./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aba011a2dee79947f4cca7910fc4583b21e1f3cb9acd1affa050aa7677352666 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:01:33,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:01:33,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:01:33,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:01:33,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:01:33,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:01:33,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:01:33,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:01:33,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:01:33,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:01:33,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:01:33,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:01:33,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:01:33,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:01:33,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:01:33,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:01:33,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:01:33,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:01:33,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:01:33,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:01:33,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:01:33,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:01:33,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:01:33,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:01:33,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:01:33,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:01:33,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:01:33,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:01:33,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:01:33,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:01:33,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:01:33,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:01:33,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:01:33,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:01:33,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:01:33,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:01:33,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:01:33,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:01:33,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:01:33,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:01:33,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:01:33,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:01:33,767 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:01:33,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:01:33,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:01:33,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:01:33,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:01:33,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:01:33,770 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:01:33,770 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:01:33,771 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:01:33,771 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:01:33,772 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:01:33,772 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:01:33,772 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:01:33,773 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:01:33,773 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:01:33,773 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:01:33,773 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:01:33,774 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:01:33,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:01:33,775 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:01:33,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:01:33,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:01:33,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:01:33,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:01:33,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:01:33,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:01:33,778 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:01:33,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:01:33,778 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:01:33,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:01:33,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:01:33,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:01:33,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:01:33,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:01:33,780 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:01:33,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:01:33,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:01:33,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:01:33,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:01:33,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:01:33,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:01:33,781 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_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aba011a2dee79947f4cca7910fc4583b21e1f3cb9acd1affa050aa7677352666 [2022-11-19 07:01:34,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:01:34,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:01:34,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:01:34,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:01:34,116 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:01:34,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2022-11-19 07:01:34,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/data/05c4941e5/4786575bca644d5a9523e6b5a78a4c2d/FLAG16c1f068b [2022-11-19 07:01:34,830 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:01:34,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2022-11-19 07:01:34,859 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/data/05c4941e5/4786575bca644d5a9523e6b5a78a4c2d/FLAG16c1f068b [2022-11-19 07:01:35,121 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/data/05c4941e5/4786575bca644d5a9523e6b5a78a4c2d [2022-11-19 07:01:35,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:01:35,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:01:35,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:01:35,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:01:35,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:01:35,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@715701d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35, skipping insertion in model container [2022-11-19 07:01:35,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:01:35,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:01:35,409 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2022-11-19 07:01:35,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:01:35,582 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:01:35,596 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2022-11-19 07:01:35,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:01:35,659 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:01:35,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35 WrapperNode [2022-11-19 07:01:35,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:01:35,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:01:35,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:01:35,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:01:35,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,735 INFO L138 Inliner]: procedures = 58, calls = 103, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 229 [2022-11-19 07:01:35,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:01:35,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:01:35,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:01:35,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:01:35,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,787 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:01:35,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:01:35,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:01:35,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:01:35,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (1/1) ... [2022-11-19 07:01:35,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:01:35,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:35,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:01:35,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:01:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:01:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 07:01:35,892 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 07:01:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:01:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:01:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:01:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:01:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 07:01:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 07:01:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 07:01:35,894 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 07:01:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2022-11-19 07:01:35,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2022-11-19 07:01:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:01:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 07:01:35,895 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 07:01:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:01:35,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:01:36,010 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:01:36,012 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:01:36,292 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:01:36,556 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:01:36,563 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:01:36,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:36 BoogieIcfgContainer [2022-11-19 07:01:36,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:01:36,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:01:36,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:01:36,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:01:36,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:01:35" (1/3) ... [2022-11-19 07:01:36,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2449a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:01:36, skipping insertion in model container [2022-11-19 07:01:36,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:35" (2/3) ... [2022-11-19 07:01:36,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2449a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:01:36, skipping insertion in model container [2022-11-19 07:01:36,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:36" (3/3) ... [2022-11-19 07:01:36,576 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2022-11-19 07:01:36,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:01:36,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:01:36,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:01:36,657 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;@5c8f4ade, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:01:36,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:01:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 07:01:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:01:36,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:36,673 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] [2022-11-19 07:01:36,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:36,679 INFO L85 PathProgramCache]: Analyzing trace with hash -930217378, now seen corresponding path program 1 times [2022-11-19 07:01:36,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:36,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202895799] [2022-11-19 07:01:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:36,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:01:36,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:36,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202895799] [2022-11-19 07:01:36,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202895799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:36,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:36,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:01:36,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329268993] [2022-11-19 07:01:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:36,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:01:36,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:36,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:01:36,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:01:36,912 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) 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) [2022-11-19 07:01:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:36,982 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2022-11-19 07:01:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:01:36,984 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 [2022-11-19 07:01:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:36,994 INFO L225 Difference]: With dead ends: 114 [2022-11-19 07:01:36,994 INFO L226 Difference]: Without dead ends: 53 [2022-11-19 07:01:36,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:01:37,001 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:37,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:01:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-19 07:01:37,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-19 07:01:37,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 07:01:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2022-11-19 07:01:37,048 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 21 [2022-11-19 07:01:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:37,049 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2022-11-19 07:01:37,049 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) [2022-11-19 07:01:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2022-11-19 07:01:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 07:01:37,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:37,052 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] [2022-11-19 07:01:37,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:01:37,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:37,054 INFO L85 PathProgramCache]: Analyzing trace with hash -861027973, now seen corresponding path program 1 times [2022-11-19 07:01:37,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:37,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248959201] [2022-11-19 07:01:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:37,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:01:37,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:37,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248959201] [2022-11-19 07:01:37,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248959201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:37,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:37,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:01:37,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035367542] [2022-11-19 07:01:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:37,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:01:37,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:01:37,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:37,217 INFO L87 Difference]: Start difference. First operand 53 states and 68 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) [2022-11-19 07:01:37,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:37,296 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2022-11-19 07:01:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:01:37,297 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 [2022-11-19 07:01:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:37,298 INFO L225 Difference]: With dead ends: 83 [2022-11-19 07:01:37,298 INFO L226 Difference]: Without dead ends: 45 [2022-11-19 07:01:37,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:37,300 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:37,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:01:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-19 07:01:37,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-19 07:01:37,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 36 states have internal predecessors, (39), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-19 07:01:37,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-11-19 07:01:37,323 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 22 [2022-11-19 07:01:37,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:37,324 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-11-19 07:01:37,324 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) [2022-11-19 07:01:37,324 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-11-19 07:01:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 07:01:37,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:37,325 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] [2022-11-19 07:01:37,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:01:37,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:37,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:37,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1265715326, now seen corresponding path program 1 times [2022-11-19 07:01:37,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:37,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406464844] [2022-11-19 07:01:37,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:37,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:01:37,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:37,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406464844] [2022-11-19 07:01:37,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406464844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:37,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:37,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:01:37,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059050886] [2022-11-19 07:01:37,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:37,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:01:37,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:37,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:01:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:37,432 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-19 07:01:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:37,469 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2022-11-19 07:01:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:01:37,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 24 [2022-11-19 07:01:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:37,471 INFO L225 Difference]: With dead ends: 88 [2022-11-19 07:01:37,471 INFO L226 Difference]: Without dead ends: 45 [2022-11-19 07:01:37,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:37,473 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:37,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 41 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:01:37,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-19 07:01:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-19 07:01:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 36 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-19 07:01:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2022-11-19 07:01:37,483 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 24 [2022-11-19 07:01:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:37,485 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2022-11-19 07:01:37,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-19 07:01:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2022-11-19 07:01:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:37,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:37,487 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] [2022-11-19 07:01:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:01:37,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash -715277681, now seen corresponding path program 1 times [2022-11-19 07:01:37,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:37,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015870240] [2022-11-19 07:01:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:37,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:01:37,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:37,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015870240] [2022-11-19 07:01:37,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015870240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:37,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:37,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:01:37,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063284868] [2022-11-19 07:01:37,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:37,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:01:37,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:37,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:01:37,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:37,619 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2022-11-19 07:01:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:37,718 INFO L93 Difference]: Finished difference Result 125 states and 159 transitions. [2022-11-19 07:01:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:01:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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 [2022-11-19 07:01:37,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:37,722 INFO L225 Difference]: With dead ends: 125 [2022-11-19 07:01:37,723 INFO L226 Difference]: Without dead ends: 82 [2022-11-19 07:01:37,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:37,724 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 36 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:37,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 97 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:01:37,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-19 07:01:37,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2022-11-19 07:01:37,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 60 states have internal predecessors, (67), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2022-11-19 07:01:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2022-11-19 07:01:37,760 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 27 [2022-11-19 07:01:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:37,761 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2022-11-19 07:01:37,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2022-11-19 07:01:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2022-11-19 07:01:37,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-19 07:01:37,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:37,765 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:37,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:01:37,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:37,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:37,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2083189764, now seen corresponding path program 1 times [2022-11-19 07:01:37,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:37,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563599828] [2022-11-19 07:01:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:37,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:01:38,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:38,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563599828] [2022-11-19 07:01:38,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563599828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:38,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:38,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:01:38,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114059988] [2022-11-19 07:01:38,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:38,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:01:38,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:38,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:01:38,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:01:38,227 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:01:38,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:38,441 INFO L93 Difference]: Finished difference Result 241 states and 298 transitions. [2022-11-19 07:01:38,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:01:38,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 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 32 [2022-11-19 07:01:38,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:38,443 INFO L225 Difference]: With dead ends: 241 [2022-11-19 07:01:38,443 INFO L226 Difference]: Without dead ends: 163 [2022-11-19 07:01:38,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:38,446 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 81 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:38,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 214 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:01:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-19 07:01:38,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 157. [2022-11-19 07:01:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 102 states have (on average 1.2450980392156863) internal successors, (127), 114 states have internal predecessors, (127), 29 states have call successors, (29), 25 states have call predecessors, (29), 25 states have return successors, (38), 27 states have call predecessors, (38), 29 states have call successors, (38) [2022-11-19 07:01:38,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 194 transitions. [2022-11-19 07:01:38,473 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 194 transitions. Word has length 32 [2022-11-19 07:01:38,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:38,474 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 194 transitions. [2022-11-19 07:01:38,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:01:38,474 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 194 transitions. [2022-11-19 07:01:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 07:01:38,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:38,476 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:38,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:01:38,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:38,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:38,477 INFO L85 PathProgramCache]: Analyzing trace with hash -600228651, now seen corresponding path program 1 times [2022-11-19 07:01:38,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:38,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630075332] [2022-11-19 07:01:38,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:38,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:01:38,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:38,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630075332] [2022-11-19 07:01:38,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630075332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:38,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:38,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:01:38,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239929820] [2022-11-19 07:01:38,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:38,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:01:38,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:38,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:01:38,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:01:38,791 INFO L87 Difference]: Start difference. First operand 157 states and 194 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:01:39,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:39,400 INFO L93 Difference]: Finished difference Result 372 states and 470 transitions. [2022-11-19 07:01:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:01:39,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2022-11-19 07:01:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:39,411 INFO L225 Difference]: With dead ends: 372 [2022-11-19 07:01:39,411 INFO L226 Difference]: Without dead ends: 266 [2022-11-19 07:01:39,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:01:39,418 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 164 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:39,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 236 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:01:39,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-19 07:01:39,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 234. [2022-11-19 07:01:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 157 states have (on average 1.2547770700636942) internal successors, (197), 174 states have internal predecessors, (197), 40 states have call successors, (40), 31 states have call predecessors, (40), 36 states have return successors, (55), 42 states have call predecessors, (55), 40 states have call successors, (55) [2022-11-19 07:01:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 292 transitions. [2022-11-19 07:01:39,477 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 292 transitions. Word has length 35 [2022-11-19 07:01:39,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:39,477 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 292 transitions. [2022-11-19 07:01:39,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:01:39,478 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 292 transitions. [2022-11-19 07:01:39,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 07:01:39,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:39,479 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:39,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:01:39,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:39,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:39,480 INFO L85 PathProgramCache]: Analyzing trace with hash -175161021, now seen corresponding path program 1 times [2022-11-19 07:01:39,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:39,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326087426] [2022-11-19 07:01:39,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:39,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:01:39,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:39,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326087426] [2022-11-19 07:01:39,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326087426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:39,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:39,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:01:39,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835638507] [2022-11-19 07:01:39,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:39,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:01:39,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:01:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:39,601 INFO L87 Difference]: Start difference. First operand 234 states and 292 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 07:01:39,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:39,919 INFO L93 Difference]: Finished difference Result 499 states and 629 transitions. [2022-11-19 07:01:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:01:39,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-11-19 07:01:39,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:39,925 INFO L225 Difference]: With dead ends: 499 [2022-11-19 07:01:39,925 INFO L226 Difference]: Without dead ends: 267 [2022-11-19 07:01:39,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:01:39,931 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 58 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:39,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 224 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:01:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-19 07:01:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 239. [2022-11-19 07:01:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 160 states have (on average 1.21875) internal successors, (195), 177 states have internal predecessors, (195), 41 states have call successors, (41), 31 states have call predecessors, (41), 37 states have return successors, (58), 43 states have call predecessors, (58), 41 states have call successors, (58) [2022-11-19 07:01:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 294 transitions. [2022-11-19 07:01:39,986 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 294 transitions. Word has length 35 [2022-11-19 07:01:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:39,986 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 294 transitions. [2022-11-19 07:01:39,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 07:01:39,987 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 294 transitions. [2022-11-19 07:01:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:01:39,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:39,991 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:39,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:01:39,992 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1855284806, now seen corresponding path program 1 times [2022-11-19 07:01:39,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:39,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276253184] [2022-11-19 07:01:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:39,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:01:40,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:40,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276253184] [2022-11-19 07:01:40,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276253184] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:40,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400724355] [2022-11-19 07:01:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:40,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:40,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:40,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:40,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:01:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:40,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 07:01:40,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:40,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:01:41,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400724355] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:41,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1765853099] [2022-11-19 07:01:41,218 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-19 07:01:41,218 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:01:41,223 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:01:41,228 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:01:41,229 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:01:44,974 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 52 for LOIs [2022-11-19 07:01:44,984 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 51 for LOIs [2022-11-19 07:01:45,358 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 44 for LOIs [2022-11-19 07:01:45,365 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2022-11-19 07:01:45,399 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:01:49,668 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4184#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| 2)) (= |timeShift_getWaterLevel_~retValue_acc~4#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~4#1| ~waterLevel~0) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= 2 |timeShift_getWaterLevel_~retValue_acc~4#1|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2022-11-19 07:01:49,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:01:49,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:01:49,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 14 [2022-11-19 07:01:49,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669830784] [2022-11-19 07:01:49,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:49,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 07:01:49,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:49,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 07:01:49,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1291, Unknown=0, NotChecked=0, Total=1482 [2022-11-19 07:01:49,672 INFO L87 Difference]: Start difference. First operand 239 states and 294 transitions. Second operand has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-19 07:01:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:51,435 INFO L93 Difference]: Finished difference Result 680 states and 863 transitions. [2022-11-19 07:01:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-19 07:01:51,436 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 60 [2022-11-19 07:01:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:51,439 INFO L225 Difference]: With dead ends: 680 [2022-11-19 07:01:51,439 INFO L226 Difference]: Without dead ends: 443 [2022-11-19 07:01:51,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 162 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=551, Invalid=3355, Unknown=0, NotChecked=0, Total=3906 [2022-11-19 07:01:51,442 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 377 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:51,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 338 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:01:51,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-19 07:01:51,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 393. [2022-11-19 07:01:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 262 states have (on average 1.183206106870229) internal successors, (310), 294 states have internal predecessors, (310), 63 states have call successors, (63), 50 states have call predecessors, (63), 67 states have return successors, (108), 67 states have call predecessors, (108), 63 states have call successors, (108) [2022-11-19 07:01:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 481 transitions. [2022-11-19 07:01:51,510 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 481 transitions. Word has length 60 [2022-11-19 07:01:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:51,511 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 481 transitions. [2022-11-19 07:01:51,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-19 07:01:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 481 transitions. [2022-11-19 07:01:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 07:01:51,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:51,513 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:51,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:51,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:51,719 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:51,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:51,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1919116790, now seen corresponding path program 1 times [2022-11-19 07:01:51,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:51,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396702736] [2022-11-19 07:01:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:51,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:01:52,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:52,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396702736] [2022-11-19 07:01:52,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396702736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:52,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7564327] [2022-11-19 07:01:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:52,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:52,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:52,019 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:52,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:01:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:52,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:01:52,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:01:52,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-19 07:01:52,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7564327] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:52,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [806837747] [2022-11-19 07:01:52,287 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2022-11-19 07:01:52,288 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:01:52,288 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:01:52,288 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:01:52,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:01:54,458 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 32 for LOIs [2022-11-19 07:01:54,462 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 29 for LOIs [2022-11-19 07:01:54,678 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 53 for LOIs [2022-11-19 07:01:54,690 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 73 for LOIs [2022-11-19 07:01:55,011 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 50 for LOIs [2022-11-19 07:01:55,018 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:01:58,997 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6318#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 0)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| 2)) (= |timeShift_getWaterLevel_~retValue_acc~4#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~4#1| ~waterLevel~0) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (= ~methaneLevelCritical~0 0) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (= ~head~0.offset 0) (<= |old(~pumpRunning~0)| 2147483647) (= 1 ~systemActive~0) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~4#1| 2147483648)) (<= 0 (+ |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 2147483648)) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 2147483647) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 07:01:58,997 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:01:58,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:01:58,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 14 [2022-11-19 07:01:58,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939752603] [2022-11-19 07:01:58,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:58,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 07:01:58,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:58,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 07:01:59,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1723, Unknown=0, NotChecked=0, Total=1980 [2022-11-19 07:01:59,000 INFO L87 Difference]: Start difference. First operand 393 states and 481 transitions. Second operand has 14 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-19 07:02:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:00,123 INFO L93 Difference]: Finished difference Result 762 states and 954 transitions. [2022-11-19 07:02:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 07:02:00,124 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) Word has length 63 [2022-11-19 07:02:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:00,127 INFO L225 Difference]: With dead ends: 762 [2022-11-19 07:02:00,127 INFO L226 Difference]: Without dead ends: 464 [2022-11-19 07:02:00,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=594, Invalid=4236, Unknown=0, NotChecked=0, Total=4830 [2022-11-19 07:02:00,130 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 346 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:00,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 353 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:02:00,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-11-19 07:02:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 433. [2022-11-19 07:02:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 285 states have (on average 1.1578947368421053) internal successors, (330), 320 states have internal predecessors, (330), 71 states have call successors, (71), 62 states have call predecessors, (71), 76 states have return successors, (116), 74 states have call predecessors, (116), 71 states have call successors, (116) [2022-11-19 07:02:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 517 transitions. [2022-11-19 07:02:00,185 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 517 transitions. Word has length 63 [2022-11-19 07:02:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:00,186 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 517 transitions. [2022-11-19 07:02:00,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-19 07:02:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 517 transitions. [2022-11-19 07:02:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 07:02:00,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:00,188 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:00,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:00,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:00,401 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:02:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:00,401 INFO L85 PathProgramCache]: Analyzing trace with hash -658251347, now seen corresponding path program 1 times [2022-11-19 07:02:00,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:00,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497614712] [2022-11-19 07:02:00,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:00,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:02:01,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:01,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497614712] [2022-11-19 07:02:01,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497614712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:01,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214619984] [2022-11-19 07:02:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:01,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:01,359 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:01,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:02:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:01,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-19 07:02:01,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:02:01,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:02:02,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214619984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:02:02,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [803679410] [2022-11-19 07:02:02,622 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-19 07:02:02,622 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:02:02,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:02:02,623 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:02:02,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:02:05,341 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 35 for LOIs [2022-11-19 07:02:05,346 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 49 for LOIs [2022-11-19 07:02:06,012 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 22 for LOIs [2022-11-19 07:02:06,014 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 29 for LOIs [2022-11-19 07:02:06,045 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:02:11,432 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8798#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 0)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| 2)) (= |timeShift_getWaterLevel_~retValue_acc~4#1| |timeShift_getWaterLevel_#res#1|) (<= 0 |#NULL.base|) (= |timeShift_getWaterLevel_~retValue_acc~4#1| ~waterLevel~0) (<= 0 |old(~pumpRunning~0)|) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 1) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (= ~head~0.offset 0) (<= 1 ~systemActive~0) (<= |old(~pumpRunning~0)| 2147483647) (<= |#NULL.offset| 0) (<= ~methaneLevelCritical~0 0) (<= 0 ~head~0.base) (<= |#NULL.base| 0) (<= 0 ~methaneLevelCritical~0) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~4#1| 2147483648)) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= 0 ~pumpRunning~0) (<= ~head~0.base 0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (<= 0 |#NULL.offset|) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4))' at error location [2022-11-19 07:02:11,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:02:11,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:02:11,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 11] total 32 [2022-11-19 07:02:11,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651847566] [2022-11-19 07:02:11,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:02:11,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-19 07:02:11,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:11,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-19 07:02:11,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=3154, Unknown=0, NotChecked=0, Total=3540 [2022-11-19 07:02:11,436 INFO L87 Difference]: Start difference. First operand 433 states and 517 transitions. Second operand has 32 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 17 states have call successors, (29), 9 states have call predecessors, (29), 12 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) [2022-11-19 07:02:16,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:16,145 INFO L93 Difference]: Finished difference Result 987 states and 1230 transitions. [2022-11-19 07:02:16,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-19 07:02:16,146 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 17 states have call successors, (29), 9 states have call predecessors, (29), 12 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) Word has length 85 [2022-11-19 07:02:16,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:16,147 INFO L225 Difference]: With dead ends: 987 [2022-11-19 07:02:16,147 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:02:16,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 247 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5710 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1979, Invalid=13027, Unknown=0, NotChecked=0, Total=15006 [2022-11-19 07:02:16,154 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 962 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:16,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 769 Invalid, 3062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 07:02:16,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:02:16,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:02:16,156 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) [2022-11-19 07:02:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:02:16,156 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2022-11-19 07:02:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:16,156 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:02:16,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 17 states have call successors, (29), 9 states have call predecessors, (29), 12 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) [2022-11-19 07:02:16,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:02:16,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:02:16,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:02:16,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:16,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:16,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:02:23,514 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 822 828) no Hoare annotation was computed. [2022-11-19 07:02:23,514 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 822 828) the Hoare annotation is: true [2022-11-19 07:02:23,514 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 232 243) the Hoare annotation is: true [2022-11-19 07:02:23,514 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 232 243) no Hoare annotation was computed. [2022-11-19 07:02:23,515 INFO L895 garLoopResultBuilder]: At program point L870(line 870) the Hoare annotation is: (let ((.cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse6 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse2 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse7 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 (not (<= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 (or .cse3 .cse4) (<= ~waterLevel~0 0) .cse5) .cse6) (or .cse0 .cse1 .cse4 (not (<= |old(~waterLevel~0)| 0)) .cse6) (or (and .cse2 .cse3 .cse5) .cse1 .cse7 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) .cse1 .cse7))) [2022-11-19 07:02:23,515 INFO L895 garLoopResultBuilder]: At program point L705(line 705) the Hoare annotation is: (let ((.cse9 (+ ~waterLevel~0 1))) (let ((.cse0 (not (<= |old(~waterLevel~0)| 1))) (.cse5 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse7 (not (= ~switchedOnBeforeTS~0 0))) (.cse3 (= ~pumpRunning~0 0)) (.cse10 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse11 (= |old(~waterLevel~0)| .cse9)) (.cse4 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| ~waterLevel~0)) (.cse6 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2 (and .cse3 .cse4 .cse5 .cse6)) (let ((.cse8 (or (and .cse11 (< 0 |old(~waterLevel~0)|)) .cse5))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 .cse2 (and .cse7 .cse3 .cse4 .cse8 (or (<= |old(~waterLevel~0)| 0) (<= .cse9 |old(~waterLevel~0)|))) (and .cse10 .cse4 (<= ~waterLevel~0 0) .cse8 .cse6) (= |old(~switchedOnBeforeTS~0)| 0))) (let ((.cse12 (or .cse1 (<= |old(~waterLevel~0)| ~waterLevel~0)))) (or .cse2 (and .cse7 .cse3 .cse4 (= ~waterLevel~0 1) .cse12) (and .cse10 .cse11 .cse4 .cse6 .cse12) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))))) [2022-11-19 07:02:23,516 INFO L899 garLoopResultBuilder]: For program point L705-1(line 705) no Hoare annotation was computed. [2022-11-19 07:02:23,516 INFO L895 garLoopResultBuilder]: At program point L875(line 875) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (<= |old(~waterLevel~0)| 2))) (.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 (and .cse1 (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse2) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1) .cse2 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (not (<= |old(~waterLevel~0)| 1)) .cse0 (= |old(~switchedOnBeforeTS~0)| 0)))) [2022-11-19 07:02:23,516 INFO L895 garLoopResultBuilder]: At program point L875-1(lines 856 880) the Hoare annotation is: (let ((.cse10 (+ ~waterLevel~0 1))) (let ((.cse5 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse6 (<= |old(~waterLevel~0)| 0)) (.cse7 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse9 (= |old(~waterLevel~0)| .cse10)) (.cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse11 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse8 (not (= ~switchedOnBeforeTS~0 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse4 (not (<= |old(~waterLevel~0)| 2)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (and (= 2 ~waterLevel~0) .cse0) .cse1 (and .cse2 .cse0 .cse3) .cse4) (or .cse5 .cse1 .cse0 (not .cse6) .cse7) (or .cse5 .cse1 (and .cse8 .cse2 (or .cse9 .cse0) (or .cse6 (<= .cse10 |old(~waterLevel~0)|))) (and .cse11 (or .cse9 (not (< 0 |old(~waterLevel~0)|))) .cse3) .cse4 .cse7) (or (and .cse11 .cse9 .cse3) .cse1 (and .cse0 (or .cse11 (= ~pumpRunning~0 1))) (and .cse8 .cse2 (= ~waterLevel~0 1)) .cse4 (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-19 07:02:23,517 INFO L895 garLoopResultBuilder]: At program point L809-1(lines 809 815) the Hoare annotation is: (let ((.cse10 (+ ~waterLevel~0 1))) (let ((.cse5 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse6 (<= |old(~waterLevel~0)| 0)) (.cse7 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse9 (= |old(~waterLevel~0)| .cse10)) (.cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse11 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse8 (not (= ~switchedOnBeforeTS~0 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse4 (not (<= |old(~waterLevel~0)| 2)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (and (= 2 ~waterLevel~0) .cse0) .cse1 (and .cse2 .cse0 .cse3) .cse4) (or .cse5 .cse1 .cse0 (not .cse6) .cse7) (or .cse5 .cse1 (and .cse8 .cse2 (or .cse9 .cse0) (or .cse6 (<= .cse10 |old(~waterLevel~0)|))) (and .cse11 (or .cse9 (not (< 0 |old(~waterLevel~0)|))) .cse3) .cse4 .cse7) (or (and .cse11 .cse9 .cse3) .cse1 (and .cse0 (or .cse11 (= ~pumpRunning~0 1))) (and .cse8 .cse2 (= ~waterLevel~0 1)) .cse4 (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-19 07:02:23,517 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~waterLevel~0)| 2)))) (and (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (not (<= |old(~waterLevel~0)| 1)) .cse0) (or .cse0 .cse1 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1))) [2022-11-19 07:02:23,517 INFO L895 garLoopResultBuilder]: At program point L690(line 690) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 (and .cse1 .cse2) .cse3 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse3 (and (not (= ~switchedOnBeforeTS~0 0)) (= ~pumpRunning~0 0) .cse2) (= |old(~switchedOnBeforeTS~0)| 0)) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 (and .cse1 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse3))) [2022-11-19 07:02:23,518 INFO L895 garLoopResultBuilder]: At program point L690-1(line 690) the Hoare annotation is: (let ((.cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse6 (not (<= |old(~waterLevel~0)| 2))) (.cse3 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse4 (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__2_#t~ret34#1|)) (.cse5 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse7 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 .cse2) (or .cse0 .cse1 (and .cse3 .cse4 .cse5 .cse2) .cse6 (= |old(~switchedOnBeforeTS~0)| 0)) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) .cse1 (and (= ~pumpRunning~0 0) .cse4 .cse5)) (or .cse0 .cse1 .cse6 .cse2 .cse7) (or .cse1 .cse6 (and .cse3 .cse4 .cse5) .cse7))) [2022-11-19 07:02:23,518 INFO L899 garLoopResultBuilder]: For program point L707(lines 707 717) no Hoare annotation was computed. [2022-11-19 07:02:23,518 INFO L899 garLoopResultBuilder]: For program point L802-2(lines 798 820) no Hoare annotation was computed. [2022-11-19 07:02:23,519 INFO L895 garLoopResultBuilder]: At program point L864(lines 864 872) the Hoare annotation is: (let ((.cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse6 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse2 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse7 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 (not (<= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 (or .cse3 .cse4) (<= ~waterLevel~0 0) .cse5) .cse6) (or .cse0 .cse1 .cse4 (not (<= |old(~waterLevel~0)| 0)) .cse6) (or (and .cse2 .cse3 .cse5) .cse1 .cse7 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) .cse1 .cse7))) [2022-11-19 07:02:23,519 INFO L899 garLoopResultBuilder]: For program point L703(lines 703 720) no Hoare annotation was computed. [2022-11-19 07:02:23,519 INFO L895 garLoopResultBuilder]: At program point L703-1(lines 695 723) the Hoare annotation is: (let ((.cse3 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| ~waterLevel~0)) (.cse5 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse8 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse6 (+ ~waterLevel~0 1)) (.cse9 (= 1 ~systemActive~0))) (let ((.cse13 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not .cse9)) (.cse1 (not (= ~switchedOnBeforeTS~0 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse12 (= |old(~waterLevel~0)| .cse6)) (.cse11 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse14 (and .cse9 .cse3 .cse5 (or .cse8 (= ~pumpRunning~0 1)))) (.cse7 (not (<= |old(~waterLevel~0)| 2)))) (and (let ((.cse10 (< 0 |old(~waterLevel~0)|))) (let ((.cse4 (and .cse12 .cse10))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 (and .cse1 .cse2 .cse3 (or .cse4 .cse5) (or (<= |old(~waterLevel~0)| 0) (<= .cse6 |old(~waterLevel~0)|))) .cse7 (and .cse8 .cse9 .cse3 (or (and (not .cse10) .cse5) .cse4) .cse11) (= |old(~switchedOnBeforeTS~0)| 0)))) (or .cse13 .cse0 .cse14 .cse7) (or (not (<= |old(~waterLevel~0)| 1)) .cse13 (and .cse2 .cse11) .cse0) (or .cse0 (and .cse1 .cse2 .cse3 (= ~waterLevel~0 1)) (and .cse8 .cse12 .cse9 .cse3 .cse11) .cse14 .cse7 (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-19 07:02:23,520 INFO L895 garLoopResultBuilder]: At program point L860(lines 860 877) the Hoare annotation is: (let ((.cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse6 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse1 (not (<= |old(~waterLevel~0)| 1))) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse7 (= ~pumpRunning~0 0)) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (and (or .cse0 .cse1 .cse2 (and .cse3 (or (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse4) (<= ~waterLevel~0 0) .cse5) .cse6) (or .cse0 .cse2 .cse4 (not (<= |old(~waterLevel~0)| 0)) .cse6) (or .cse1 (not (= |old(~pumpRunning~0)| 0)) .cse2 (and .cse7 .cse4 .cse5)) (or .cse2 (not (<= |old(~waterLevel~0)| 2)) (and .cse3 (or (and (not .cse7) (<= ~waterLevel~0 1) (<= 1 ~waterLevel~0)) (and .cse7 (<= 2 ~waterLevel~0) (<= ~waterLevel~0 2))) .cse5) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-19 07:02:23,520 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 795 821) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 (and .cse1 .cse2) .cse3 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse3 (and (not (= ~switchedOnBeforeTS~0 0)) (= ~pumpRunning~0 0) .cse2) (= |old(~switchedOnBeforeTS~0)| 0)) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 (and .cse1 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse3))) [2022-11-19 07:02:23,520 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 795 821) no Hoare annotation was computed. [2022-11-19 07:02:23,520 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-19 07:02:23,520 INFO L899 garLoopResultBuilder]: For program point L708(lines 708 714) no Hoare annotation was computed. [2022-11-19 07:02:23,521 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 99 128) no Hoare annotation was computed. [2022-11-19 07:02:23,521 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 99 128) the Hoare annotation is: true [2022-11-19 07:02:23,521 INFO L902 garLoopResultBuilder]: At program point L124(lines 99 128) the Hoare annotation is: true [2022-11-19 07:02:23,521 INFO L899 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2022-11-19 07:02:23,521 INFO L899 garLoopResultBuilder]: For program point L113(lines 113 117) no Hoare annotation was computed. [2022-11-19 07:02:23,522 INFO L902 garLoopResultBuilder]: At program point L113-1(lines 113 117) the Hoare annotation is: true [2022-11-19 07:02:23,522 INFO L902 garLoopResultBuilder]: At program point L109-2(lines 109 123) the Hoare annotation is: true [2022-11-19 07:02:23,522 INFO L902 garLoopResultBuilder]: At program point L105(line 105) the Hoare annotation is: true [2022-11-19 07:02:23,522 INFO L899 garLoopResultBuilder]: For program point L105-1(line 105) no Hoare annotation was computed. [2022-11-19 07:02:23,522 INFO L895 garLoopResultBuilder]: At program point L771-2(lines 765 776) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (<= ~waterLevel~0 1) .cse0 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (= ~pumpRunning~0 0) .cse0 .cse1 (<= ~waterLevel~0 2)))) [2022-11-19 07:02:23,522 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-19 07:02:23,523 INFO L899 garLoopResultBuilder]: For program point L755(lines 755 761) no Hoare annotation was computed. [2022-11-19 07:02:23,523 INFO L899 garLoopResultBuilder]: For program point L755-1(lines 755 761) no Hoare annotation was computed. [2022-11-19 07:02:23,523 INFO L902 garLoopResultBuilder]: At program point L784(lines 725 788) the Hoare annotation is: true [2022-11-19 07:02:23,523 INFO L895 garLoopResultBuilder]: At program point L747(line 747) the Hoare annotation is: (let ((.cse2 (<= ~waterLevel~0 1)) (.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and .cse2 .cse0 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (= ~pumpRunning~0 0) .cse2 .cse0 .cse1))) [2022-11-19 07:02:23,523 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:02:23,524 INFO L895 garLoopResultBuilder]: At program point L186(lines 186 193) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 1) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) [2022-11-19 07:02:23,524 INFO L902 garLoopResultBuilder]: At program point L186-2(lines 186 193) the Hoare annotation is: true [2022-11-19 07:02:23,524 INFO L895 garLoopResultBuilder]: At program point L781(lines 734 782) the Hoare annotation is: false [2022-11-19 07:02:23,524 INFO L899 garLoopResultBuilder]: For program point L736(lines 735 780) no Hoare annotation was computed. [2022-11-19 07:02:23,524 INFO L895 garLoopResultBuilder]: At program point L757(line 757) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (<= ~waterLevel~0 1) .cse0 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (= ~pumpRunning~0 0) .cse0 .cse1 (<= ~waterLevel~0 2)))) [2022-11-19 07:02:23,525 INFO L895 garLoopResultBuilder]: At program point L778(lines 735 780) the Hoare annotation is: (let ((.cse2 (<= ~waterLevel~0 1)) (.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and .cse2 .cse0 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (= ~pumpRunning~0 0) .cse2 .cse0 .cse1))) [2022-11-19 07:02:23,525 INFO L899 garLoopResultBuilder]: For program point L745(lines 745 751) no Hoare annotation was computed. [2022-11-19 07:02:23,525 INFO L899 garLoopResultBuilder]: For program point L745-1(lines 745 751) no Hoare annotation was computed. [2022-11-19 07:02:23,525 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 830 854) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2022-11-19 07:02:23,525 INFO L895 garLoopResultBuilder]: At program point L849(line 849) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= ~waterLevel~0 2))) (.cse2 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or .cse0 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse2) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1 .cse2))) [2022-11-19 07:02:23,526 INFO L899 garLoopResultBuilder]: For program point L849-1(lines 830 854) no Hoare annotation was computed. [2022-11-19 07:02:23,526 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 830 854) no Hoare annotation was computed. [2022-11-19 07:02:23,526 INFO L895 garLoopResultBuilder]: At program point L844(line 844) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (<= ~waterLevel~0 2))) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or .cse0 (= |processEnvironment__wrappee__highWaterSensor_~tmp~6#1| 0) (not (<= ~waterLevel~0 1)) .cse1) (or .cse0 .cse2 (= ~switchedOnBeforeTS~0 0) .cse1) (or .cse0 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse1))) [2022-11-19 07:02:23,526 INFO L895 garLoopResultBuilder]: At program point L838(lines 838 846) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (<= ~waterLevel~0 2))) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or .cse0 (= |processEnvironment__wrappee__highWaterSensor_~tmp~6#1| 0) (not (<= ~waterLevel~0 1)) .cse1) (or .cse0 .cse2 (= ~switchedOnBeforeTS~0 0) .cse1) (or .cse0 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse1))) [2022-11-19 07:02:23,526 INFO L895 garLoopResultBuilder]: At program point L834(lines 834 851) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (not (<= ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2022-11-19 07:02:23,527 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 220 231) no Hoare annotation was computed. [2022-11-19 07:02:23,527 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 220 231) the Hoare annotation is: (let ((.cse2 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse2 .cse0 (not (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse1) (or .cse2 (not (= ~pumpRunning~0 0)) .cse0 .cse1))) [2022-11-19 07:02:23,527 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 926 934) no Hoare annotation was computed. [2022-11-19 07:02:23,527 INFO L902 garLoopResultBuilder]: At program point isPumpRunningENTRY(lines 926 934) the Hoare annotation is: true [2022-11-19 07:02:23,531 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:23,533 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:02:23,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:02:23 BoogieIcfgContainer [2022-11-19 07:02:23,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:02:23,561 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:02:23,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:02:23,562 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:02:23,562 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:36" (3/4) ... [2022-11-19 07:02:23,566 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:02:23,571 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-19 07:02:23,572 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-19 07:02:23,572 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-19 07:02:23,572 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-19 07:02:23,572 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 07:02:23,572 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-19 07:02:23,573 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2022-11-19 07:02:23,579 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 54 nodes and edges [2022-11-19 07:02:23,580 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-19 07:02:23,580 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 07:02:23,581 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:02:23,581 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:02:23,606 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || pumpRunning == switchedOnBeforeTS) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || pumpRunning == switchedOnBeforeTS) || !(2 <= \old(waterLevel)))) && (((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || ((pumpRunning == \old(pumpRunning) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel))) [2022-11-19 07:02:23,607 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || (2 == waterLevel && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 0)) || \old(switchedOnBeforeTS) == 0)) && (((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && (\old(waterLevel) == waterLevel + 1 || \old(waterLevel) == waterLevel)) && (\old(waterLevel) <= 0 || waterLevel + 1 <= \old(waterLevel)))) || ((pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel + 1 || !(0 < \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && (((((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && pumpRunning == switchedOnBeforeTS) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || pumpRunning == 1))) || ((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-19 07:02:23,607 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || ((((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && tmp == waterLevel) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || \old(waterLevel) == waterLevel)) && (\old(waterLevel) <= 0 || waterLevel + 1 <= \old(waterLevel)))) || !(\old(waterLevel) <= 2)) || ((((pumpRunning == \old(pumpRunning) && 1 == systemActive) && tmp == waterLevel) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS)) || \old(switchedOnBeforeTS) == 0) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (((1 == systemActive && tmp == waterLevel) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || pumpRunning == 1))) || !(\old(waterLevel) <= 2))) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && pumpRunning == switchedOnBeforeTS)) || !(1 == systemActive))) && (((((!(1 == systemActive) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && tmp == waterLevel) && waterLevel == 1)) || ((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && 1 == systemActive) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || (((1 == systemActive && tmp == waterLevel) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || pumpRunning == 1))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-19 07:02:23,608 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel + 1 || \old(waterLevel) == waterLevel)) && waterLevel <= 0) && pumpRunning == switchedOnBeforeTS)) || \old(switchedOnBeforeTS) == 0) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 0)) || \old(switchedOnBeforeTS) == 0)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS))) && (((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || ((pumpRunning == \old(pumpRunning) && (((!(pumpRunning == 0) && waterLevel <= 1) && 1 <= waterLevel) || ((pumpRunning == 0 && 2 <= waterLevel) && waterLevel <= 2))) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel))) [2022-11-19 07:02:23,608 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(1 == systemActive)) && ((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) [2022-11-19 07:02:23,608 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || (2 == waterLevel && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 0)) || \old(switchedOnBeforeTS) == 0)) && (((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && (\old(waterLevel) == waterLevel + 1 || \old(waterLevel) == waterLevel)) && (\old(waterLevel) <= 0 || waterLevel + 1 <= \old(waterLevel)))) || ((pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel + 1 || !(0 < \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && (((((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && pumpRunning == switchedOnBeforeTS) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || pumpRunning == 1))) || ((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-19 07:02:23,608 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(1 == systemActive) || !(waterLevel <= 2)) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning)) [2022-11-19 07:02:23,609 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel + 1 || \old(waterLevel) == waterLevel)) && waterLevel <= 0) && pumpRunning == switchedOnBeforeTS)) || \old(switchedOnBeforeTS) == 0) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 0)) || \old(switchedOnBeforeTS) == 0)) && (((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && pumpRunning == switchedOnBeforeTS) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) [2022-11-19 07:02:23,610 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(1 == systemActive) || tmp == 0) || !(waterLevel <= 1)) || !(switchedOnBeforeTS == \old(pumpRunning))) && (((!(1 == systemActive) || !(waterLevel <= 2)) || switchedOnBeforeTS == 0) || !(switchedOnBeforeTS == \old(pumpRunning)))) && (((!(1 == systemActive) || !(waterLevel <= 2)) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning))) [2022-11-19 07:02:23,642 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:02:23,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:02:23,643 INFO L158 Benchmark]: Toolchain (without parser) took 48517.46ms. Allocated memory was 113.2MB in the beginning and 497.0MB in the end (delta: 383.8MB). Free memory was 79.4MB in the beginning and 314.1MB in the end (delta: -234.7MB). Peak memory consumption was 148.1MB. Max. memory is 16.1GB. [2022-11-19 07:02:23,643 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:02:23,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 529.71ms. Allocated memory is still 113.2MB. Free memory was 79.4MB in the beginning and 78.8MB in the end (delta: 608.5kB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-11-19 07:02:23,644 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.60ms. Allocated memory is still 113.2MB. Free memory was 78.8MB in the beginning and 76.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:02:23,645 INFO L158 Benchmark]: Boogie Preprocessor took 53.72ms. Allocated memory is still 113.2MB. Free memory was 76.3MB in the beginning and 74.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:02:23,645 INFO L158 Benchmark]: RCFGBuilder took 774.79ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 74.9MB in the beginning and 104.6MB in the end (delta: -29.6MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-11-19 07:02:23,646 INFO L158 Benchmark]: TraceAbstraction took 46992.56ms. Allocated memory was 136.3MB in the beginning and 497.0MB in the end (delta: 360.7MB). Free memory was 103.8MB in the beginning and 320.4MB in the end (delta: -216.5MB). Peak memory consumption was 293.8MB. Max. memory is 16.1GB. [2022-11-19 07:02:23,646 INFO L158 Benchmark]: Witness Printer took 80.99ms. Allocated memory is still 497.0MB. Free memory was 320.4MB in the beginning and 314.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:02:23,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 529.71ms. Allocated memory is still 113.2MB. Free memory was 79.4MB in the beginning and 78.8MB in the end (delta: 608.5kB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.60ms. Allocated memory is still 113.2MB. Free memory was 78.8MB in the beginning and 76.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.72ms. Allocated memory is still 113.2MB. Free memory was 76.3MB in the beginning and 74.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 774.79ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 74.9MB in the beginning and 104.6MB in the end (delta: -29.6MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * TraceAbstraction took 46992.56ms. Allocated memory was 136.3MB in the beginning and 497.0MB in the end (delta: 360.7MB). Free memory was 103.8MB in the beginning and 320.4MB in the end (delta: -216.5MB). Peak memory consumption was 293.8MB. Max. memory is 16.1GB. * Witness Printer took 80.99ms. Allocated memory is still 497.0MB. Free memory was 320.4MB in the beginning and 314.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: 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 8 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.9s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2102 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2075 mSDsluCounter, 2406 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1794 mSDsCounter, 1218 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4543 IncrementalHoareTripleChecker+Invalid, 5761 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1218 mSolverCounterUnsat, 612 mSDtfsCounter, 4543 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 896 GetRequests, 604 SyntacticMatches, 8 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8615 ImplicationChecksByTransitivity, 18.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=433occurred in iteration=9, InterpolantAutomatonStates: 176, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 149 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 35 LocationsWithAnnotation, 1320 PreInvPairs, 1579 NumberOfFragments, 1711 HoareAnnotationTreeSize, 1320 FomulaSimplifications, 5816 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 35 FomulaSimplificationsInter, 29095 FormulaSimplificationTreeSizeReductionInter, 6.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 804 ConstructedInterpolants, 0 QuantifiedInterpolants, 3094 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1072 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 260/398 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: 54]: Loop Invariant Derived loop invariant: (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(1 == systemActive)) && ((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) - InvariantResult [Line: 834]: Loop Invariant Derived loop invariant: ((!(1 == systemActive) || !(waterLevel <= 2)) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning)) - InvariantResult [Line: 856]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || (2 == waterLevel && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 0)) || \old(switchedOnBeforeTS) == 0)) && (((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && (\old(waterLevel) == waterLevel + 1 || \old(waterLevel) == waterLevel)) && (\old(waterLevel) <= 0 || waterLevel + 1 <= \old(waterLevel)))) || ((pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel + 1 || !(0 < \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && (((((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && pumpRunning == switchedOnBeforeTS) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || pumpRunning == 1))) || ((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 809]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || (2 == waterLevel && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 0)) || \old(switchedOnBeforeTS) == 0)) && (((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && (\old(waterLevel) == waterLevel + 1 || \old(waterLevel) == waterLevel)) && (\old(waterLevel) <= 0 || waterLevel + 1 <= \old(waterLevel)))) || ((pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel + 1 || !(0 < \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && (((((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && pumpRunning == switchedOnBeforeTS) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || pumpRunning == 1))) || ((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 690]: Loop Invariant Derived loop invariant: ((((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || pumpRunning == switchedOnBeforeTS) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) <= 2)) || \old(switchedOnBeforeTS) == 0)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || pumpRunning == switchedOnBeforeTS) || !(2 <= \old(waterLevel)))) && (((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || ((pumpRunning == \old(pumpRunning) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 186]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 860]: Loop Invariant Derived loop invariant: ((((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel + 1 || \old(waterLevel) == waterLevel)) && waterLevel <= 0) && pumpRunning == switchedOnBeforeTS)) || \old(switchedOnBeforeTS) == 0) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 0)) || \old(switchedOnBeforeTS) == 0)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS))) && (((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || ((pumpRunning == \old(pumpRunning) && (((!(pumpRunning == 0) && waterLevel <= 1) && 1 <= waterLevel) || ((pumpRunning == 0 && 2 <= waterLevel) && waterLevel <= 2))) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 838]: Loop Invariant Derived loop invariant: ((((!(1 == systemActive) || tmp == 0) || !(waterLevel <= 1)) || !(switchedOnBeforeTS == \old(pumpRunning))) && (((!(1 == systemActive) || !(waterLevel <= 2)) || switchedOnBeforeTS == 0) || !(switchedOnBeforeTS == \old(pumpRunning)))) && (((!(1 == systemActive) || !(waterLevel <= 2)) || pumpRunning == switchedOnBeforeTS) || !(switchedOnBeforeTS == \old(pumpRunning))) - InvariantResult [Line: 734]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 695]: Loop Invariant Derived loop invariant: (((((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || ((((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && tmp == waterLevel) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || \old(waterLevel) == waterLevel)) && (\old(waterLevel) <= 0 || waterLevel + 1 <= \old(waterLevel)))) || !(\old(waterLevel) <= 2)) || ((((pumpRunning == \old(pumpRunning) && 1 == systemActive) && tmp == waterLevel) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS)) || \old(switchedOnBeforeTS) == 0) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (((1 == systemActive && tmp == waterLevel) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || pumpRunning == 1))) || !(\old(waterLevel) <= 2))) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && pumpRunning == switchedOnBeforeTS)) || !(1 == systemActive))) && (((((!(1 == systemActive) || (((!(switchedOnBeforeTS == 0) && pumpRunning == 0) && tmp == waterLevel) && waterLevel == 1)) || ((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && 1 == systemActive) && tmp == waterLevel) && pumpRunning == switchedOnBeforeTS)) || (((1 == systemActive && tmp == waterLevel) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || pumpRunning == 1))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 735]: Loop Invariant Derived loop invariant: (((2 == waterLevel && 1 == systemActive) && splverifierCounter == 0) || (((waterLevel <= 1 && 1 == systemActive) && splverifierCounter == 0) && pumpRunning == switchedOnBeforeTS)) || (((pumpRunning == 0 && waterLevel <= 1) && 1 == systemActive) && splverifierCounter == 0) - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 186]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && 1 == systemActive) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS - InvariantResult [Line: 725]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 864]: Loop Invariant Derived loop invariant: ((((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel + 1 || \old(waterLevel) == waterLevel)) && waterLevel <= 0) && pumpRunning == switchedOnBeforeTS)) || \old(switchedOnBeforeTS) == 0) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 0)) || \old(switchedOnBeforeTS) == 0)) && (((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && pumpRunning == switchedOnBeforeTS) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) RESULT: Ultimate proved your program to be correct! [2022-11-19 07:02:23,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f4d773-f232-406d-9d98-0466005ef302/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE