L225 Difference]: With dead ends: 148 [2021-11-23 01:58:07,816 INFO L226 Difference]: Without dead ends: 70 [2021-11-23 01:58:07,821 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 01:58:07,828 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:07,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:58:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-23 01:58:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-23 01:58:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 51 states have internal predecessors, (55), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-23 01:58:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2021-11-23 01:58:07,903 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 21 [2021-11-23 01:58:07,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:07,905 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2021-11-23 01:58:07,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:58:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2021-11-23 01:58:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 01:58:07,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:07,912 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] [2021-11-23 01:58:07,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:58:07,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2021379213, now seen corresponding path program 1 times [2021-11-23 01:58:07,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:07,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211200469] [2021-11-23 01:58:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:07,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:08,016 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 01:58:08,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:08,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211200469] [2021-11-23 01:58:08,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211200469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:08,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:58:08,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:58:08,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428532952] [2021-11-23 01:58:08,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:08,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:58:08,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:08,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:58:08,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:58:08,023 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:58:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:08,070 INFO L93 Difference]: Finished difference Result 117 states and 151 transitions. [2021-11-23 01:58:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:58:08,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-23 01:58:08,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:08,072 INFO L225 Difference]: With dead ends: 117 [2021-11-23 01:58:08,073 INFO L226 Difference]: Without dead ends: 62 [2021-11-23 01:58:08,074 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 01:58:08,075 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:08,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 119 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:58:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-23 01:58:08,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-23 01:58:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 46 states have internal predecessors, (49), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 01:58:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2021-11-23 01:58:08,088 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 22 [2021-11-23 01:58:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:08,088 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2021-11-23 01:58:08,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:58:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2021-11-23 01:58:08,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 01:58:08,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:08,090 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] [2021-11-23 01:58:08,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:58:08,091 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:08,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:08,092 INFO L85 PathProgramCache]: Analyzing trace with hash 495074929, now seen corresponding path program 1 times [2021-11-23 01:58:08,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:08,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708454091] [2021-11-23 01:58:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:08,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 01:58:08,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:08,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708454091] [2021-11-23 01:58:08,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708454091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:08,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:58:08,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 01:58:08,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834767560] [2021-11-23 01:58:08,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:08,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:58:08,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:08,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:58:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:58:08,270 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:58:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:08,573 INFO L93 Difference]: Finished difference Result 166 states and 218 transitions. [2021-11-23 01:58:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 01:58:08,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-11-23 01:58:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:08,576 INFO L225 Difference]: With dead ends: 166 [2021-11-23 01:58:08,576 INFO L226 Difference]: Without dead ends: 106 [2021-11-23 01:58:08,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 01:58:08,579 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 42 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:08,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 312 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 01:58:08,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-23 01:58:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2021-11-23 01:58:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 64 states have (on average 1.25) internal successors, (80), 72 states have internal predecessors, (80), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (26), 18 states have call predecessors, (26), 20 states have call successors, (26) [2021-11-23 01:58:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 126 transitions. [2021-11-23 01:58:08,609 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 126 transitions. Word has length 24 [2021-11-23 01:58:08,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:08,610 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 126 transitions. [2021-11-23 01:58:08,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:58:08,610 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 126 transitions. [2021-11-23 01:58:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 01:58:08,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:08,611 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 01:58:08,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:58:08,612 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:08,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:08,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1823229499, now seen corresponding path program 1 times [2021-11-23 01:58:08,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:08,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708862175] [2021-11-23 01:58:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:08,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:08,778 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 01:58:08,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:08,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708862175] [2021-11-23 01:58:08,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708862175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:08,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:58:08,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 01:58:08,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662750478] [2021-11-23 01:58:08,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:08,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:58:08,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:08,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:58:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:58:08,782 INFO L87 Difference]: Start difference. First operand 102 states and 126 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 01:58:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:09,018 INFO L93 Difference]: Finished difference Result 289 states and 357 transitions. [2021-11-23 01:58:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 01:58:09,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 41 [2021-11-23 01:58:09,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:09,029 INFO L225 Difference]: With dead ends: 289 [2021-11-23 01:58:09,030 INFO L226 Difference]: Without dead ends: 189 [2021-11-23 01:58:09,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 01:58:09,042 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 107 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:09,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 266 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:58:09,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-23 01:58:09,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2021-11-23 01:58:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 116 states have (on average 1.2241379310344827) internal successors, (142), 129 states have internal predecessors, (142), 36 states have call successors, (36), 31 states have call predecessors, (36), 32 states have return successors, (48), 33 states have call predecessors, (48), 36 states have call successors, (48) [2021-11-23 01:58:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 226 transitions. [2021-11-23 01:58:09,102 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 226 transitions. Word has length 41 [2021-11-23 01:58:09,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:09,102 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 226 transitions. [2021-11-23 01:58:09,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 01:58:09,103 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 226 transitions. [2021-11-23 01:58:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 01:58:09,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:09,111 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, 1, 1, 1] [2021-11-23 01:58:09,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:58:09,112 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:09,115 INFO L85 PathProgramCache]: Analyzing trace with hash -203386622, now seen corresponding path program 1 times [2021-11-23 01:58:09,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:09,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044933405] [2021-11-23 01:58:09,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:09,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:09,306 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 01:58:09,307 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:09,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044933405] [2021-11-23 01:58:09,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044933405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:09,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:58:09,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 01:58:09,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97218170] [2021-11-23 01:58:09,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:09,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 01:58:09,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:09,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 01:58:09,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:58:09,316 INFO L87 Difference]: Start difference. First operand 185 states and 226 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-23 01:58:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:09,955 INFO L93 Difference]: Finished difference Result 435 states and 545 transitions. [2021-11-23 01:58:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 01:58:09,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 44 [2021-11-23 01:58:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:09,960 INFO L225 Difference]: With dead ends: 435 [2021-11-23 01:58:09,960 INFO L226 Difference]: Without dead ends: 305 [2021-11-23 01:58:09,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-23 01:58:09,962 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 236 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:09,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 282 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 01:58:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-23 01:58:10,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 275. [2021-11-23 01:58:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 177 states have (on average 1.231638418079096) internal successors, (218), 195 states have internal predecessors, (218), 51 states have call successors, (51), 39 states have call predecessors, (51), 46 states have return successors, (70), 52 states have call predecessors, (70), 51 states have call successors, (70) [2021-11-23 01:58:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 339 transitions. [2021-11-23 01:58:10,006 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 339 transitions. Word has length 44 [2021-11-23 01:58:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:10,007 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 339 transitions. [2021-11-23 01:58:10,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-23 01:58:10,007 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 339 transitions. [2021-11-23 01:58:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 01:58:10,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:10,010 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-23 01:58:10,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:58:10,010 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:10,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1805179232, now seen corresponding path program 1 times [2021-11-23 01:58:10,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:10,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940551611] [2021-11-23 01:58:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:10,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 01:58:10,122 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:10,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940551611] [2021-11-23 01:58:10,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940551611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:10,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:58:10,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 01:58:10,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230437862] [2021-11-23 01:58:10,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:10,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 01:58:10,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:10,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 01:58:10,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:58:10,125 INFO L87 Difference]: Start difference. First operand 275 states and 339 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 01:58:10,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:10,590 INFO L93 Difference]: Finished difference Result 561 states and 726 transitions. [2021-11-23 01:58:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 01:58:10,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2021-11-23 01:58:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:10,600 INFO L225 Difference]: With dead ends: 561 [2021-11-23 01:58:10,600 INFO L226 Difference]: Without dead ends: 412 [2021-11-23 01:58:10,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-11-23 01:58:10,603 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 123 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:10,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 433 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 01:58:10,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-23 01:58:10,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 379. [2021-11-23 01:58:10,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 244 states have (on average 1.2049180327868851) internal successors, (294), 272 states have internal predecessors, (294), 70 states have call successors, (70), 54 states have call predecessors, (70), 64 states have return successors, (103), 70 states have call predecessors, (103), 70 states have call successors, (103) [2021-11-23 01:58:10,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 467 transitions. [2021-11-23 01:58:10,682 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 467 transitions. Word has length 61 [2021-11-23 01:58:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:10,683 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 467 transitions. [2021-11-23 01:58:10,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 01:58:10,684 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 467 transitions. [2021-11-23 01:58:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 01:58:10,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:10,696 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:58:10,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:58:10,697 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:10,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:10,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1711071724, now seen corresponding path program 1 times [2021-11-23 01:58:10,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:10,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192109340] [2021-11-23 01:58:10,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:10,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 01:58:10,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:10,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192109340] [2021-11-23 01:58:10,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192109340] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:58:10,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706690381] [2021-11-23 01:58:10,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:10,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:58:10,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:58:10,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:58:10,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:58:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:11,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 01:58:11,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:58:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:58:11,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:58:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 01:58:11,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706690381] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:58:11,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [916055730] [2021-11-23 01:58:11,861 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2021-11-23 01:58:11,861 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:58:11,867 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:58:11,873 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:58:11,873 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:58:19,130 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 53 for LOIs [2021-11-23 01:58:19,143 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 47 for LOIs [2021-11-23 01:58:19,631 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 44 for LOIs [2021-11-23 01:58:19,641 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 26 for LOIs [2021-11-23 01:58:19,710 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2021-11-23 01:58:19,870 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 28 for LOIs [2021-11-23 01:58:19,875 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:58:29,009 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4943#(and (= |timeShift_getWaterLevel_~retValue_acc~8#1| ~waterLevel~0) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| 2)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= |old(~waterLevel~0)| ~waterLevel~0) (<= 2 |timeShift_getWaterLevel_#res#1|) (= ~head~0.base 0) (= |#NULL.offset| 0) (= ~switchedOnBeforeTS~0 0) (<= |timeShift_getWaterLevel_~retValue_acc~8#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2021-11-23 01:58:29,009 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:58:29,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:58:29,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2021-11-23 01:58:29,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133792379] [2021-11-23 01:58:29,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:58:29,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 01:58:29,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:29,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 01:58:29,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 01:58:29,012 INFO L87 Difference]: Start difference. First operand 379 states and 467 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-23 01:58:29,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:29,601 INFO L93 Difference]: Finished difference Result 1310 states and 1701 transitions. [2021-11-23 01:58:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 01:58:29,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 78 [2021-11-23 01:58:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:29,610 INFO L225 Difference]: With dead ends: 1310 [2021-11-23 01:58:29,611 INFO L226 Difference]: Without dead ends: 921 [2021-11-23 01:58:29,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 184 SyntacticMatches, 19 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=221, Invalid=1759, Unknown=0, NotChecked=0, Total=1980 [2021-11-23 01:58:29,614 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 202 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:29,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 495 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 01:58:29,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-11-23 01:58:29,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 778. [2021-11-23 01:58:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 504 states have (on average 1.1984126984126984) internal successors, (604), 562 states have internal predecessors, (604), 140 states have call successors, (140), 118 states have call predecessors, (140), 133 states have return successors, (248), 138 states have call predecessors, (248), 140 states have call successors, (248) [2021-11-23 01:58:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 992 transitions. [2021-11-23 01:58:29,709 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 992 transitions. Word has length 78 [2021-11-23 01:58:29,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:29,712 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 992 transitions. [2021-11-23 01:58:29,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-23 01:58:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 992 transitions. [2021-11-23 01:58:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-23 01:58:29,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:29,720 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:58:29,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 01:58:29,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 01:58:29,936 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:58:29,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:29,937 INFO L85 PathProgramCache]: Analyzing trace with hash 681535356, now seen corresponding path program 1 times [2021-11-23 01:58:29,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:29,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619041820] [2021-11-23 01:58:29,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:29,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-23 01:58:30,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619041820] [2021-11-23 01:58:30,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619041820] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:58:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892120322] [2021-11-23 01:58:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:30,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:58:30,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:58:30,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:58:30,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 01:58:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:30,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 01:58:30,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:58:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 66 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 01:58:30,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:58:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-23 01:58:31,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892120322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:58:31,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1348979261] [2021-11-23 01:58:31,547 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2021-11-23 01:58:31,547 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:58:31,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:58:31,548 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:58:31,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:58:39,306 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 310 for LOIs [2021-11-23 01:58:39,369 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2021-11-23 01:58:39,844 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 42 for LOIs [2021-11-23 01:58:39,851 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 29 for LOIs [2021-11-23 01:58:39,904 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2021-11-23 01:58:40,064 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 58 for LOIs [2021-11-23 01:58:40,082 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:58:48,244 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8880#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (= |timeShift_getWaterLevel_~retValue_acc~8#1| ~waterLevel~0) (= ~head~0.offset 0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| 2)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 1) (<= ~methaneLevelCritical~0 0) (<= 0 ~head~0.base) (<= 0 ~methaneLevelCritical~0) (= |old(~waterLevel~0)| ~waterLevel~0) (<= 2 |timeShift_getWaterLevel_#res#1|) (<= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= ~switchedOnBeforeTS~0 0) (<= |timeShift_getWaterLevel_~retValue_acc~8#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 01:58:48,244 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:58:48,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:58:48,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 26 [2021-11-23 01:58:48,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432588688] [2021-11-23 01:58:48,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:58:48,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 01:58:48,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:48,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 01:58:48,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=3246, Unknown=0, NotChecked=0, Total=3660 [2021-11-23 01:58:48,248 INFO L87 Difference]: Start difference. First operand 778 states and 992 transitions. Second operand has 26 states, 25 states have (on average 5.32) internal successors, (133), 26 states have internal predecessors, (133), 14 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 14 states have call predecessors, (32), 13 states have call successors, (32) [2021-11-23 01:58:51,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:51,320 INFO L93 Difference]: Finished difference Result 1711 states and 2222 transitions. [2021-11-23 01:58:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-23 01:58:51,322 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.32) internal successors, (133), 26 states have internal predecessors, (133), 14 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 14 states have call predecessors, (32), 13 states have call successors, (32) Word has length 110 [2021-11-23 01:58:51,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:51,323 INFO L225 Difference]: With dead ends: 1711 [2021-11-23 01:58:51,324 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 01:58:51,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 301 SyntacticMatches, 13 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4958 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1452, Invalid=10980, Unknown=0, NotChecked=0, Total=12432 [2021-11-23 01:58:51,335 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 1022 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:51,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 738 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 01:58:51,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 01:58:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 01:58:51,336 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 01:58:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 01:58:51,337 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 110 [2021-11-23 01:58:51,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:51,337 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 01:58:51,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.32) internal successors, (133), 26 states have internal predecessors, (133), 14 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 14 states have call predecessors, (32), 13 states have call successors, (32) [2021-11-23 01:58:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 01:58:51,338 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 01:58:51,340 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 01:58:51,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 01:58:51,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:58:51,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 01:58:57,759 INFO L854 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 203 210) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (= ~switchedOnBeforeTS~0 0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2021-11-23 01:58:57,759 INFO L858 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 203 210) no Hoare annotation was computed. [2021-11-23 01:58:57,759 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 93 99) no Hoare annotation was computed. [2021-11-23 01:58:57,759 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 93 99) the Hoare annotation is: true [2021-11-23 01:58:57,759 INFO L854 garLoopResultBuilder]: At program point L141(line 141) the Hoare annotation is: (let ((.cse0 (not (<= ~waterLevel~0 2))) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (or .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse1))) [2021-11-23 01:58:57,759 INFO L854 garLoopResultBuilder]: At program point L137(line 137) the Hoare annotation is: (let ((.cse0 (not (<= ~waterLevel~0 2))) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (or .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse1))) [2021-11-23 01:58:57,759 INFO L858 garLoopResultBuilder]: For program point L135(lines 135 143) no Hoare annotation was computed. [2021-11-23 01:58:57,759 INFO L854 garLoopResultBuilder]: At program point L131(lines 131 148) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2021-11-23 01:58:57,760 INFO L854 garLoopResultBuilder]: At program point L146(line 146) the Hoare annotation is: (let ((.cse0 (not (<= ~waterLevel~0 2))) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or .cse0 (= ~switchedOnBeforeTS~0 0) .cse1) (or .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse1))) [2021-11-23 01:58:57,760 INFO L858 garLoopResultBuilder]: For program point L146-1(lines 127 151) no Hoare annotation was computed. [2021-11-23 01:58:57,760 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 127 151) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2021-11-23 01:58:57,760 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 127 151) no Hoare annotation was computed. [2021-11-23 01:58:57,760 INFO L858 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 222 230) no Hoare annotation was computed. [2021-11-23 01:58:57,760 INFO L861 garLoopResultBuilder]: At program point isPumpRunningENTRY(lines 222 230) the Hoare annotation is: true [2021-11-23 01:58:57,760 INFO L861 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 827 838) the Hoare annotation is: true [2021-11-23 01:58:57,761 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 827 838) no Hoare annotation was computed. [2021-11-23 01:58:57,761 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 905 934) no Hoare annotation was computed. [2021-11-23 01:58:57,761 INFO L858 garLoopResultBuilder]: For program point L926(line 926) no Hoare annotation was computed. [2021-11-23 01:58:57,761 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 905 934) the Hoare annotation is: true [2021-11-23 01:58:57,761 INFO L858 garLoopResultBuilder]: For program point L919(lines 919 923) no Hoare annotation was computed. [2021-11-23 01:58:57,761 INFO L861 garLoopResultBuilder]: At program point L919-1(lines 919 923) the Hoare annotation is: true [2021-11-23 01:58:57,761 INFO L861 garLoopResultBuilder]: At program point L915-2(lines 915 929) the Hoare annotation is: true [2021-11-23 01:58:57,761 INFO L861 garLoopResultBuilder]: At program point L911(line 911) the Hoare annotation is: true [2021-11-23 01:58:57,762 INFO L858 garLoopResultBuilder]: For program point L911-1(line 911) no Hoare annotation was computed. [2021-11-23 01:58:57,762 INFO L861 garLoopResultBuilder]: At program point L930(lines 905 934) the Hoare annotation is: true [2021-11-23 01:58:57,762 INFO L854 garLoopResultBuilder]: At program point L159(line 159) the Hoare annotation is: (let ((.cse0 (not (<= |old(~waterLevel~0)| 2))) (.cse1 (not (= ~pumpRunning~0 0))) (.cse2 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse3 (< 0 |old(~waterLevel~0)|)) (.cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (not (<= |old(~waterLevel~0)| 1)) (and .cse1 (<= ~waterLevel~0 0) (or (and .cse2 .cse3) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse4)) (or .cse0 (and .cse1 .cse2 .cse3 .cse4) (not (<= 2 |old(~waterLevel~0)|))))) [2021-11-23 01:58:57,762 INFO L858 garLoopResultBuilder]: For program point L159-1(line 159) no Hoare annotation was computed. [2021-11-23 01:58:57,762 INFO L854 garLoopResultBuilder]: At program point L345(line 345) the Hoare annotation is: (let ((.cse6 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse8 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse5 (= ~pumpRunning~0 0)) (.cse9 (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) .cse6))) (.cse7 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| ~waterLevel~0))) (let ((.cse0 (and (not (= ~switchedOnBeforeTS~0 0)) .cse5 .cse9 .cse7)) (.cse1 (and (not .cse5) .cse9 .cse7 .cse8)) (.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= |old(~waterLevel~0)| 2))) (.cse3 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 .cse2 .cse3) (or (not (<= |old(~waterLevel~0)| 1)) .cse4 (and .cse5 .cse6 .cse7 .cse8)) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 .cse1 .cse2 (= |old(~switchedOnBeforeTS~0)| 0)) (or .cse4 .cse2 .cse3))))) [2021-11-23 01:58:57,762 INFO L858 garLoopResultBuilder]: For program point L345-1(line 345) no Hoare annotation was computed. [2021-11-23 01:58:57,762 INFO L854 garLoopResultBuilder]: At program point L172(line 172) the Hoare annotation is: (let ((.cse0 (not (<= |old(~waterLevel~0)| 2))) (.cse1 (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) (and (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 (= |old(~switchedOnBeforeTS~0)| 0)) (or .cse1 .cse0 (not (<= 2 |old(~waterLevel~0)|))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) .cse1))) [2021-11-23 01:58:57,763 INFO L854 garLoopResultBuilder]: At program point L172-1(lines 153 177) the Hoare annotation is: (let ((.cse6 (= ~pumpRunning~0 0)) (.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (not (<= |old(~waterLevel~0)| 1))) (.cse7 (not .cse4)) (.cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse5 (not (= ~switchedOnBeforeTS~0 0))) (.cse8 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse9 (not (<= |old(~waterLevel~0)| 2))) (.cse2 (not .cse6)) (.cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (and (or .cse0 .cse1 (and .cse2 .cse3) .cse4 (and .cse5 .cse6)) (or .cse1 .cse7 (and .cse6 .cse3)) (or .cse7 .cse8 .cse9) (or .cse0 (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) .cse8) .cse9 (= |old(~switchedOnBeforeTS~0)| 0)) (or (and .cse5 .cse6 (= ~waterLevel~0 1)) .cse8 .cse9 (and .cse2 (<= ~waterLevel~0 1) (<= 1 ~waterLevel~0) .cse3) (not (<= 2 |old(~waterLevel~0)|)))))) [2021-11-23 01:58:57,763 INFO L858 garLoopResultBuilder]: For program point L73-2(lines 69 91) no Hoare annotation was computed. [2021-11-23 01:58:57,763 INFO L854 garLoopResultBuilder]: At program point L330(line 330) the Hoare annotation is: (let ((.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (not (= ~switchedOnBeforeTS~0 0))) (.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse5 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse2 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse6 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 .cse1 (not (<= 2 |old(~waterLevel~0)|))) (or .cse2 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (or .cse3 (= ~pumpRunning~0 0) .cse1) (or .cse4 .cse3 .cse1 .cse5) (or .cse6 .cse3 .cse0) (or .cse4 .cse2 .cse1 .cse5) (or .cse2 .cse6 .cse0))) [2021-11-23 01:58:57,763 INFO L854 garLoopResultBuilder]: At program point L330-1(line 330) the Hoare annotation is: (let ((.cse3 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse0 (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__2_#t~ret19#1|)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (<= |old(~waterLevel~0)| 2)))) (and (or (and .cse0 .cse1) .cse2 (not (<= 2 |old(~waterLevel~0)|))) (or .cse3 .cse1 .cse2) (or .cse3 (and (not (= ~switchedOnBeforeTS~0 0)) .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse2 (= |old(~switchedOnBeforeTS~0)| 0)) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse0 .cse1) .cse2))) [2021-11-23 01:58:57,763 INFO L858 garLoopResultBuilder]: For program point L161(lines 161 169) no Hoare annotation was computed. [2021-11-23 01:58:57,763 INFO L858 garLoopResultBuilder]: For program point L157(lines 157 174) no Hoare annotation was computed. [2021-11-23 01:58:57,764 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 357) no Hoare annotation was computed. [2021-11-23 01:58:57,764 INFO L858 garLoopResultBuilder]: For program point L343(lines 343 360) no Hoare annotation was computed. [2021-11-23 01:58:57,764 INFO L854 garLoopResultBuilder]: At program point L343-1(lines 335 363) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse5 (not (= ~switchedOnBeforeTS~0 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~6#1| ~waterLevel~0)) (.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (and (<= 2 ~waterLevel~0) .cse0) .cse1 (and .cse2 .cse0 .cse3 .cse4)) (let ((.cse6 (or .cse0 (= ~waterLevel~0 1)))) (or (and .cse0 .cse3) (and .cse5 .cse2 .cse6 .cse3) .cse1 (and .cse5 .cse6 .cse3 .cse4) (not (<= 2 |old(~waterLevel~0)|)))) (let ((.cse7 (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) .cse0)))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and .cse5 .cse7 .cse3 .cse4) (and .cse5 .cse2 .cse7 .cse3) .cse1 (= |old(~switchedOnBeforeTS~0)| 0))))) [2021-11-23 01:58:57,764 INFO L854 garLoopResultBuilder]: At program point L1008(line 1008) the Hoare annotation is: (let ((.cse0 (not (<= |old(~waterLevel~0)| 1)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 0))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0) (or (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2021-11-23 01:58:57,764 INFO L858 garLoopResultBuilder]: For program point L348(lines 348 354) no Hoare annotation was computed. [2021-11-23 01:58:57,764 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 66 92) the Hoare annotation is: (let ((.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (not (= ~switchedOnBeforeTS~0 0))) (.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse5 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse2 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse6 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 .cse1 (not (<= 2 |old(~waterLevel~0)|))) (or .cse2 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (or .cse3 (= ~pumpRunning~0 0) .cse1) (or .cse4 .cse3 .cse1 .cse5) (or .cse6 .cse3 .cse0) (or .cse4 .cse2 .cse1 .cse5) (or .cse2 .cse6 .cse0))) [2021-11-23 01:58:57,764 INFO L854 garLoopResultBuilder]: At program point L80-1(lines 80 86) the Hoare annotation is: (let ((.cse9 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse8 (= ~pumpRunning~0 0)) (.cse5 (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) .cse9))) (.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse3)) (.cse1 (and (<= ~waterLevel~0 2) .cse9)) (.cse7 (and (not (= ~switchedOnBeforeTS~0 0)) .cse8 .cse5)) (.cse2 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (not .cse8)) (.cse6 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (and (or .cse0 .cse1 .cse2) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse3 (and .cse4 .cse5 .cse6) .cse7 .cse2) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (and .cse8 .cse6)) (or .cse1 .cse7 .cse2 (and .cse4 (<= ~waterLevel~0 1) (<= 1 ~waterLevel~0) .cse6) (not (<= 2 |old(~waterLevel~0)|))))))) [2021-11-23 01:58:57,765 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 66 92) no Hoare annotation was computed. [2021-11-23 01:58:57,765 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1008) no Hoare annotation was computed. [2021-11-23 01:58:57,765 INFO L854 garLoopResultBuilder]: At program point L167(line 167) the Hoare annotation is: (let ((.cse0 (not (<= |old(~waterLevel~0)| 2))) (.cse1 (not (= ~pumpRunning~0 0))) (.cse2 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse3 (< 0 |old(~waterLevel~0)|)) (.cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (not (<= |old(~waterLevel~0)| 1)) (and .cse1 (<= ~waterLevel~0 0) (or (and .cse2 .cse3) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse4)) (or .cse0 (and .cse1 .cse2 .cse3 .cse4) (not (<= 2 |old(~waterLevel~0)|))))) [2021-11-23 01:58:57,765 INFO L854 garLoopResultBuilder]: At program point L163(line 163) the Hoare annotation is: (let ((.cse1 (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0)))) (.cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse0 (not (<= |old(~waterLevel~0)| 2)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and (not (= ~switchedOnBeforeTS~0 0)) .cse1 .cse2) .cse0) (or (and (not (= ~pumpRunning~0 0)) .cse1 .cse2) .cse0 (not (<= 2 |old(~waterLevel~0)|))))) [2021-11-23 01:58:57,765 INFO L854 garLoopResultBuilder]: At program point L990(lines 990 997) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) [2021-11-23 01:58:57,765 INFO L854 garLoopResultBuilder]: At program point L416-2(lines 408 421) the Hoare annotation is: (let ((.cse1 (<= ~waterLevel~0 1)) (.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (= ~pumpRunning~0 0) .cse1 .cse0))) [2021-11-23 01:58:57,765 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 01:58:57,766 INFO L861 garLoopResultBuilder]: At program point L990-2(lines 990 997) the Hoare annotation is: true [2021-11-23 01:58:57,766 INFO L858 garLoopResultBuilder]: For program point L379(lines 378 425) no Hoare annotation was computed. [2021-11-23 01:58:57,766 INFO L854 garLoopResultBuilder]: At program point L400(line 400) the Hoare annotation is: (let ((.cse1 (<= ~waterLevel~0 1)) (.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (= ~pumpRunning~0 0) .cse1 .cse0))) [2021-11-23 01:58:57,766 INFO L861 garLoopResultBuilder]: At program point L429(lines 368 433) the Hoare annotation is: true [2021-11-23 01:58:57,766 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 394) no Hoare annotation was computed. [2021-11-23 01:58:57,766 INFO L858 garLoopResultBuilder]: For program point L388-1(lines 388 394) no Hoare annotation was computed. [2021-11-23 01:58:57,766 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 01:58:57,766 INFO L854 garLoopResultBuilder]: At program point L426(lines 377 427) the Hoare annotation is: false [2021-11-23 01:58:57,766 INFO L858 garLoopResultBuilder]: For program point L398(lines 398 404) no Hoare annotation was computed. [2021-11-23 01:58:57,767 INFO L854 garLoopResultBuilder]: At program point L398-1(lines 398 404) the Hoare annotation is: (let ((.cse1 (<= ~waterLevel~0 1)) (.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (= ~pumpRunning~0 0) .cse1 .cse0))) [2021-11-23 01:58:57,767 INFO L854 garLoopResultBuilder]: At program point L423(lines 378 425) the Hoare annotation is: (let ((.cse1 (<= ~waterLevel~0 1)) (.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (= ~pumpRunning~0 0) .cse1 .cse0))) [2021-11-23 01:58:57,767 INFO L854 garLoopResultBuilder]: At program point L390(line 390) the Hoare annotation is: (let ((.cse1 (<= ~waterLevel~0 1)) (.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (= ~pumpRunning~0 0) .cse1 .cse0))) [2021-11-23 01:58:57,767 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 101 125) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2021-11-23 01:58:57,767 INFO L854 garLoopResultBuilder]: At program point L120(line 120) the Hoare annotation is: (let ((.cse0 (not (<= ~waterLevel~0 2))) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (or .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse1))) [2021-11-23 01:58:57,767 INFO L858 garLoopResultBuilder]: For program point L120-1(lines 101 125) no Hoare annotation was computed. [2021-11-23 01:58:57,767 INFO L854 garLoopResultBuilder]: At program point L191(line 191) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (or (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 1))) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2021-11-23 01:58:57,767 INFO L854 garLoopResultBuilder]: At program point L191-1(line 191) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (or (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 1))) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2021-11-23 01:58:57,768 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 101 125) no Hoare annotation was computed. [2021-11-23 01:58:57,768 INFO L854 garLoopResultBuilder]: At program point L115(line 115) the Hoare annotation is: (let ((.cse0 (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 0)) (.cse1 (not (<= ~waterLevel~0 2))) (.cse2 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or (and (or (<= 2 ~waterLevel~0) .cse0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse1 .cse2) (or .cse1 (= ~switchedOnBeforeTS~0 0) .cse2) (or .cse0 (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 1) .cse1 .cse2))) [2021-11-23 01:58:57,768 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 117) no Hoare annotation was computed. [2021-11-23 01:58:57,768 INFO L854 garLoopResultBuilder]: At program point L105(lines 105 122) the Hoare annotation is: (or (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2021-11-23 01:58:57,768 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 815 826) no Hoare annotation was computed. [2021-11-23 01:58:57,768 INFO L854 garLoopResultBuilder]: At program point waterRiseENTRY(lines 815 826) the Hoare annotation is: (let ((.cse0 (not (<= |old(~waterLevel~0)| 1))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 (not (= ~pumpRunning~0 0)) .cse1) (or .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse1))) [2021-11-23 01:58:57,768 INFO L861 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 211 221) the Hoare annotation is: true [2021-11-23 01:58:57,768 INFO L858 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 211 221) no Hoare annotation was computed. [2021-11-23 01:58:57,772 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:58:57,773 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 01:58:57,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:58:57 BoogieIcfgContainer [2021-11-23 01:58:57,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 01:58:57,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:58:57,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:58:57,812 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:58:57,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:07" (3/4) ... [2021-11-23 01:58:57,815 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 01:58:57,820 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2021-11-23 01:58:57,820 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-11-23 01:58:57,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-11-23 01:58:57,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-11-23 01:58:57,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-11-23 01:58:57,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 01:58:57,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-11-23 01:58:57,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2021-11-23 01:58:57,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2021-11-23 01:58:57,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2021-11-23 01:58:57,833 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 84 nodes and edges [2021-11-23 01:58:57,833 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2021-11-23 01:58:57,834 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-23 01:58:57,835 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 01:58:57,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 01:58:57,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 01:58:57,837 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 01:58:57,863 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == aux-isPumpRunning()-aux && \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || ((!(switchedOnBeforeTS == 0) && pumpRunning == aux-isPumpRunning()-aux) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && ((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) [2021-11-23 01:58:57,864 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || (waterLevel <= 2 && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || \old(pumpRunning) == 0) || ((!(pumpRunning == 0) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && pumpRunning == switchedOnBeforeTS)) || ((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)))) || !(\old(waterLevel) <= 2))) && ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && pumpRunning == switchedOnBeforeTS))) && (((((waterLevel <= 2 && \old(waterLevel) == waterLevel) || ((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)))) || !(\old(waterLevel) <= 2)) || (((!(pumpRunning == 0) && waterLevel <= 1) && 1 <= waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel))) [2021-11-23 01:58:57,864 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || (2 <= waterLevel && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) && (((((\old(waterLevel) == waterLevel && tmp == waterLevel) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || (((!(switchedOnBeforeTS == 0) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel)))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || (((!(switchedOnBeforeTS == 0) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0) [2021-11-23 01:58:57,865 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) && (!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1))) && (!(\old(waterLevel) <= 2) || !(2 <= \old(waterLevel))) [2021-11-23 01:58:57,865 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || (!(pumpRunning == 0) && pumpRunning == switchedOnBeforeTS)) || \old(pumpRunning) == 0) || (!(switchedOnBeforeTS == 0) && pumpRunning == 0)) && ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && pumpRunning == switchedOnBeforeTS))) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && ((((((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel == 1) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || (((!(pumpRunning == 0) && waterLevel <= 1) && 1 <= waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel))) [2021-11-23 01:58:57,865 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(waterLevel <= 2) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning)) [2021-11-23 01:58:57,866 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(waterLevel <= 2) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning)) [2021-11-23 01:58:57,867 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(waterLevel <= 2) || (((pumpRunning == 0 && 2 <= waterLevel) && pumpRunning == switchedOnBeforeTS) && (tmp == 0 || tmp == 1))) || !(switchedOnBeforeTS == \old(pumpRunning)) [2021-11-23 01:58:57,925 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 01:58:57,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:58:57,926 INFO L158 Benchmark]: Toolchain (without parser) took 51953.43ms. Allocated memory was 90.2MB in the beginning and 570.4MB in the end (delta: 480.2MB). Free memory was 66.8MB in the beginning and 407.2MB in the end (delta: -340.3MB). Peak memory consumption was 138.3MB. Max. memory is 16.1GB. [2021-11-23 01:58:57,926 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 63.5MB in the beginning and 63.4MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:58:57,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 524.47ms. Allocated memory is still 90.2MB. Free memory was 66.6MB in the beginning and 57.1MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:58:57,927 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.76ms. Allocated memory is still 90.2MB. Free memory was 56.8MB in the beginning and 54.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:58:57,928 INFO L158 Benchmark]: Boogie Preprocessor took 58.17ms. Allocated memory is still 90.2MB. Free memory was 54.2MB in the beginning and 52.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:58:57,928 INFO L158 Benchmark]: RCFGBuilder took 711.49ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.5MB in the beginning and 83.9MB in the end (delta: -31.4MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2021-11-23 01:58:57,929 INFO L158 Benchmark]: TraceAbstraction took 50446.08ms. Allocated memory was 109.1MB in the beginning and 570.4MB in the end (delta: 461.4MB). Free memory was 83.9MB in the beginning and 414.5MB in the end (delta: -330.6MB). Peak memory consumption was 353.3MB. Max. memory is 16.1GB. [2021-11-23 01:58:57,930 INFO L158 Benchmark]: Witness Printer took 114.19ms. Allocated memory is still 570.4MB. Free memory was 414.5MB in the beginning and 407.2MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 01:58:57,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 63.5MB in the beginning and 63.4MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 524.47ms. Allocated memory is still 90.2MB. Free memory was 66.6MB in the beginning and 57.1MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.76ms. Allocated memory is still 90.2MB. Free memory was 56.8MB in the beginning and 54.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.17ms. Allocated memory is still 90.2MB. Free memory was 54.2MB in the beginning and 52.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 711.49ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.5MB in the beginning and 83.9MB in the end (delta: -31.4MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * TraceAbstraction took 50446.08ms. Allocated memory was 109.1MB in the beginning and 570.4MB in the end (delta: 461.4MB). Free memory was 83.9MB in the beginning and 414.5MB in the end (delta: -330.6MB). Peak memory consumption was 353.3MB. Max. memory is 16.1GB. * Witness Printer took 114.19ms. Allocated memory is still 570.4MB. Free memory was 414.5MB in the beginning and 407.2MB in the end (delta: 7.3MB). 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: 1008]: 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 11 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.3s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1764 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1739 mSDsluCounter, 2723 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2377 mSDsCounter, 1149 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3496 IncrementalHoareTripleChecker+Invalid, 4645 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1149 mSolverCounterUnsat, 766 mSDtfsCounter, 3496 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 734 GetRequests, 506 SyntacticMatches, 32 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5895 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=778occurred in iteration=7, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 214 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 1728 PreInvPairs, 2177 NumberOfFragments, 1622 HoareAnnotationTreeSize, 1728 FomulaSimplifications, 4560 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 44 FomulaSimplificationsInter, 35497 FormulaSimplificationTreeSizeReductionInter, 5.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 589 NumberOfCodeBlocks, 589 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 765 ConstructedInterpolants, 0 QuantifiedInterpolants, 2443 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1096 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 365/404 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: 330]: Loop Invariant Derived loop invariant: (((((pumpRunning == aux-isPumpRunning()-aux && \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || ((!(switchedOnBeforeTS == 0) && pumpRunning == aux-isPumpRunning()-aux) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && ((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) - InvariantResult [Line: 378]: Loop Invariant Derived loop invariant: (((2 <= waterLevel && splverifierCounter == 0) && waterLevel <= 2) || ((waterLevel <= 1 && splverifierCounter == 0) && pumpRunning == switchedOnBeforeTS)) || ((pumpRunning == 0 && waterLevel <= 1) && splverifierCounter == 0) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: (!(waterLevel <= 2) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning)) - InvariantResult [Line: 990]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1008]: Loop Invariant Derived loop invariant: ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) && (!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1))) && (!(\old(waterLevel) <= 2) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 915]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 905]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || (waterLevel <= 2 && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || \old(pumpRunning) == 0) || ((!(pumpRunning == 0) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && pumpRunning == switchedOnBeforeTS)) || ((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)))) || !(\old(waterLevel) <= 2))) && ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && pumpRunning == switchedOnBeforeTS))) && (((((waterLevel <= 2 && \old(waterLevel) == waterLevel) || ((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)))) || !(\old(waterLevel) <= 2)) || (((!(pumpRunning == 0) && waterLevel <= 1) && 1 <= waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 211]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 990]: Loop Invariant Derived loop invariant: (pumpRunning == 0 && waterLevel == 1) && pumpRunning == switchedOnBeforeTS - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: (!(waterLevel <= 2) || (((pumpRunning == 0 && 2 <= waterLevel) && pumpRunning == switchedOnBeforeTS) && (tmp == 0 || tmp == 1))) || !(switchedOnBeforeTS == \old(pumpRunning)) - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: (!(waterLevel <= 2) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning)) - InvariantResult [Line: 377]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 368]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 335]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || (2 <= waterLevel && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) && (((((\old(waterLevel) == waterLevel && tmp == waterLevel) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || (((!(switchedOnBeforeTS == 0) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel)))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || (((!(switchedOnBeforeTS == 0) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0) - InvariantResult [Line: 398]: Loop Invariant Derived loop invariant: (((2 <= waterLevel && splverifierCounter == 0) && waterLevel <= 2) || ((waterLevel <= 1 && splverifierCounter == 0) && pumpRunning == switchedOnBeforeTS)) || ((pumpRunning == 0 && waterLevel <= 1) && splverifierCounter == 0) - InvariantResult [Line: 153]: Loop Invariant Derived loop invariant: (((((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || (!(pumpRunning == 0) && pumpRunning == switchedOnBeforeTS)) || \old(pumpRunning) == 0) || (!(switchedOnBeforeTS == 0) && pumpRunning == 0)) && ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && pumpRunning == switchedOnBeforeTS))) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && ((((((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel == 1) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || (((!(pumpRunning == 0) && waterLevel <= 1) && 1 <= waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel))) RESULT: Ultimate proved your program to be correct! [2021-11-23 01:58:58,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_421c052f-a5bb-40f4-8410-767c36846cba/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