./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9 --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 f18c518732faf536b365bed3360055c2f4eb753a861011ef1bbe74f5b721db8d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 18:57:30,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:57:30,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:57:30,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:57:30,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:57:30,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:57:30,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:57:30,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:57:30,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:57:30,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:57:30,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:57:30,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:57:30,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:57:30,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:57:30,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:57:30,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:57:30,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:57:30,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:57:30,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:57:30,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:57:30,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:57:30,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:57:30,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:57:30,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:57:30,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:57:30,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:57:30,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:57:30,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:57:30,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:57:30,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:57:30,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:57:30,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:57:30,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:57:30,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:57:30,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:57:30,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:57:30,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:57:30,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:57:30,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:57:30,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:57:30,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:57:30,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 18:57:31,007 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:57:31,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:57:31,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 18:57:31,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 18:57:31,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:57:31,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 18:57:31,010 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 18:57:31,010 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 18:57:31,010 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 18:57:31,011 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 18:57:31,011 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 18:57:31,012 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 18:57:31,012 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 18:57:31,012 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 18:57:31,013 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 18:57:31,013 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 18:57:31,013 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 18:57:31,014 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 18:57:31,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:57:31,015 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 18:57:31,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 18:57:31,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 18:57:31,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:57:31,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:57:31,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:57:31,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:57:31,017 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 18:57:31,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:57:31,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:57:31,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:57:31,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:57:31,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 18:57:31,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:57:31,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:57:31,020 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 18:57:31,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:57:31,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:57:31,021 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 18:57:31,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 18:57:31,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:57:31,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 18:57:31,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f18c518732faf536b365bed3360055c2f4eb753a861011ef1bbe74f5b721db8d [2022-11-20 18:57:31,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:57:31,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:57:31,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:57:31,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:57:31,407 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:57:31,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c [2022-11-20 18:57:34,699 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:57:34,979 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:57:34,983 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c [2022-11-20 18:57:35,014 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/data/16287b96c/878a419d5d8c4fcb9a41c29c979ec1f7/FLAG3a0ac00f0 [2022-11-20 18:57:35,030 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/data/16287b96c/878a419d5d8c4fcb9a41c29c979ec1f7 [2022-11-20 18:57:35,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:57:35,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:57:35,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:57:35,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:57:35,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:57:35,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bec8e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35, skipping insertion in model container [2022-11-20 18:57:35,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:57:35,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:57:35,444 WARN L237 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_acc666b7-839c-415a-b6c6-436783977714/sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c[18005,18018] [2022-11-20 18:57:35,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:57:35,464 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:57:35,586 WARN L237 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_acc666b7-839c-415a-b6c6-436783977714/sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c[18005,18018] [2022-11-20 18:57:35,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:57:35,616 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:57:35,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35 WrapperNode [2022-11-20 18:57:35,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:57:35,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:57:35,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:57:35,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:57:35,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,708 INFO L138 Inliner]: procedures = 57, calls = 101, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 205 [2022-11-20 18:57:35,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:57:35,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:57:35,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:57:35,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:57:35,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,754 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:57:35,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:57:35,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:57:35,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:57:35,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (1/1) ... [2022-11-20 18:57:35,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:57:35,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:57:35,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 18:57:35,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 18:57:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 18:57:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-20 18:57:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-20 18:57:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 18:57:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 18:57:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 18:57:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 18:57:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-20 18:57:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-20 18:57:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2022-11-20 18:57:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2022-11-20 18:57:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 18:57:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-20 18:57:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-20 18:57:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:57:35,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:57:35,959 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:57:35,962 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 18:57:36,379 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 18:57:36,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 18:57:36,519 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 18:57:36,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:36 BoogieIcfgContainer [2022-11-20 18:57:36,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 18:57:36,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 18:57:36,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 18:57:36,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 18:57:36,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:57:35" (1/3) ... [2022-11-20 18:57:36,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d55354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:36, skipping insertion in model container [2022-11-20 18:57:36,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:35" (2/3) ... [2022-11-20 18:57:36,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d55354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:36, skipping insertion in model container [2022-11-20 18:57:36,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:36" (3/3) ... [2022-11-20 18:57:36,550 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product44.cil.c [2022-11-20 18:57:36,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 18:57:36,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 18:57:36,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 18:57:36,638 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3937476b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 18:57:36,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 18:57:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 18:57:36,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 18:57:36,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:36,658 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:57:36,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:36,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:36,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1325256327, now seen corresponding path program 1 times [2022-11-20 18:57:36,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:57:36,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633262469] [2022-11-20 18:57:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:57:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:57:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 18:57:36,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:57:36,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633262469] [2022-11-20 18:57:36,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633262469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:57:36,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:57:36,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 18:57:36,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15797859] [2022-11-20 18:57:36,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:57:36,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 18:57:36,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:57:37,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 18:57:37,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 18:57:37,022 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) 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) [2022-11-20 18:57:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:57:37,116 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-11-20 18:57:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 18:57:37,125 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 [2022-11-20 18:57:37,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:57:37,134 INFO L225 Difference]: With dead ends: 100 [2022-11-20 18:57:37,134 INFO L226 Difference]: Without dead ends: 46 [2022-11-20 18:57:37,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 18:57:37,142 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 18:57:37,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 18:57:37,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-20 18:57:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-20 18:57:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3) internal successors, (39), 35 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 18:57:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-11-20 18:57:37,185 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 21 [2022-11-20 18:57:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:57:37,186 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-11-20 18:57:37,186 INFO L496 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) [2022-11-20 18:57:37,186 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-11-20 18:57:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 18:57:37,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:37,190 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:57:37,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 18:57:37,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1801005259, now seen corresponding path program 1 times [2022-11-20 18:57:37,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:57:37,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168861178] [2022-11-20 18:57:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:57:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:57:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 18:57:37,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:57:37,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168861178] [2022-11-20 18:57:37,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168861178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:57:37,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:57:37,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 18:57:37,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478846316] [2022-11-20 18:57:37,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:57:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 18:57:37,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:57:37,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 18:57:37,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 18:57:37,374 INFO L87 Difference]: Start difference. First operand 46 states and 58 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) [2022-11-20 18:57:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:57:37,452 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2022-11-20 18:57:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 18:57:37,456 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 [2022-11-20 18:57:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:57:37,459 INFO L225 Difference]: With dead ends: 69 [2022-11-20 18:57:37,459 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 18:57:37,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 18:57:37,461 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 18:57:37,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 18:57:37,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 18:57:37,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-20 18:57:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 18:57:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-20 18:57:37,484 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 22 [2022-11-20 18:57:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:57:37,485 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-20 18:57:37,485 INFO L496 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) [2022-11-20 18:57:37,486 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-20 18:57:37,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 18:57:37,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:37,489 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:57:37,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 18:57:37,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:37,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1801776207, now seen corresponding path program 1 times [2022-11-20 18:57:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:57:37,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496071632] [2022-11-20 18:57:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:37,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:57:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:57:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 18:57:37,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:57:37,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496071632] [2022-11-20 18:57:37,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496071632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:57:37,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:57:37,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 18:57:37,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535274647] [2022-11-20 18:57:37,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:57:37,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 18:57:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:57:37,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 18:57:37,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 18:57:37,743 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 18:57:38,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:57:38,306 INFO L93 Difference]: Finished difference Result 145 states and 181 transitions. [2022-11-20 18:57:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 18:57:38,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-11-20 18:57:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:57:38,309 INFO L225 Difference]: With dead ends: 145 [2022-11-20 18:57:38,309 INFO L226 Difference]: Without dead ends: 109 [2022-11-20 18:57:38,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-20 18:57:38,311 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 77 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 18:57:38,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 289 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 18:57:38,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-20 18:57:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 76. [2022-11-20 18:57:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.26) internal successors, (63), 56 states have internal predecessors, (63), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (15), 12 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-20 18:57:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2022-11-20 18:57:38,376 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 24 [2022-11-20 18:57:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:57:38,377 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2022-11-20 18:57:38,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 18:57:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2022-11-20 18:57:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 18:57:38,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:38,380 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:57:38,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 18:57:38,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:38,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:38,383 INFO L85 PathProgramCache]: Analyzing trace with hash 735581937, now seen corresponding path program 1 times [2022-11-20 18:57:38,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:57:38,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589038123] [2022-11-20 18:57:38,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:38,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:57:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:57:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 18:57:38,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:57:38,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589038123] [2022-11-20 18:57:38,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589038123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:57:38,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:57:38,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 18:57:38,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139638676] [2022-11-20 18:57:38,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:57:38,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 18:57:38,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:57:38,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 18:57:38,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:57:38,737 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 18:57:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:57:38,908 INFO L93 Difference]: Finished difference Result 228 states and 284 transitions. [2022-11-20 18:57:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 18:57:38,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-11-20 18:57:38,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:57:38,911 INFO L225 Difference]: With dead ends: 228 [2022-11-20 18:57:38,911 INFO L226 Difference]: Without dead ends: 154 [2022-11-20 18:57:38,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 18:57:38,914 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 73 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 18:57:38,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 160 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 18:57:38,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-20 18:57:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 118. [2022-11-20 18:57:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 88 states have internal predecessors, (100), 19 states have call successors, (19), 17 states have call predecessors, (19), 19 states have return successors, (25), 17 states have call predecessors, (25), 19 states have call successors, (25) [2022-11-20 18:57:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 144 transitions. [2022-11-20 18:57:38,941 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 144 transitions. Word has length 27 [2022-11-20 18:57:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:57:38,941 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 144 transitions. [2022-11-20 18:57:38,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 18:57:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2022-11-20 18:57:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 18:57:38,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:38,944 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:57:38,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 18:57:38,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:38,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1743544795, now seen corresponding path program 1 times [2022-11-20 18:57:38,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:57:38,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590908265] [2022-11-20 18:57:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:38,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:57:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:57:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 18:57:39,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:57:39,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590908265] [2022-11-20 18:57:39,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590908265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:57:39,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:57:39,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 18:57:39,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228027420] [2022-11-20 18:57:39,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:57:39,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 18:57:39,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:57:39,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 18:57:39,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 18:57:39,333 INFO L87 Difference]: Start difference. First operand 118 states and 144 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 18:57:39,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:57:39,832 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2022-11-20 18:57:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 18:57:39,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-11-20 18:57:39,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:57:39,836 INFO L225 Difference]: With dead ends: 289 [2022-11-20 18:57:39,836 INFO L226 Difference]: Without dead ends: 212 [2022-11-20 18:57:39,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-20 18:57:39,838 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 140 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 18:57:39,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 236 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 18:57:39,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-20 18:57:39,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 161. [2022-11-20 18:57:39,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 107 states have (on average 1.2523364485981308) internal successors, (134), 121 states have internal predecessors, (134), 26 states have call successors, (26), 23 states have call predecessors, (26), 27 states have return successors, (34), 24 states have call predecessors, (34), 26 states have call successors, (34) [2022-11-20 18:57:39,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2022-11-20 18:57:39,871 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 30 [2022-11-20 18:57:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:57:39,872 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2022-11-20 18:57:39,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 18:57:39,873 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2022-11-20 18:57:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 18:57:39,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:39,875 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-20 18:57:39,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 18:57:39,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:39,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:39,878 INFO L85 PathProgramCache]: Analyzing trace with hash 521581281, now seen corresponding path program 1 times [2022-11-20 18:57:39,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:57:39,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968859161] [2022-11-20 18:57:39,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:39,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:57:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:57:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 18:57:40,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:57:40,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968859161] [2022-11-20 18:57:40,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968859161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 18:57:40,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174707878] [2022-11-20 18:57:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:40,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:57:40,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:57:40,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:57:40,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 18:57:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:57:40,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 18:57:40,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:57:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:57:40,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:57:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 18:57:40,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174707878] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:57:40,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1678203321] [2022-11-20 18:57:40,942 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-20 18:57:40,943 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 18:57:40,949 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 18:57:40,957 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 18:57:40,957 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 18:57:43,956 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 52 for LOIs [2022-11-20 18:57:44,287 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 22 for LOIs [2022-11-20 18:57:44,289 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 18:57:48,960 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2376#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (<= ~pumpRunning~0 2147483647) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2)) (= ~methaneLevelCritical~0 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (<= 1 |old(~waterLevel~0)|) (= ~head~0.base 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483647) (<= 0 ~waterLevel~0) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 18:57:48,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 18:57:48,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 18:57:48,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 17 [2022-11-20 18:57:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339586631] [2022-11-20 18:57:48,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 18:57:48,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 18:57:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:57:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 18:57:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1436, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 18:57:48,964 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-20 18:57:51,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:57:51,296 INFO L93 Difference]: Finished difference Result 603 states and 779 transitions. [2022-11-20 18:57:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 18:57:51,297 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 44 [2022-11-20 18:57:51,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:57:51,301 INFO L225 Difference]: With dead ends: 603 [2022-11-20 18:57:51,301 INFO L226 Difference]: Without dead ends: 509 [2022-11-20 18:57:51,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=620, Invalid=4350, Unknown=0, NotChecked=0, Total=4970 [2022-11-20 18:57:51,306 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 428 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 18:57:51,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 520 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 18:57:51,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-20 18:57:51,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 337. [2022-11-20 18:57:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 224 states have (on average 1.21875) internal successors, (273), 254 states have internal predecessors, (273), 53 states have call successors, (53), 49 states have call predecessors, (53), 59 states have return successors, (90), 51 states have call predecessors, (90), 53 states have call successors, (90) [2022-11-20 18:57:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 416 transitions. [2022-11-20 18:57:51,373 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 416 transitions. Word has length 44 [2022-11-20 18:57:51,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:57:51,373 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 416 transitions. [2022-11-20 18:57:51,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-20 18:57:51,374 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 416 transitions. [2022-11-20 18:57:51,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 18:57:51,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:51,378 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:57:51,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 18:57:51,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 18:57:51,593 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:51,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:51,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1816178952, now seen corresponding path program 1 times [2022-11-20 18:57:51,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:57:51,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456101076] [2022-11-20 18:57:51,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:51,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:57:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:57:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 18:57:51,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:57:51,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456101076] [2022-11-20 18:57:51,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456101076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 18:57:51,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477505364] [2022-11-20 18:57:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:51,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:57:51,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:57:51,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:57:51,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 18:57:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:57:51,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 18:57:51,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:57:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:57:52,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:57:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 18:57:52,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477505364] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:57:52,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1081543804] [2022-11-20 18:57:52,530 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-20 18:57:52,530 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 18:57:52,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 18:57:52,531 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 18:57:52,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 18:57:54,028 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 29 for LOIs [2022-11-20 18:57:54,322 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 20 for LOIs [2022-11-20 18:57:54,324 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 18:57:58,457 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4247#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2)) (= ~methaneLevelCritical~0 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| |timeShift_getWaterLevel_#res#1|) (<= |old(~pumpRunning~0)| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= ~head~0.base 0) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 (+ |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483648)) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483647) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483647) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 18:57:58,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 18:57:58,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 18:57:58,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 20 [2022-11-20 18:57:58,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800642128] [2022-11-20 18:57:58,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 18:57:58,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 18:57:58,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:57:58,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 18:57:58,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1670, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 18:57:58,463 INFO L87 Difference]: Start difference. First operand 337 states and 416 transitions. Second operand has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 17 states have internal predecessors, (85), 8 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 18:58:00,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:00,388 INFO L93 Difference]: Finished difference Result 941 states and 1190 transitions. [2022-11-20 18:58:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-20 18:58:00,389 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 17 states have internal predecessors, (85), 8 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) Word has length 50 [2022-11-20 18:58:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:00,393 INFO L225 Difference]: With dead ends: 941 [2022-11-20 18:58:00,393 INFO L226 Difference]: Without dead ends: 702 [2022-11-20 18:58:00,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2108 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=786, Invalid=6020, Unknown=0, NotChecked=0, Total=6806 [2022-11-20 18:58:00,398 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 313 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:00,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 405 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 18:58:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-20 18:58:00,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 550. [2022-11-20 18:58:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 361 states have (on average 1.1966759002770082) internal successors, (432), 408 states have internal predecessors, (432), 89 states have call successors, (89), 85 states have call predecessors, (89), 99 states have return successors, (151), 87 states have call predecessors, (151), 89 states have call successors, (151) [2022-11-20 18:58:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 672 transitions. [2022-11-20 18:58:00,485 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 672 transitions. Word has length 50 [2022-11-20 18:58:00,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:00,486 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 672 transitions. [2022-11-20 18:58:00,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 17 states have internal predecessors, (85), 8 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 18:58:00,486 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 672 transitions. [2022-11-20 18:58:00,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 18:58:00,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:00,489 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-20 18:58:00,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 18:58:00,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:58:00,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2091136722, now seen corresponding path program 1 times [2022-11-20 18:58:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:58:00,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573841422] [2022-11-20 18:58:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:58:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 18:58:01,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:58:01,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573841422] [2022-11-20 18:58:01,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573841422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 18:58:01,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370808919] [2022-11-20 18:58:01,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:01,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:58:01,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:58:01,496 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:58:01,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 18:58:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:01,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 18:58:01,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 18:58:02,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 18:58:02,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370808919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:02,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2105510200] [2022-11-20 18:58:02,697 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-20 18:58:02,697 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 18:58:02,697 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 18:58:02,698 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 18:58:02,702 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 18:58:04,670 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 52 for LOIs [2022-11-20 18:58:04,936 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 39 for LOIs [2022-11-20 18:58:04,942 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 18:58:08,976 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6994#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2)) (= ~methaneLevelCritical~0 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| |timeShift_getWaterLevel_#res#1|) (= |old(~pumpRunning~0)| 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 1) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= ~head~0.base 0) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483647) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 18:58:08,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 18:58:08,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 18:58:08,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 30 [2022-11-20 18:58:08,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877745711] [2022-11-20 18:58:08,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 18:58:08,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 18:58:08,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:58:08,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 18:58:08,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=2400, Unknown=0, NotChecked=0, Total=2756 [2022-11-20 18:58:08,980 INFO L87 Difference]: Start difference. First operand 550 states and 672 transitions. Second operand has 30 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 25 states have internal predecessors, (63), 8 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-20 18:58:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:11,195 INFO L93 Difference]: Finished difference Result 1210 states and 1512 transitions. [2022-11-20 18:58:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 18:58:11,196 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 25 states have internal predecessors, (63), 8 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 49 [2022-11-20 18:58:11,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:11,206 INFO L225 Difference]: With dead ends: 1210 [2022-11-20 18:58:11,207 INFO L226 Difference]: Without dead ends: 798 [2022-11-20 18:58:11,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 109 SyntacticMatches, 6 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2687 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1031, Invalid=6279, Unknown=0, NotChecked=0, Total=7310 [2022-11-20 18:58:11,212 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 324 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:11,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 469 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 18:58:11,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-11-20 18:58:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 551. [2022-11-20 18:58:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 363 states have (on average 1.1955922865013775) internal successors, (434), 408 states have internal predecessors, (434), 89 states have call successors, (89), 85 states have call predecessors, (89), 98 states have return successors, (150), 88 states have call predecessors, (150), 89 states have call successors, (150) [2022-11-20 18:58:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 673 transitions. [2022-11-20 18:58:11,337 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 673 transitions. Word has length 49 [2022-11-20 18:58:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:11,338 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 673 transitions. [2022-11-20 18:58:11,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 25 states have internal predecessors, (63), 8 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-20 18:58:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 673 transitions. [2022-11-20 18:58:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 18:58:11,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:11,341 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-20 18:58:11,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:11,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 18:58:11,548 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:11,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:11,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1095342392, now seen corresponding path program 1 times [2022-11-20 18:58:11,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:58:11,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233507295] [2022-11-20 18:58:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:11,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:58:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 18:58:12,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:58:12,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233507295] [2022-11-20 18:58:12,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233507295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 18:58:12,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064039654] [2022-11-20 18:58:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:12,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:58:12,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:58:12,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:58:12,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 18:58:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:12,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 18:58:12,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 18:58:13,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 18:58:13,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064039654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:13,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1546528288] [2022-11-20 18:58:13,792 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-20 18:58:13,792 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 18:58:13,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 18:58:13,793 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 18:58:13,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 18:58:20,541 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 144 for LOIs [2022-11-20 18:58:20,567 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 56 for LOIs [2022-11-20 18:58:20,834 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 46 for LOIs [2022-11-20 18:58:20,840 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 18:58:27,632 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10161#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (<= ~pumpRunning~0 1) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2)) (<= 0 ~systemActive~0) (= ~methaneLevelCritical~0 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (= ~head~0.offset 0) (<= |old(~switchedOnBeforeTS~0)| 2147483647) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| |timeShift_getWaterLevel_#res#1|) (= |old(~pumpRunning~0)| 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (<= 0 (+ |old(~switchedOnBeforeTS~0)| 2147483648)) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483648)) (= |#NULL.offset| 0) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483647) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 18:58:27,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 18:58:27,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 18:58:27,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 13] total 38 [2022-11-20 18:58:27,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821035468] [2022-11-20 18:58:27,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 18:58:27,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 18:58:27,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:58:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 18:58:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=3602, Unknown=0, NotChecked=0, Total=4032 [2022-11-20 18:58:27,636 INFO L87 Difference]: Start difference. First operand 551 states and 673 transitions. Second operand has 38 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 32 states have internal predecessors, (84), 10 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-20 18:58:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:33,164 INFO L93 Difference]: Finished difference Result 1136 states and 1419 transitions. [2022-11-20 18:58:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-20 18:58:33,165 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 32 states have internal predecessors, (84), 10 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) Word has length 52 [2022-11-20 18:58:33,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:33,166 INFO L225 Difference]: With dead ends: 1136 [2022-11-20 18:58:33,166 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 18:58:33,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 112 SyntacticMatches, 8 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7375 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=2708, Invalid=18172, Unknown=0, NotChecked=0, Total=20880 [2022-11-20 18:58:33,174 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 1314 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:33,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 596 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 18:58:33,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 18:58:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 18:58:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:33,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 18:58:33,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2022-11-20 18:58:33,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:33,176 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 18:58:33,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 32 states have internal predecessors, (84), 10 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-20 18:58:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 18:58:33,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 18:58:33,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 18:58:33,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:33,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:58:33,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 18:58:45,899 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 556 562) no Hoare annotation was computed. [2022-11-20 18:58:45,900 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 556 562) the Hoare annotation is: true [2022-11-20 18:58:45,900 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 83 94) the Hoare annotation is: true [2022-11-20 18:58:45,900 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 83 94) no Hoare annotation was computed. [2022-11-20 18:58:45,900 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 831 860) no Hoare annotation was computed. [2022-11-20 18:58:45,900 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 831 860) the Hoare annotation is: true [2022-11-20 18:58:45,900 INFO L902 garLoopResultBuilder]: At program point L856(lines 831 860) the Hoare annotation is: true [2022-11-20 18:58:45,901 INFO L899 garLoopResultBuilder]: For program point L852(line 852) no Hoare annotation was computed. [2022-11-20 18:58:45,901 INFO L899 garLoopResultBuilder]: For program point L845(lines 845 849) no Hoare annotation was computed. [2022-11-20 18:58:45,901 INFO L902 garLoopResultBuilder]: At program point L845-1(lines 845 849) the Hoare annotation is: true [2022-11-20 18:58:45,901 INFO L902 garLoopResultBuilder]: At program point L841-2(lines 841 855) the Hoare annotation is: true [2022-11-20 18:58:45,901 INFO L902 garLoopResultBuilder]: At program point L837(line 837) the Hoare annotation is: true [2022-11-20 18:58:45,901 INFO L899 garLoopResultBuilder]: For program point L837-1(line 837) no Hoare annotation was computed. [2022-11-20 18:58:45,902 INFO L895 garLoopResultBuilder]: At program point L543-1(lines 543 549) the Hoare annotation is: (let ((.cse2 (= 0 ~systemActive~0)) (.cse11 (not (< 0 ~waterLevel~0))) (.cse7 (= ~pumpRunning~0 0)) (.cse8 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse12 (not (= |old(~waterLevel~0)| 1))) (.cse13 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse13)) (.cse9 (or .cse12 (<= 1 ~waterLevel~0))) (.cse10 (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and .cse11 .cse8) (and .cse7 .cse8))) (.cse4 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (not .cse7)) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse6 (and .cse13 (not .cse2))) (.cse3 (not (< |old(~waterLevel~0)| 3)))) (and (or .cse0 (and (= |timeShift_processEnvironment_~tmp~3#1| 1) (or .cse1 (= ~switchedOnBeforeTS~0 0)) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse2 .cse3 (not (<= 2 |old(~waterLevel~0)|))) (or (and .cse4 .cse1 (= ~waterLevel~0 1) .cse5) .cse6 (not (= |old(~waterLevel~0)| 2)) (and .cse4 .cse7 (= 2 ~waterLevel~0) .cse5)) (or (and (<= 2 ~waterLevel~0) .cse8) (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 (and .cse9 .cse10 .cse7 (= |timeShift_processEnvironment_~tmp~3#1| 0) .cse5) (and .cse10 .cse7 .cse2 .cse5) .cse3) (or (and .cse4 .cse9 .cse10 .cse5) (and .cse4 .cse1 .cse11 .cse8 .cse5) (and (or .cse12 .cse6) (or .cse6 (= |old(~switchedOnBeforeTS~0)| 0))) .cse3)))) [2022-11-20 18:58:45,903 INFO L895 garLoopResultBuilder]: At program point L572(lines 572 580) the Hoare annotation is: (let ((.cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse5 (not (= |old(~waterLevel~0)| 1))) (.cse6 (and (= |old(~pumpRunning~0)| 0) (not (= 0 ~systemActive~0)))) (.cse4 (not (< |old(~waterLevel~0)| 3)))) (and (or .cse0 (and .cse1 (or (not (< ~waterLevel~0 2)) (= |timeShift_processEnvironment_~tmp~3#1| 0)) .cse2 .cse3) .cse4) (or .cse0 .cse5 (<= 1 ~waterLevel~0)) (or (and .cse1 (= |timeShift_processEnvironment_~tmp~3#1| 1) (= |old(~waterLevel~0)| ~waterLevel~0) .cse2 .cse3) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse6 (not (= |old(~waterLevel~0)| 2))) (or (and (or .cse5 .cse6) (or .cse6 (= |old(~switchedOnBeforeTS~0)| 0))) .cse4))) [2022-11-20 18:58:45,903 INFO L895 garLoopResultBuilder]: At program point L568(lines 568 585) the Hoare annotation is: (let ((.cse9 (= |old(~pumpRunning~0)| 0)) (.cse3 (= ~pumpRunning~0 0))) (let ((.cse2 (let ((.cse10 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and (not (< 0 ~waterLevel~0)) .cse10) (and .cse3 .cse10)))) (.cse1 (not (= |old(~waterLevel~0)| 1))) (.cse0 (and .cse9 (not (= 0 ~systemActive~0)))) (.cse7 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse5 (not .cse9)) (.cse6 (not (< |old(~waterLevel~0)| 3))) (.cse8 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 2)) (= ~waterLevel~0 1)) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and (or .cse1 (<= 1 ~waterLevel~0)) .cse2 .cse3 .cse4) .cse5 .cse6) (or (not (<= |old(~waterLevel~0)| 1)) (and .cse7 .cse2 (not .cse3) .cse4) (and (or .cse1 .cse0) (or .cse0 (= |old(~switchedOnBeforeTS~0)| 0)))) (or (and .cse7 .cse4) (not (<= |old(~waterLevel~0)| 2)) .cse8) (or .cse5 (= |old(~waterLevel~0)| ~waterLevel~0) .cse6 .cse8)))) [2022-11-20 18:58:45,903 INFO L899 garLoopResultBuilder]: For program point L969(lines 969 975) no Hoare annotation was computed. [2022-11-20 18:58:45,904 INFO L895 garLoopResultBuilder]: At program point L932(line 932) the Hoare annotation is: (and (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (not (<= |old(~waterLevel~0)| 1))) (or (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (let ((.cse0 (and (= |old(~pumpRunning~0)| 0) (not (= 0 ~systemActive~0))))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse0 (= |old(~switchedOnBeforeTS~0)| 0)))) (not (< |old(~waterLevel~0)| 3)))) [2022-11-20 18:58:45,904 INFO L899 garLoopResultBuilder]: For program point L536-2(lines 532 554) no Hoare annotation was computed. [2022-11-20 18:58:45,904 INFO L895 garLoopResultBuilder]: At program point L966(line 966) the Hoare annotation is: (let ((.cse9 (not (< 0 ~waterLevel~0))) (.cse5 (= ~pumpRunning~0 0)) (.cse10 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse11 (not (= |old(~waterLevel~0)| 1)))) (let ((.cse8 (or .cse11 (<= 1 ~waterLevel~0))) (.cse4 (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and .cse9 .cse10) (and .cse5 .cse10))) (.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (not .cse5)) (.cse2 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| ~waterLevel~0)) (.cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse7 (= |old(~pumpRunning~0)| 0)) (.cse6 (= 0 ~systemActive~0))) (and (or (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1) .cse3) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and .cse4 .cse5 .cse2 .cse6 .cse3) (not (<= |old(~waterLevel~0)| 1)) (not .cse7) (and .cse8 .cse4 .cse5 .cse2 (= |timeShift_processEnvironment_~tmp~3#1| 0) .cse3)) (or (and .cse0 .cse8 .cse4 .cse2 .cse3) (and .cse0 .cse1 .cse9 .cse2 .cse10 .cse3) (let ((.cse12 (and .cse7 (not .cse6)))) (and (or .cse11 .cse12) (or .cse12 (= |old(~switchedOnBeforeTS~0)| 0)))) (not (< |old(~waterLevel~0)| 3)))))) [2022-11-20 18:58:45,904 INFO L899 garLoopResultBuilder]: For program point L966-1(line 966) no Hoare annotation was computed. [2022-11-20 18:58:45,905 INFO L895 garLoopResultBuilder]: At program point L578(line 578) the Hoare annotation is: (let ((.cse0 (not (= |old(~waterLevel~0)| 1)))) (and (or (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and (or .cse0 (<= 1 ~waterLevel~0)) (= ~pumpRunning~0 0) (<= ~waterLevel~0 |old(~waterLevel~0)|) (= |timeShift_processEnvironment_~tmp~3#1| 0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (not (<= |old(~waterLevel~0)| 1))) (or (let ((.cse1 (and (= |old(~pumpRunning~0)| 0) (not (= 0 ~systemActive~0))))) (and (or .cse0 .cse1) (or .cse1 (= |old(~switchedOnBeforeTS~0)| 0)))) (not (< |old(~waterLevel~0)| 3))))) [2022-11-20 18:58:45,905 INFO L895 garLoopResultBuilder]: At program point L583(line 583) the Hoare annotation is: (let ((.cse0 (not (<= |old(~waterLevel~0)| 1))) (.cse5 (= |old(~pumpRunning~0)| 0)) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (not (= ~pumpRunning~0 0))) (.cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (and (or .cse0 (and .cse1 .cse2 (not (< 0 ~waterLevel~0)) (<= ~waterLevel~0 |old(~waterLevel~0)|) .cse3) (let ((.cse4 (and .cse5 (not (= 0 ~systemActive~0))))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse4) (or .cse4 (= |old(~switchedOnBeforeTS~0)| 0))))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 (not .cse5)) (or (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-20 18:58:45,906 INFO L895 garLoopResultBuilder]: At program point L583-1(lines 564 588) the Hoare annotation is: (let ((.cse7 (= ~pumpRunning~0 0)) (.cse8 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (and .cse8 (not (= 0 ~systemActive~0)))) (.cse2 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (not .cse7)) (.cse6 (not (= |old(~waterLevel~0)| 1))) (.cse4 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (not (<= |old(~waterLevel~0)| 1)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 2)) (= ~waterLevel~0 1)) (or .cse1 (and .cse2 .cse3 (not (< 0 ~waterLevel~0)) .cse4 .cse5) (and (or .cse6 .cse0) (or .cse0 (= |old(~switchedOnBeforeTS~0)| 0)))) (or (and .cse2 .cse3 .cse5) (and (= |timeShift_processEnvironment_~tmp~3#1| 1) (or .cse3 (= ~switchedOnBeforeTS~0 0)) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and (or .cse6 (<= 1 ~waterLevel~0)) .cse7 .cse4 (= |timeShift_processEnvironment_~tmp~3#1| 0) .cse5) .cse1 (not .cse8))))) [2022-11-20 18:58:45,906 INFO L895 garLoopResultBuilder]: At program point L951(line 951) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (= |old(~pumpRunning~0)| 0)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (not (< |old(~waterLevel~0)| 3)))) (and (or (and .cse0 .cse1) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (and .cse0 (or (not (= ~switchedOnBeforeTS~0 0)) (= ~waterLevel~0 1)) .cse1) (let ((.cse2 (and .cse3 (not (= 0 ~systemActive~0))))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse2) (or .cse2 (= |old(~switchedOnBeforeTS~0)| 0)))) .cse4) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (not .cse3) (and (= ~pumpRunning~0 0) .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse4))) [2022-11-20 18:58:45,906 INFO L895 garLoopResultBuilder]: At program point L951-1(line 951) the Hoare annotation is: (let ((.cse3 (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__2_#t~ret50#1|)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse2 (= |old(~pumpRunning~0)| 0)) (.cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse3 .cse4))) (and (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (let ((.cse1 (and .cse2 (not (= 0 ~systemActive~0))))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse1 (= |old(~switchedOnBeforeTS~0)| 0))))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (not .cse2) (and (= ~pumpRunning~0 0) .cse3 .cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (not (< |old(~waterLevel~0)| 3))) (or .cse0 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-20 18:58:45,907 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 529 555) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (= |old(~pumpRunning~0)| 0)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (not (< |old(~waterLevel~0)| 3)))) (and (or (and .cse0 .cse1) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (and .cse0 (or (not (= ~switchedOnBeforeTS~0 0)) (= ~waterLevel~0 1)) .cse1) (let ((.cse2 (and .cse3 (not (= 0 ~systemActive~0))))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse2) (or .cse2 (= |old(~switchedOnBeforeTS~0)| 0)))) .cse4) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (not .cse3) (and (= ~pumpRunning~0 0) .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse4))) [2022-11-20 18:58:45,907 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 529 555) no Hoare annotation was computed. [2022-11-20 18:58:45,907 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 932) no Hoare annotation was computed. [2022-11-20 18:58:45,907 INFO L899 garLoopResultBuilder]: For program point L968(lines 968 978) no Hoare annotation was computed. [2022-11-20 18:58:45,908 INFO L899 garLoopResultBuilder]: For program point L964(lines 964 981) no Hoare annotation was computed. [2022-11-20 18:58:45,908 INFO L895 garLoopResultBuilder]: At program point L964-1(lines 956 984) the Hoare annotation is: (let ((.cse12 (not (= |old(~waterLevel~0)| 1)))) (let ((.cse10 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse15 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse17 (= |old(~pumpRunning~0)| 0)) (.cse2 (or .cse12 (<= 1 ~waterLevel~0))) (.cse3 (= ~pumpRunning~0 0)) (.cse4 (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| |old(~pumpRunning~0)|)) (.cse5 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| ~waterLevel~0)) (.cse16 (= 0 ~systemActive~0)) (.cse7 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse6 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (let ((.cse0 (and (<= 2 ~waterLevel~0) .cse6)) (.cse8 (and .cse2 .cse3 .cse4 (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) .cse5 .cse6 .cse16 .cse7)) (.cse13 (and .cse17 (not .cse16))) (.cse1 (not .cse17)) (.cse11 (not .cse3)) (.cse14 (and .cse10 .cse3 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2) .cse5 .cse15 .cse6 .cse16 .cse7)) (.cse9 (not (< |old(~waterLevel~0)| 3)))) (and (or .cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse1 (and .cse2 .cse3 .cse4 .cse5 .cse6 (= |timeShift_processEnvironment_~tmp~3#1| 0) .cse7) .cse8 .cse9) (or .cse0 (and .cse10 (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and (not (< 0 ~waterLevel~0)) .cse6)) .cse11 .cse4 .cse5 .cse7) .cse8 (and (or .cse12 .cse13) (or .cse13 (= |old(~switchedOnBeforeTS~0)| 0))) .cse9) (or (and .cse10 .cse4 .cse5 (= ~waterLevel~0 1) .cse7) .cse13 (not (= |old(~waterLevel~0)| 2)) .cse14) (or .cse1 (and (= |timeShift_processEnvironment_~tmp~3#1| 1) (or .cse11 (= ~switchedOnBeforeTS~0 0)) .cse5 .cse15) .cse14 .cse9 (not (<= 2 |old(~waterLevel~0)|))))))) [2022-11-20 18:58:45,908 INFO L895 garLoopResultBuilder]: At program point L783(lines 732 784) the Hoare annotation is: false [2022-11-20 18:58:45,909 INFO L895 garLoopResultBuilder]: At program point L771-2(lines 763 778) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0))) (let ((.cse2 (= ~switchedOnBeforeTS~0 0)) (.cse3 (or (not .cse0) (= 0 ~systemActive~0))) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (<= ~waterLevel~0 1) .cse1 .cse2) (and (not .cse2) .cse3 .cse1 (< ~waterLevel~0 3)) (and .cse3 .cse1 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse1)))) [2022-11-20 18:58:45,909 INFO L899 garLoopResultBuilder]: For program point L734(lines 733 782) no Hoare annotation was computed. [2022-11-20 18:58:45,909 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-20 18:58:45,909 INFO L895 garLoopResultBuilder]: At program point L755(line 755) the Hoare annotation is: (let ((.cse3 (= ~pumpRunning~0 0))) (let ((.cse0 (= ~switchedOnBeforeTS~0 0)) (.cse1 (not .cse3)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not .cse0) .cse1 .cse2 (< ~waterLevel~0 3)) (and (= 2 ~waterLevel~0) .cse2 .cse0) (and .cse3 (<= ~waterLevel~0 1) .cse2 .cse0) (and .cse1 .cse2 (= ~waterLevel~0 1))))) [2022-11-20 18:58:45,909 INFO L895 garLoopResultBuilder]: At program point L780(lines 733 782) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0))) (let ((.cse3 (= ~switchedOnBeforeTS~0 0)) (.cse4 (not .cse0)) (.cse1 (<= ~waterLevel~0 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and (= 2 ~waterLevel~0) (or .cse4 .cse3) .cse2) (and .cse4 .cse2 (= ~waterLevel~0 1)) (and (not .cse3) .cse4 .cse1 .cse2)))) [2022-11-20 18:58:45,910 INFO L899 garLoopResultBuilder]: For program point L743(lines 743 749) no Hoare annotation was computed. [2022-11-20 18:58:45,910 INFO L899 garLoopResultBuilder]: For program point L743-1(lines 743 749) no Hoare annotation was computed. [2022-11-20 18:58:45,910 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 18:58:45,910 INFO L895 garLoopResultBuilder]: At program point L914(lines 914 921) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp~7#1| 1) (= ~waterLevel~0 1) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (= ~switchedOnBeforeTS~0 0)) [2022-11-20 18:58:45,910 INFO L902 garLoopResultBuilder]: At program point L786(lines 723 790) the Hoare annotation is: true [2022-11-20 18:58:45,910 INFO L899 garLoopResultBuilder]: For program point L753(lines 753 759) no Hoare annotation was computed. [2022-11-20 18:58:45,911 INFO L895 garLoopResultBuilder]: At program point L753-1(lines 753 759) the Hoare annotation is: (let ((.cse3 (= ~pumpRunning~0 0))) (let ((.cse0 (= ~switchedOnBeforeTS~0 0)) (.cse1 (not .cse3)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not .cse0) .cse1 .cse2 (< ~waterLevel~0 3)) (and (= 2 ~waterLevel~0) .cse2 .cse0) (and .cse3 (<= ~waterLevel~0 1) .cse2 .cse0) (and .cse1 .cse2 (= ~waterLevel~0 1))))) [2022-11-20 18:58:45,911 INFO L902 garLoopResultBuilder]: At program point L914-2(lines 914 921) the Hoare annotation is: true [2022-11-20 18:58:45,911 INFO L895 garLoopResultBuilder]: At program point L745(line 745) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0))) (let ((.cse3 (= ~switchedOnBeforeTS~0 0)) (.cse4 (not .cse0)) (.cse1 (<= ~waterLevel~0 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and (or (and (<= 2 ~waterLevel~0) .cse2 (<= ~waterLevel~0 2)) (and .cse2 (= ~waterLevel~0 1))) (or .cse4 .cse3)) (and (not .cse3) .cse4 .cse1 .cse2)))) [2022-11-20 18:58:45,911 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 71 82) no Hoare annotation was computed. [2022-11-20 18:58:45,911 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 71 82) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse2 (= ~switchedOnBeforeTS~0 0)) (.cse3 (not (<= |old(~waterLevel~0)| 1))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)) (or (not (= |old(~waterLevel~0)| 2)) .cse1 (and (not .cse2) .cse0)) (or .cse3 .cse0 .cse1 .cse2) (or .cse3 (not (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse1))) [2022-11-20 18:58:45,912 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 634 642) no Hoare annotation was computed. [2022-11-20 18:58:45,912 INFO L902 garLoopResultBuilder]: At program point isPumpRunningENTRY(lines 634 642) the Hoare annotation is: true [2022-11-20 18:58:45,915 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:58:45,918 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 18:58:45,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:58:45 BoogieIcfgContainer [2022-11-20 18:58:45,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 18:58:45,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 18:58:45,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 18:58:45,956 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 18:58:45,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:36" (3/4) ... [2022-11-20 18:58:45,960 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 18:58:45,966 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-20 18:58:45,966 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-20 18:58:45,966 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-20 18:58:45,967 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-20 18:58:45,967 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-20 18:58:45,967 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2022-11-20 18:58:45,975 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 52 nodes and edges [2022-11-20 18:58:45,975 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 18:58:45,976 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 18:58:45,977 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 18:58:45,977 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 18:58:46,017 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(waterLevel) <= 1) || ((pumpRunning == \old(pumpRunning) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(pumpRunning) == 0)) || (((pumpRunning == 0 && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 3))) && ((((pumpRunning == \old(pumpRunning) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-20 18:58:46,018 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || ((tmp == 1 && (!(pumpRunning == 0) || switchedOnBeforeTS == 0)) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) < 3)) || !(2 <= \old(waterLevel))) && ((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 2 == waterLevel) && pumpRunning == switchedOnBeforeTS))) && ((((((2 <= waterLevel && waterLevel <= \old(waterLevel)) || !(\old(switchedOnBeforeTS) == \old(pumpRunning))) || !(\old(pumpRunning) == 0)) || (((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && pumpRunning == 0) && tmp == 0) && pumpRunning == switchedOnBeforeTS)) || (((((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel))) && pumpRunning == 0) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 3))) && ((((((pumpRunning == \old(pumpRunning) && (!(\old(waterLevel) == 1) || 1 <= waterLevel)) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && !(0 < waterLevel)) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) || !(\old(waterLevel) < 3)) [2022-11-20 18:58:46,019 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((2 <= waterLevel && waterLevel <= \old(waterLevel)) || !(\old(switchedOnBeforeTS) == \old(pumpRunning))) || !(\old(pumpRunning) == 0)) || (((((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && pumpRunning == 0) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && waterLevel <= \old(waterLevel)) && tmp == 0) && pumpRunning == switchedOnBeforeTS)) || ((((((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && pumpRunning == 0) && tmp___0 == \old(pumpRunning)) && pumpRunning == tmp___0) && tmp == waterLevel) && waterLevel <= \old(waterLevel)) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 3)) && (((((2 <= waterLevel && waterLevel <= \old(waterLevel)) || (((((pumpRunning == \old(pumpRunning) && (waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel)))) && !(pumpRunning == 0)) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || ((((((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && pumpRunning == 0) && tmp___0 == \old(pumpRunning)) && pumpRunning == tmp___0) && tmp == waterLevel) && waterLevel <= \old(waterLevel)) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) || !(\old(waterLevel) < 3))) && (((((((pumpRunning == \old(pumpRunning) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || (((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == 2) && tmp == waterLevel) && \old(waterLevel) == waterLevel) && waterLevel <= \old(waterLevel)) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS))) && ((((!(\old(pumpRunning) == 0) || (((tmp == 1 && (!(pumpRunning == 0) || switchedOnBeforeTS == 0)) && tmp == waterLevel) && \old(waterLevel) == waterLevel)) || (((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == 2) && tmp == waterLevel) && \old(waterLevel) == waterLevel) && waterLevel <= \old(waterLevel)) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 3)) || !(2 <= \old(waterLevel))) [2022-11-20 18:58:46,020 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(pumpRunning) == 0 && !(0 == systemActive)) || !(\old(waterLevel) == 2)) || waterLevel == 1) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || ((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && pumpRunning == 0) && pumpRunning == switchedOnBeforeTS)) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) < 3))) && ((!(\old(waterLevel) <= 1) || (((pumpRunning == \old(pumpRunning) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && !(pumpRunning == 0)) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((pumpRunning == \old(pumpRunning) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) < 3)) || !(2 <= \old(waterLevel))) [2022-11-20 18:58:46,020 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) && (!(\old(waterLevel) <= 2) || !(2 <= \old(waterLevel)))) && (((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)) || !(\old(waterLevel) < 3)) [2022-11-20 18:58:46,020 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\old(pumpRunning) == 0 && !(0 == systemActive)) || !(\old(waterLevel) == 2)) || waterLevel == 1) && ((!(\old(waterLevel) <= 1) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && !(0 < waterLevel)) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && pumpRunning == switchedOnBeforeTS) || ((tmp == 1 && (!(pumpRunning == 0) || switchedOnBeforeTS == 0)) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || (((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && pumpRunning == 0) && waterLevel <= \old(waterLevel)) && tmp == 0) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) [2022-11-20 18:58:46,021 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || (((pumpRunning == 0 && (!(waterLevel < 2) || tmp == 0)) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 3)) && ((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) == 1)) || 1 <= waterLevel)) && ((((((pumpRunning == 0 && tmp == 1) && \old(waterLevel) == waterLevel) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || !(\old(waterLevel) == 2))) && (((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)) || !(\old(waterLevel) < 3)) [2022-11-20 18:58:46,044 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 18:58:46,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 18:58:46,045 INFO L158 Benchmark]: Toolchain (without parser) took 71011.33ms. Allocated memory was 195.0MB in the beginning and 755.0MB in the end (delta: 559.9MB). Free memory was 147.6MB in the beginning and 669.4MB in the end (delta: -521.8MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2022-11-20 18:58:46,046 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory was 75.8MB in the beginning and 75.7MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 18:58:46,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 582.26ms. Allocated memory is still 195.0MB. Free memory was 147.6MB in the beginning and 129.3MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 18:58:46,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.85ms. Allocated memory is still 195.0MB. Free memory was 129.3MB in the beginning and 126.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 18:58:46,047 INFO L158 Benchmark]: Boogie Preprocessor took 64.01ms. Allocated memory is still 195.0MB. Free memory was 126.7MB in the beginning and 125.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 18:58:46,047 INFO L158 Benchmark]: RCFGBuilder took 746.91ms. Allocated memory is still 195.0MB. Free memory was 125.1MB in the beginning and 149.2MB in the end (delta: -24.1MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2022-11-20 18:58:46,048 INFO L158 Benchmark]: TraceAbstraction took 69430.07ms. Allocated memory was 195.0MB in the beginning and 755.0MB in the end (delta: 559.9MB). Free memory was 148.2MB in the beginning and 674.7MB in the end (delta: -526.5MB). Peak memory consumption was 446.6MB. Max. memory is 16.1GB. [2022-11-20 18:58:46,048 INFO L158 Benchmark]: Witness Printer took 89.51ms. Allocated memory is still 755.0MB. Free memory was 674.7MB in the beginning and 669.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 18:58:46,050 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory was 75.8MB in the beginning and 75.7MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 582.26ms. Allocated memory is still 195.0MB. Free memory was 147.6MB in the beginning and 129.3MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.85ms. Allocated memory is still 195.0MB. Free memory was 129.3MB in the beginning and 126.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.01ms. Allocated memory is still 195.0MB. Free memory was 126.7MB in the beginning and 125.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 746.91ms. Allocated memory is still 195.0MB. Free memory was 125.1MB in the beginning and 149.2MB in the end (delta: -24.1MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * TraceAbstraction took 69430.07ms. Allocated memory was 195.0MB in the beginning and 755.0MB in the end (delta: 559.9MB). Free memory was 148.2MB in the beginning and 674.7MB in the end (delta: -526.5MB). Peak memory consumption was 446.6MB. Max. memory is 16.1GB. * Witness Printer took 89.51ms. Allocated memory is still 755.0MB. Free memory was 674.7MB in the beginning and 669.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 932]: 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 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.3s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 12.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2707 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2676 mSDsluCounter, 2785 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2251 mSDsCounter, 1695 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5284 IncrementalHoareTripleChecker+Invalid, 6979 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1695 mSolverCounterUnsat, 534 mSDtfsCounter, 5284 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 904 GetRequests, 480 SyntacticMatches, 14 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13760 ImplicationChecksByTransitivity, 29.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=551occurred in iteration=8, InterpolantAutomatonStates: 258, 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, 9 MinimizatonAttempts, 691 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 1136 PreInvPairs, 1402 NumberOfFragments, 1957 HoareAnnotationTreeSize, 1136 FomulaSimplifications, 139105 FormulaSimplificationTreeSizeReduction, 3.7s HoareSimplificationTime, 31 FomulaSimplificationsInter, 125009 FormulaSimplificationTreeSizeReductionInter, 8.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 514 NumberOfCodeBlocks, 514 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 692 ConstructedInterpolants, 0 QuantifiedInterpolants, 3008 SizeOfPredicates, 63 NumberOfNonLiveVariables, 1128 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 245/322 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: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 543]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || ((tmp == 1 && (!(pumpRunning == 0) || switchedOnBeforeTS == 0)) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) < 3)) || !(2 <= \old(waterLevel))) && ((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 2 == waterLevel) && pumpRunning == switchedOnBeforeTS))) && ((((((2 <= waterLevel && waterLevel <= \old(waterLevel)) || !(\old(switchedOnBeforeTS) == \old(pumpRunning))) || !(\old(pumpRunning) == 0)) || (((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && pumpRunning == 0) && tmp == 0) && pumpRunning == switchedOnBeforeTS)) || (((((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel))) && pumpRunning == 0) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 3))) && ((((((pumpRunning == \old(pumpRunning) && (!(\old(waterLevel) == 1) || 1 <= waterLevel)) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && !(0 < waterLevel)) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) || !(\old(waterLevel) < 3)) - InvariantResult [Line: 572]: Loop Invariant Derived loop invariant: (((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || (((pumpRunning == 0 && (!(waterLevel < 2) || tmp == 0)) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 3)) && ((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) == 1)) || 1 <= waterLevel)) && ((((((pumpRunning == 0 && tmp == 1) && \old(waterLevel) == waterLevel) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || !(\old(waterLevel) == 2))) && (((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)) || !(\old(waterLevel) < 3)) - InvariantResult [Line: 733]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0 && waterLevel <= 1) && splverifierCounter == 0) && switchedOnBeforeTS == 0) || ((2 == waterLevel && (!(pumpRunning == 0) || switchedOnBeforeTS == 0)) && splverifierCounter == 0)) || ((!(pumpRunning == 0) && splverifierCounter == 0) && waterLevel == 1)) || (((!(switchedOnBeforeTS == 0) && !(pumpRunning == 0)) && waterLevel <= 1) && splverifierCounter == 0) - InvariantResult [Line: 753]: Loop Invariant Derived loop invariant: (((((!(switchedOnBeforeTS == 0) && !(pumpRunning == 0)) && splverifierCounter == 0) && waterLevel < 3) || ((2 == waterLevel && splverifierCounter == 0) && switchedOnBeforeTS == 0)) || (((pumpRunning == 0 && waterLevel <= 1) && splverifierCounter == 0) && switchedOnBeforeTS == 0)) || ((!(pumpRunning == 0) && splverifierCounter == 0) && waterLevel == 1) - InvariantResult [Line: 831]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 568]: Loop Invariant Derived loop invariant: ((((((\old(pumpRunning) == 0 && !(0 == systemActive)) || !(\old(waterLevel) == 2)) || waterLevel == 1) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || ((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && pumpRunning == 0) && pumpRunning == switchedOnBeforeTS)) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) < 3))) && ((!(\old(waterLevel) <= 1) || (((pumpRunning == \old(pumpRunning) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && !(pumpRunning == 0)) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((pumpRunning == \old(pumpRunning) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) < 3)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 564]: Loop Invariant Derived loop invariant: (((((\old(pumpRunning) == 0 && !(0 == systemActive)) || !(\old(waterLevel) == 2)) || waterLevel == 1) && ((!(\old(waterLevel) <= 1) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && !(0 < waterLevel)) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && pumpRunning == switchedOnBeforeTS) || ((tmp == 1 && (!(pumpRunning == 0) || switchedOnBeforeTS == 0)) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || (((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && pumpRunning == 0) && waterLevel <= \old(waterLevel)) && tmp == 0) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) - InvariantResult [Line: 932]: Loop Invariant Derived loop invariant: ((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) && (!(\old(waterLevel) <= 2) || !(2 <= \old(waterLevel)))) && (((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)) || !(\old(waterLevel) < 3)) - InvariantResult [Line: 732]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 914]: Loop Invariant Derived loop invariant: ((tmp == 1 && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0 - InvariantResult [Line: 956]: Loop Invariant Derived loop invariant: ((((((((2 <= waterLevel && waterLevel <= \old(waterLevel)) || !(\old(switchedOnBeforeTS) == \old(pumpRunning))) || !(\old(pumpRunning) == 0)) || (((((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && pumpRunning == 0) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && waterLevel <= \old(waterLevel)) && tmp == 0) && pumpRunning == switchedOnBeforeTS)) || ((((((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && pumpRunning == 0) && tmp___0 == \old(pumpRunning)) && pumpRunning == tmp___0) && tmp == waterLevel) && waterLevel <= \old(waterLevel)) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 3)) && (((((2 <= waterLevel && waterLevel <= \old(waterLevel)) || (((((pumpRunning == \old(pumpRunning) && (waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel)))) && !(pumpRunning == 0)) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || ((((((((!(\old(waterLevel) == 1) || 1 <= waterLevel) && pumpRunning == 0) && tmp___0 == \old(pumpRunning)) && pumpRunning == tmp___0) && tmp == waterLevel) && waterLevel <= \old(waterLevel)) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) || !(\old(waterLevel) < 3))) && (((((((pumpRunning == \old(pumpRunning) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || (((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == 2) && tmp == waterLevel) && \old(waterLevel) == waterLevel) && waterLevel <= \old(waterLevel)) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS))) && ((((!(\old(pumpRunning) == 0) || (((tmp == 1 && (!(pumpRunning == 0) || switchedOnBeforeTS == 0)) && tmp == waterLevel) && \old(waterLevel) == waterLevel)) || (((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == 2) && tmp == waterLevel) && \old(waterLevel) == waterLevel) && waterLevel <= \old(waterLevel)) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 3)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 951]: Loop Invariant Derived loop invariant: (((!(\old(waterLevel) <= 1) || ((pumpRunning == \old(pumpRunning) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(pumpRunning) == 0)) || (((pumpRunning == 0 && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 3))) && ((((pumpRunning == \old(pumpRunning) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 841]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 723]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 914]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 18:58:46,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc666b7-839c-415a-b6c6-436783977714/bin/utaipan-6cKwYrpEi9/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