./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/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_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/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_da88f95f-7eca-4afa-aa61-fe9eca473f77/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 894b9126919d6af09c0902d1c20b8183acfd3589fe20590a119ca487cf6e7a3f --- 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 07:59:23,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:59:23,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:59:23,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:59:23,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:59:23,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:59:23,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:59:23,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:59:23,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:59:23,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:59:23,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:59:23,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:59:23,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:59:23,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:59:23,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:59:23,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:59:23,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:59:23,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:59:23,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:59:23,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:59:23,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:59:23,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:59:23,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:59:23,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:59:23,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:59:23,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:59:23,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:59:23,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:59:23,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:59:23,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:59:23,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:59:23,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:59:23,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:59:23,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:59:23,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:59:23,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:59:23,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:59:23,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:59:23,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:59:23,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:59:23,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:59:23,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:59:23,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:59:23,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:59:23,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:59:23,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:59:23,929 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:59:23,930 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:59:23,930 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:59:23,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:59:23,931 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:59:23,931 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:59:23,932 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:59:23,932 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:59:23,932 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:59:23,933 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:59:23,933 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:59:23,934 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:59:23,934 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:59:23,934 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:59:23,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:59:23,936 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:59:23,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:59:23,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:59:23,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:59:23,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:59:23,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:59:23,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:59:23,938 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:59:23,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:59:23,939 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:59:23,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:59:23,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:59:23,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:59:23,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:59:23,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:59:23,941 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:59:23,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:59:23,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:59:23,942 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:59:23,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:59:23,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:59:23,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:59:23,943 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_da88f95f-7eca-4afa-aa61-fe9eca473f77/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 894b9126919d6af09c0902d1c20b8183acfd3589fe20590a119ca487cf6e7a3f [2022-11-19 07:59:24,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:59:24,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:59:24,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:59:24,312 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:59:24,313 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:59:24,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2022-11-19 07:59:24,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/data/f756a660b/d15d394a763a41eb9f9e96b2d677935d/FLAG7296eae23 [2022-11-19 07:59:25,081 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:59:25,082 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2022-11-19 07:59:25,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/data/f756a660b/d15d394a763a41eb9f9e96b2d677935d/FLAG7296eae23 [2022-11-19 07:59:25,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/data/f756a660b/d15d394a763a41eb9f9e96b2d677935d [2022-11-19 07:59:25,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:59:25,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:59:25,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:59:25,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:59:25,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:59:25,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:25" (1/1) ... [2022-11-19 07:59:25,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13fa5737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25, skipping insertion in model container [2022-11-19 07:59:25,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:25" (1/1) ... [2022-11-19 07:59:25,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:59:25,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:59:25,765 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_da88f95f-7eca-4afa-aa61-fe9eca473f77/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c[1605,1618] [2022-11-19 07:59:25,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:59:25,983 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:59:26,013 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_da88f95f-7eca-4afa-aa61-fe9eca473f77/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c[1605,1618] [2022-11-19 07:59:26,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:59:26,135 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:59:26,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26 WrapperNode [2022-11-19 07:59:26,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:59:26,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:59:26,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:59:26,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:59:26,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (1/1) ... [2022-11-19 07:59:26,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (1/1) ... [2022-11-19 07:59:26,195 INFO L138 Inliner]: procedures = 58, calls = 105, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 236 [2022-11-19 07:59:26,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:59:26,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:59:26,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:59:26,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:59:26,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (1/1) ... [2022-11-19 07:59:26,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (1/1) ... [2022-11-19 07:59:26,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (1/1) ... [2022-11-19 07:59:26,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (1/1) ... [2022-11-19 07:59:26,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (1/1) ... [2022-11-19 07:59:26,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (1/1) ... [2022-11-19 07:59:26,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (1/1) ... [2022-11-19 07:59:26,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (1/1) ... [2022-11-19 07:59:26,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:59:26,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:59:26,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:59:26,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:59:26,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (1/1) ... [2022-11-19 07:59:26,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:59:26,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:26,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:59:26,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:59:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:59:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 07:59:26,352 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 07:59:26,353 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:59:26,353 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:59:26,353 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:59:26,353 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:59:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 07:59:26,354 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 07:59:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 07:59:26,355 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 07:59:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-19 07:59:26,356 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-19 07:59:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-19 07:59:26,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-19 07:59:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-19 07:59:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-19 07:59:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:59:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 07:59:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 07:59:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:59:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:59:26,509 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:59:26,519 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:59:27,008 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:59:27,158 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:59:27,158 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:59:27,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:27 BoogieIcfgContainer [2022-11-19 07:59:27,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:59:27,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:59:27,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:59:27,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:59:27,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:25" (1/3) ... [2022-11-19 07:59:27,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dd51d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:27, skipping insertion in model container [2022-11-19 07:59:27,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:26" (2/3) ... [2022-11-19 07:59:27,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dd51d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:27, skipping insertion in model container [2022-11-19 07:59:27,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:27" (3/3) ... [2022-11-19 07:59:27,186 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2022-11-19 07:59:27,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:59:27,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:59:27,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:59:27,302 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;@2d9c78fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:59:27,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:59:27,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 51 states have internal predecessors, (58), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-19 07:59:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:59:27,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:27,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:27,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash 712513712, now seen corresponding path program 1 times [2022-11-19 07:59:27,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:27,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895668035] [2022-11-19 07:59:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:27,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:27,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895668035] [2022-11-19 07:59:27,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895668035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:27,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:27,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:59:27,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791572349] [2022-11-19 07:59:27,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:27,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:59:27,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:27,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:59:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:59:27,666 INFO L87 Difference]: Start difference. First operand has 68 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 51 states have internal predecessors, (58), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:59:27,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:27,786 INFO L93 Difference]: Finished difference Result 134 states and 181 transitions. [2022-11-19 07:59:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:59:27,789 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 07:59:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:27,801 INFO L225 Difference]: With dead ends: 134 [2022-11-19 07:59:27,802 INFO L226 Difference]: Without dead ends: 63 [2022-11-19 07:59:27,806 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 07:59:27,810 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:27,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:27,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-19 07:59:27,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-19 07:59:27,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 47 states have internal predecessors, (50), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-19 07:59:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2022-11-19 07:59:27,878 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 12 [2022-11-19 07:59:27,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:27,879 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2022-11-19 07:59:27,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:59:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2022-11-19 07:59:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:59:27,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:27,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:27,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:59:27,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:27,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:27,887 INFO L85 PathProgramCache]: Analyzing trace with hash 987824052, now seen corresponding path program 1 times [2022-11-19 07:59:27,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:27,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569994717] [2022-11-19 07:59:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:27,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:28,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:28,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569994717] [2022-11-19 07:59:28,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569994717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:28,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:28,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:59:28,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759755345] [2022-11-19 07:59:28,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:28,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:28,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:28,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:28,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:59:28,058 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:59:28,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:28,142 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2022-11-19 07:59:28,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:28,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:59:28,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:28,147 INFO L225 Difference]: With dead ends: 103 [2022-11-19 07:59:28,147 INFO L226 Difference]: Without dead ends: 55 [2022-11-19 07:59:28,148 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 07:59:28,149 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:28,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:28,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-19 07:59:28,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-19 07:59:28,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 42 states have internal predecessors, (44), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 07:59:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-11-19 07:59:28,160 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 13 [2022-11-19 07:59:28,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:28,162 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-11-19 07:59:28,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:59:28,162 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-11-19 07:59:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:59:28,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:28,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:28,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:59:28,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:28,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:28,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1857867065, now seen corresponding path program 1 times [2022-11-19 07:59:28,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:28,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032631354] [2022-11-19 07:59:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:28,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:28,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032631354] [2022-11-19 07:59:28,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032631354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:28,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:28,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:59:28,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027623299] [2022-11-19 07:59:28,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:28,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:59:28,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:28,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:59:28,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:59:28,470 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:59:28,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:28,579 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2022-11-19 07:59:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:59:28,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 07:59:28,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:28,581 INFO L225 Difference]: With dead ends: 108 [2022-11-19 07:59:28,581 INFO L226 Difference]: Without dead ends: 55 [2022-11-19 07:59:28,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:59:28,583 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 65 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:28,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 71 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-19 07:59:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-19 07:59:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.303030303030303) internal successors, (43), 42 states have internal predecessors, (43), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 07:59:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2022-11-19 07:59:28,595 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 15 [2022-11-19 07:59:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:28,596 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2022-11-19 07:59:28,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:59:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2022-11-19 07:59:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:59:28,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:28,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:28,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:59:28,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:28,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash -561703335, now seen corresponding path program 1 times [2022-11-19 07:59:28,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:28,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817941697] [2022-11-19 07:59:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:28,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:28,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:28,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817941697] [2022-11-19 07:59:28,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817941697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:28,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:28,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:59:28,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852246745] [2022-11-19 07:59:28,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:28,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:28,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:28,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:28,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:59:28,664 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:59:28,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:28,731 INFO L93 Difference]: Finished difference Result 144 states and 185 transitions. [2022-11-19 07:59:28,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:28,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-19 07:59:28,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:28,733 INFO L225 Difference]: With dead ends: 144 [2022-11-19 07:59:28,733 INFO L226 Difference]: Without dead ends: 91 [2022-11-19 07:59:28,734 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 07:59:28,735 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 41 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:28,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 97 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:59:28,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-19 07:59:28,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2022-11-19 07:59:28,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 65 states have internal predecessors, (71), 16 states have call successors, (16), 15 states have call predecessors, (16), 15 states have return successors, (22), 14 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-19 07:59:28,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2022-11-19 07:59:28,754 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 25 [2022-11-19 07:59:28,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:28,754 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2022-11-19 07:59:28,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:59:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2022-11-19 07:59:28,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 07:59:28,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:28,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:28,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:59:28,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:28,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:28,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1584101162, now seen corresponding path program 1 times [2022-11-19 07:59:28,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:28,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159583078] [2022-11-19 07:59:28,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:28,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:28,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:28,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159583078] [2022-11-19 07:59:28,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159583078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:28,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:28,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:59:28,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913005874] [2022-11-19 07:59:28,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:28,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:59:28,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:28,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:59:28,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:59:28,989 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:59:29,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:29,155 INFO L93 Difference]: Finished difference Result 250 states and 310 transitions. [2022-11-19 07:59:29,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:59:29,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-19 07:59:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:29,160 INFO L225 Difference]: With dead ends: 250 [2022-11-19 07:59:29,161 INFO L226 Difference]: Without dead ends: 163 [2022-11-19 07:59:29,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:59:29,168 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 80 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:29,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 186 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-19 07:59:29,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 134. [2022-11-19 07:59:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 97 states have internal predecessors, (104), 22 states have call successors, (22), 21 states have call predecessors, (22), 24 states have return successors, (31), 22 states have call predecessors, (31), 22 states have call successors, (31) [2022-11-19 07:59:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2022-11-19 07:59:29,220 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 31 [2022-11-19 07:59:29,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:29,220 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2022-11-19 07:59:29,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:59:29,221 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2022-11-19 07:59:29,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:59:29,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:29,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:29,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:59:29,226 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:29,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash -657528160, now seen corresponding path program 1 times [2022-11-19 07:59:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:29,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292885984] [2022-11-19 07:59:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:29,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:29,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:29,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292885984] [2022-11-19 07:59:29,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292885984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:29,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:29,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:59:29,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889536021] [2022-11-19 07:59:29,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:29,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:59:29,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:59:29,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:59:29,614 INFO L87 Difference]: Start difference. First operand 134 states and 157 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), 3 states have call successors, (4) [2022-11-19 07:59:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:30,335 INFO L93 Difference]: Finished difference Result 330 states and 409 transitions. [2022-11-19 07:59:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:59:30,336 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), 3 states have call successors, (4) Word has length 34 [2022-11-19 07:59:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:30,338 INFO L225 Difference]: With dead ends: 330 [2022-11-19 07:59:30,338 INFO L226 Difference]: Without dead ends: 243 [2022-11-19 07:59:30,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:59:30,349 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 155 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:30,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 295 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:59:30,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-19 07:59:30,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 216. [2022-11-19 07:59:30,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 141 states have (on average 1.198581560283688) internal successors, (169), 158 states have internal predecessors, (169), 36 states have call successors, (36), 31 states have call predecessors, (36), 38 states have return successors, (51), 37 states have call predecessors, (51), 36 states have call successors, (51) [2022-11-19 07:59:30,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 256 transitions. [2022-11-19 07:59:30,414 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 256 transitions. Word has length 34 [2022-11-19 07:59:30,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:30,415 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 256 transitions. [2022-11-19 07:59:30,415 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), 3 states have call successors, (4) [2022-11-19 07:59:30,415 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 256 transitions. [2022-11-19 07:59:30,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 07:59:30,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:30,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:30,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:59:30,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash 522110395, now seen corresponding path program 1 times [2022-11-19 07:59:30,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:30,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616503572] [2022-11-19 07:59:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:30,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:59:30,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:30,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616503572] [2022-11-19 07:59:30,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616503572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:30,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:30,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:59:30,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178193573] [2022-11-19 07:59:30,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:30,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:59:30,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:30,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:59:30,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:59:30,592 INFO L87 Difference]: Start difference. First operand 216 states and 256 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:59:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:30,825 INFO L93 Difference]: Finished difference Result 569 states and 690 transitions. [2022-11-19 07:59:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:59:30,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 55 [2022-11-19 07:59:30,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:30,829 INFO L225 Difference]: With dead ends: 569 [2022-11-19 07:59:30,830 INFO L226 Difference]: Without dead ends: 475 [2022-11-19 07:59:30,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:59:30,831 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 69 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:30,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 306 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:30,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-19 07:59:30,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 435. [2022-11-19 07:59:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 294 states have (on average 1.2108843537414966) internal successors, (356), 320 states have internal predecessors, (356), 65 states have call successors, (65), 57 states have call predecessors, (65), 75 states have return successors, (99), 73 states have call predecessors, (99), 65 states have call successors, (99) [2022-11-19 07:59:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 520 transitions. [2022-11-19 07:59:30,895 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 520 transitions. Word has length 55 [2022-11-19 07:59:30,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:30,896 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 520 transitions. [2022-11-19 07:59:30,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:59:30,896 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 520 transitions. [2022-11-19 07:59:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-19 07:59:30,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:30,898 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:30,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:59:30,899 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:30,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash 493154562, now seen corresponding path program 1 times [2022-11-19 07:59:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:30,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917494255] [2022-11-19 07:59:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:30,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:59:31,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:31,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917494255] [2022-11-19 07:59:31,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917494255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:31,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:31,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:59:31,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391173878] [2022-11-19 07:59:31,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:31,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:59:31,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:31,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:59:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:59:31,300 INFO L87 Difference]: Start difference. First operand 435 states and 520 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-19 07:59:31,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:31,998 INFO L93 Difference]: Finished difference Result 793 states and 984 transitions. [2022-11-19 07:59:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 07:59:31,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 58 [2022-11-19 07:59:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:32,005 INFO L225 Difference]: With dead ends: 793 [2022-11-19 07:59:32,005 INFO L226 Difference]: Without dead ends: 578 [2022-11-19 07:59:32,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:59:32,007 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 133 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:32,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 211 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:59:32,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-19 07:59:32,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 523. [2022-11-19 07:59:32,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 356 states have (on average 1.2387640449438202) internal successors, (441), 388 states have internal predecessors, (441), 77 states have call successors, (77), 63 states have call predecessors, (77), 89 states have return successors, (133), 88 states have call predecessors, (133), 77 states have call successors, (133) [2022-11-19 07:59:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 651 transitions. [2022-11-19 07:59:32,137 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 651 transitions. Word has length 58 [2022-11-19 07:59:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:32,138 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 651 transitions. [2022-11-19 07:59:32,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-19 07:59:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 651 transitions. [2022-11-19 07:59:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 07:59:32,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:32,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:32,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:59:32,143 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:32,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:32,144 INFO L85 PathProgramCache]: Analyzing trace with hash 600507340, now seen corresponding path program 1 times [2022-11-19 07:59:32,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:32,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791202669] [2022-11-19 07:59:32,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:32,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:59:32,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:32,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791202669] [2022-11-19 07:59:32,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791202669] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:59:32,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817723132] [2022-11-19 07:59:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:32,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:32,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:32,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:32,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:59:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:33,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-19 07:59:33,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:59:33,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:59:34,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817723132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:59:34,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1380985527] [2022-11-19 07:59:34,399 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-19 07:59:34,399 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:59:34,404 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:59:34,411 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:59:34,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:59:41,075 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 139 for LOIs [2022-11-19 07:59:41,104 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 52 for LOIs [2022-11-19 07:59:41,545 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 49 for LOIs [2022-11-19 07:59:41,746 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 49 for LOIs [2022-11-19 07:59:42,061 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 40 for LOIs [2022-11-19 07:59:42,072 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 43 for LOIs [2022-11-19 07:59:42,083 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 26 for LOIs [2022-11-19 07:59:42,086 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:59:50,512 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6828#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (<= ~methaneLevelCritical~0 1) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (<= |old(~pumpRunning~0)| 1) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 1 ~systemActive~0) (<= |#NULL.offset| 0) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (<= 0 ~head~0.base) (<= 0 ~methaneLevelCritical~0) (<= 0 ~pumpRunning~0) (<= ~head~0.base 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 07:59:50,512 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:59:50,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:59:50,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 27 [2022-11-19 07:59:50,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267165266] [2022-11-19 07:59:50,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:59:50,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-19 07:59:50,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-19 07:59:50,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=3372, Unknown=0, NotChecked=0, Total=3782 [2022-11-19 07:59:50,517 INFO L87 Difference]: Start difference. First operand 523 states and 651 transitions. Second operand has 27 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-19 07:59:54,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:54,006 INFO L93 Difference]: Finished difference Result 1465 states and 1896 transitions. [2022-11-19 07:59:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-19 07:59:54,008 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) Word has length 61 [2022-11-19 07:59:54,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:54,020 INFO L225 Difference]: With dead ends: 1465 [2022-11-19 07:59:54,021 INFO L226 Difference]: Without dead ends: 1144 [2022-11-19 07:59:54,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 140 SyntacticMatches, 5 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4222 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=1201, Invalid=9101, Unknown=0, NotChecked=0, Total=10302 [2022-11-19 07:59:54,027 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 1217 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:54,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 376 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-19 07:59:54,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2022-11-19 07:59:54,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 971. [2022-11-19 07:59:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 668 states have (on average 1.2035928143712575) internal successors, (804), 720 states have internal predecessors, (804), 135 states have call successors, (135), 109 states have call predecessors, (135), 167 states have return successors, (253), 167 states have call predecessors, (253), 135 states have call successors, (253) [2022-11-19 07:59:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1192 transitions. [2022-11-19 07:59:54,194 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1192 transitions. Word has length 61 [2022-11-19 07:59:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:54,200 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1192 transitions. [2022-11-19 07:59:54,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-19 07:59:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1192 transitions. [2022-11-19 07:59:54,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-19 07:59:54,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:54,206 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:54,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:59:54,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-19 07:59:54,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:54,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:54,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2143371024, now seen corresponding path program 1 times [2022-11-19 07:59:54,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:54,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868463560] [2022-11-19 07:59:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:54,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 07:59:54,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:54,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868463560] [2022-11-19 07:59:54,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868463560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:54,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:54,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:59:54,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274557105] [2022-11-19 07:59:54,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:54,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:59:54,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:54,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:59:54,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:59:54,599 INFO L87 Difference]: Start difference. First operand 971 states and 1192 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 07:59:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:54,804 INFO L93 Difference]: Finished difference Result 1029 states and 1269 transitions. [2022-11-19 07:59:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:59:54,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 95 [2022-11-19 07:59:54,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:54,811 INFO L225 Difference]: With dead ends: 1029 [2022-11-19 07:59:54,811 INFO L226 Difference]: Without dead ends: 1027 [2022-11-19 07:59:54,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:59:54,813 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 49 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:54,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 158 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:54,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-11-19 07:59:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 971. [2022-11-19 07:59:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 668 states have (on average 1.1826347305389222) internal successors, (790), 720 states have internal predecessors, (790), 135 states have call successors, (135), 109 states have call predecessors, (135), 167 states have return successors, (253), 167 states have call predecessors, (253), 135 states have call successors, (253) [2022-11-19 07:59:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1178 transitions. [2022-11-19 07:59:54,995 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1178 transitions. Word has length 95 [2022-11-19 07:59:54,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:54,996 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1178 transitions. [2022-11-19 07:59:54,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 07:59:54,997 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1178 transitions. [2022-11-19 07:59:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-19 07:59:55,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:55,000 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:55,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:59:55,000 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1813634701, now seen corresponding path program 1 times [2022-11-19 07:59:55,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:55,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740161825] [2022-11-19 07:59:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:55,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:59:55,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:55,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740161825] [2022-11-19 07:59:55,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740161825] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:59:55,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514799393] [2022-11-19 07:59:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:55,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:55,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:55,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:55,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:59:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:55,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 07:59:55,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 07:59:55,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-19 07:59:55,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514799393] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:59:55,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1006305527] [2022-11-19 07:59:55,855 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-19 07:59:55,855 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:59:55,857 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:59:55,857 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:59:55,857 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:00:00,293 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 28 for LOIs [2022-11-19 08:00:00,297 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2022-11-19 08:00:00,512 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 20 for LOIs [2022-11-19 08:00:00,636 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 59 for LOIs [2022-11-19 08:00:01,112 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 50 for LOIs [2022-11-19 08:00:01,123 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2022-11-19 08:00:01,125 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:00:08,082 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14539#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 08:00:08,082 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:00:08,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:00:08,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 11 [2022-11-19 08:00:08,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108577975] [2022-11-19 08:00:08,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:00:08,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 08:00:08,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 08:00:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1636, Unknown=0, NotChecked=0, Total=1892 [2022-11-19 08:00:08,085 INFO L87 Difference]: Start difference. First operand 971 states and 1178 transitions. Second operand has 11 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-19 08:00:09,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:09,175 INFO L93 Difference]: Finished difference Result 2124 states and 2649 transitions. [2022-11-19 08:00:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-19 08:00:09,176 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 104 [2022-11-19 08:00:09,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:09,183 INFO L225 Difference]: With dead ends: 2124 [2022-11-19 08:00:09,183 INFO L226 Difference]: Without dead ends: 1367 [2022-11-19 08:00:09,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 283 SyntacticMatches, 14 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2005 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=461, Invalid=3699, Unknown=0, NotChecked=0, Total=4160 [2022-11-19 08:00:09,187 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 348 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:09,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 496 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 08:00:09,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2022-11-19 08:00:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1118. [2022-11-19 08:00:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 753 states have (on average 1.155378486055777) internal successors, (870), 807 states have internal predecessors, (870), 169 states have call successors, (169), 148 states have call predecessors, (169), 195 states have return successors, (253), 192 states have call predecessors, (253), 169 states have call successors, (253) [2022-11-19 08:00:09,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1292 transitions. [2022-11-19 08:00:09,324 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1292 transitions. Word has length 104 [2022-11-19 08:00:09,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:09,324 INFO L495 AbstractCegarLoop]: Abstraction has 1118 states and 1292 transitions. [2022-11-19 08:00:09,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-19 08:00:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1292 transitions. [2022-11-19 08:00:09,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 08:00:09,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:09,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:00:09,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:00:09,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 08:00:09,539 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:09,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:09,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2048533630, now seen corresponding path program 2 times [2022-11-19 08:00:09,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:00:09,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226531268] [2022-11-19 08:00:09,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:09,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:00:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-19 08:00:10,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:10,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226531268] [2022-11-19 08:00:10,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226531268] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:00:10,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331667515] [2022-11-19 08:00:10,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:00:10,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:00:10,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:00:10,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:00:10,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:00:10,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:00:10,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:00:10,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 08:00:10,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:00:10,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:00:10,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331667515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:10,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:00:10,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 17 [2022-11-19 08:00:10,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155342972] [2022-11-19 08:00:10,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:10,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:00:10,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:00:10,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:00:10,468 INFO L87 Difference]: Start difference. First operand 1118 states and 1292 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-19 08:00:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:10,792 INFO L93 Difference]: Finished difference Result 2277 states and 2700 transitions. [2022-11-19 08:00:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:00:10,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 103 [2022-11-19 08:00:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:10,800 INFO L225 Difference]: With dead ends: 2277 [2022-11-19 08:00:10,800 INFO L226 Difference]: Without dead ends: 1349 [2022-11-19 08:00:10,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-19 08:00:10,804 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 56 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:10,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 309 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:00:10,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-11-19 08:00:10,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1180. [2022-11-19 08:00:10,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 800 states have (on average 1.15) internal successors, (920), 856 states have internal predecessors, (920), 181 states have call successors, (181), 157 states have call predecessors, (181), 198 states have return successors, (266), 194 states have call predecessors, (266), 181 states have call successors, (266) [2022-11-19 08:00:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1367 transitions. [2022-11-19 08:00:10,972 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1367 transitions. Word has length 103 [2022-11-19 08:00:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:10,973 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1367 transitions. [2022-11-19 08:00:10,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-19 08:00:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1367 transitions. [2022-11-19 08:00:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-19 08:00:10,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:10,976 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:00:10,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:00:11,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:00:11,182 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:11,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1808422920, now seen corresponding path program 2 times [2022-11-19 08:00:11,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:00:11,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922021133] [2022-11-19 08:00:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:11,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:00:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 23 proven. 90 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:00:12,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:12,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922021133] [2022-11-19 08:00:12,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922021133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:00:12,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824368741] [2022-11-19 08:00:12,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:00:12,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:00:12,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:00:12,971 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:00:12,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:00:13,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 08:00:13,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:00:13,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 08:00:13,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-19 08:00:13,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:00:13,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824368741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:13,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:00:13,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [28] total 32 [2022-11-19 08:00:13,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014562899] [2022-11-19 08:00:13,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:13,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:00:13,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:00:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2022-11-19 08:00:13,208 INFO L87 Difference]: Start difference. First operand 1180 states and 1367 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:00:13,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:13,521 INFO L93 Difference]: Finished difference Result 1942 states and 2261 transitions. [2022-11-19 08:00:13,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:00:13,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2022-11-19 08:00:13,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:13,527 INFO L225 Difference]: With dead ends: 1942 [2022-11-19 08:00:13,527 INFO L226 Difference]: Without dead ends: 1078 [2022-11-19 08:00:13,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 08:00:13,531 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 29 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:13,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 290 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:00:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-11-19 08:00:13,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1075. [2022-11-19 08:00:13,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 727 states have (on average 1.1375515818431912) internal successors, (827), 777 states have internal predecessors, (827), 166 states have call successors, (166), 149 states have call predecessors, (166), 181 states have return successors, (231), 176 states have call predecessors, (231), 166 states have call successors, (231) [2022-11-19 08:00:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1224 transitions. [2022-11-19 08:00:13,673 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1224 transitions. Word has length 121 [2022-11-19 08:00:13,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:13,673 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1224 transitions. [2022-11-19 08:00:13,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:00:13,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1224 transitions. [2022-11-19 08:00:13,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-19 08:00:13,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:13,680 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:00:13,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:00:13,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 08:00:13,886 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:13,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:13,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1751601496, now seen corresponding path program 1 times [2022-11-19 08:00:13,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:00:13,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368015002] [2022-11-19 08:00:13,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:13,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:00:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-19 08:00:14,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:14,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368015002] [2022-11-19 08:00:14,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368015002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:00:14,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944121606] [2022-11-19 08:00:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:14,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:00:14,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:00:14,171 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:00:14,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:00:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:14,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-19 08:00:14,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 31 proven. 24 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-19 08:00:14,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:00:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-19 08:00:14,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944121606] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:00:14,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [559246688] [2022-11-19 08:00:14,882 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-11-19 08:00:14,882 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:00:14,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:00:14,883 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:00:14,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:00:17,838 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 39 for LOIs [2022-11-19 08:00:17,845 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2022-11-19 08:00:17,980 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 48 for LOIs [2022-11-19 08:00:18,599 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 37 for LOIs [2022-11-19 08:00:18,756 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 48 for LOIs [2022-11-19 08:00:18,766 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 38 for LOIs [2022-11-19 08:00:18,773 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2022-11-19 08:00:18,775 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 31 for LOIs [2022-11-19 08:00:18,777 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:00:24,754 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31315#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 1 ~systemActive~0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (<= |#NULL.offset| 0) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (<= 0 ~head~0.base) (<= 0 ~methaneLevelCritical~0) (<= ~head~0.base 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 08:00:24,754 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:00:24,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:00:24,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 19 [2022-11-19 08:00:24,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504111962] [2022-11-19 08:00:24,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:00:24,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-19 08:00:24,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-19 08:00:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2848, Unknown=0, NotChecked=0, Total=3080 [2022-11-19 08:00:24,758 INFO L87 Difference]: Start difference. First operand 1075 states and 1224 transitions. Second operand has 19 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 5 states have call successors, (28), 7 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-19 08:00:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:25,789 INFO L93 Difference]: Finished difference Result 2144 states and 2496 transitions. [2022-11-19 08:00:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 08:00:25,790 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 5 states have call successors, (28), 7 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) Word has length 131 [2022-11-19 08:00:25,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:25,798 INFO L225 Difference]: With dead ends: 2144 [2022-11-19 08:00:25,798 INFO L226 Difference]: Without dead ends: 1622 [2022-11-19 08:00:25,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 337 SyntacticMatches, 14 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=315, Invalid=3845, Unknown=0, NotChecked=0, Total=4160 [2022-11-19 08:00:25,804 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 263 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:25,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 138 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 08:00:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2022-11-19 08:00:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1316. [2022-11-19 08:00:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 888 states have (on average 1.1261261261261262) internal successors, (1000), 954 states have internal predecessors, (1000), 201 states have call successors, (201), 180 states have call predecessors, (201), 226 states have return successors, (271), 220 states have call predecessors, (271), 201 states have call successors, (271) [2022-11-19 08:00:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1472 transitions. [2022-11-19 08:00:26,008 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1472 transitions. Word has length 131 [2022-11-19 08:00:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:26,009 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 1472 transitions. [2022-11-19 08:00:26,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 5 states have call successors, (28), 7 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-19 08:00:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1472 transitions. [2022-11-19 08:00:26,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-19 08:00:26,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:26,014 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:00:26,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:00:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 08:00:26,221 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:26,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1252079161, now seen corresponding path program 2 times [2022-11-19 08:00:26,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:00:26,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392305452] [2022-11-19 08:00:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:26,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:00:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 50 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 08:00:26,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:26,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392305452] [2022-11-19 08:00:26,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392305452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:00:26,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294762854] [2022-11-19 08:00:26,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:00:26,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:00:26,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:00:26,701 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:00:26,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:00:26,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:00:26,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:00:26,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-19 08:00:26,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 79 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 08:00:27,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:00:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:00:28,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294762854] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:00:28,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2068317039] [2022-11-19 08:00:28,343 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-11-19 08:00:28,343 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:00:28,343 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:00:28,344 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:00:28,344 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:00:31,311 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 39 for LOIs [2022-11-19 08:00:31,321 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2022-11-19 08:00:31,609 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 38 for LOIs [2022-11-19 08:00:31,756 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 37 for LOIs [2022-11-19 08:00:31,930 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 48 for LOIs [2022-11-19 08:00:31,940 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 38 for LOIs [2022-11-19 08:00:31,947 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2022-11-19 08:00:31,948 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 48 for LOIs [2022-11-19 08:00:31,955 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:00:39,366 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37574#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 08:00:39,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:00:39,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:00:39,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 14] total 34 [2022-11-19 08:00:39,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228015556] [2022-11-19 08:00:39,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:00:39,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-19 08:00:39,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:39,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-19 08:00:39,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=4489, Unknown=0, NotChecked=0, Total=4970 [2022-11-19 08:00:39,370 INFO L87 Difference]: Start difference. First operand 1316 states and 1472 transitions. Second operand has 34 states, 26 states have (on average 5.884615384615385) internal successors, (153), 26 states have internal predecessors, (153), 12 states have call successors, (38), 10 states have call predecessors, (38), 15 states have return successors, (41), 18 states have call predecessors, (41), 12 states have call successors, (41) [2022-11-19 08:00:42,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:42,759 INFO L93 Difference]: Finished difference Result 2896 states and 3518 transitions. [2022-11-19 08:00:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-19 08:00:42,762 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 26 states have (on average 5.884615384615385) internal successors, (153), 26 states have internal predecessors, (153), 12 states have call successors, (38), 10 states have call predecessors, (38), 15 states have return successors, (41), 18 states have call predecessors, (41), 12 states have call successors, (41) Word has length 128 [2022-11-19 08:00:42,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:42,778 INFO L225 Difference]: With dead ends: 2896 [2022-11-19 08:00:42,778 INFO L226 Difference]: Without dead ends: 2194 [2022-11-19 08:00:42,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 320 SyntacticMatches, 20 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4627 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1045, Invalid=9461, Unknown=0, NotChecked=0, Total=10506 [2022-11-19 08:00:42,789 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 906 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 3044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:42,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 546 Invalid, 3044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 08:00:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2022-11-19 08:00:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 1870. [2022-11-19 08:00:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1264 states have (on average 1.1234177215189873) internal successors, (1420), 1352 states have internal predecessors, (1420), 289 states have call successors, (289), 254 states have call predecessors, (289), 316 states have return successors, (409), 308 states have call predecessors, (409), 289 states have call successors, (409) [2022-11-19 08:00:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2118 transitions. [2022-11-19 08:00:43,154 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2118 transitions. Word has length 128 [2022-11-19 08:00:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:43,155 INFO L495 AbstractCegarLoop]: Abstraction has 1870 states and 2118 transitions. [2022-11-19 08:00:43,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 26 states have (on average 5.884615384615385) internal successors, (153), 26 states have internal predecessors, (153), 12 states have call successors, (38), 10 states have call predecessors, (38), 15 states have return successors, (41), 18 states have call predecessors, (41), 12 states have call successors, (41) [2022-11-19 08:00:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2118 transitions. [2022-11-19 08:00:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-19 08:00:43,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:43,161 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:00:43,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:00:43,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 08:00:43,378 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:43,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:43,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1051209159, now seen corresponding path program 3 times [2022-11-19 08:00:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:00:43,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430877551] [2022-11-19 08:00:43,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:43,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:00:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:44,421 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 50 proven. 49 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 08:00:44,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:44,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430877551] [2022-11-19 08:00:44,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430877551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:00:44,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475882430] [2022-11-19 08:00:44,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:00:44,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:00:44,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:00:44,427 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:00:44,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:00:44,561 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:00:44,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:00:44,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-19 08:00:44,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 75 proven. 39 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-19 08:00:45,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:00:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 69 proven. 23 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-19 08:00:46,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475882430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:00:46,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1736748413] [2022-11-19 08:00:46,059 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-11-19 08:00:46,059 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:00:46,061 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:00:46,063 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:00:46,063 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:00:48,031 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 23 for LOIs [2022-11-19 08:00:48,034 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2022-11-19 08:00:48,180 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 48 for LOIs [2022-11-19 08:00:48,536 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 37 for LOIs [2022-11-19 08:00:48,677 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 48 for LOIs [2022-11-19 08:00:48,687 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 22 for LOIs [2022-11-19 08:00:48,693 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2022-11-19 08:00:48,694 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 25 for LOIs [2022-11-19 08:00:48,696 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:00:54,153 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '45942#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 08:00:54,154 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:00:54,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:00:54,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 14] total 39 [2022-11-19 08:00:54,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489958386] [2022-11-19 08:00:54,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:00:54,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-19 08:00:54,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:54,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-19 08:00:54,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=5146, Unknown=0, NotChecked=0, Total=5700 [2022-11-19 08:00:54,158 INFO L87 Difference]: Start difference. First operand 1870 states and 2118 transitions. Second operand has 39 states, 36 states have (on average 4.638888888888889) internal successors, (167), 37 states have internal predecessors, (167), 19 states have call successors, (40), 11 states have call predecessors, (40), 17 states have return successors, (43), 19 states have call predecessors, (43), 19 states have call successors, (43) [2022-11-19 08:00:55,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:55,496 INFO L93 Difference]: Finished difference Result 2575 states and 2960 transitions. [2022-11-19 08:00:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 08:00:55,498 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 4.638888888888889) internal successors, (167), 37 states have internal predecessors, (167), 19 states have call successors, (40), 11 states have call predecessors, (40), 17 states have return successors, (43), 19 states have call predecessors, (43), 19 states have call successors, (43) Word has length 128 [2022-11-19 08:00:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:55,499 INFO L225 Difference]: With dead ends: 2575 [2022-11-19 08:00:55,499 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 08:00:55,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 315 SyntacticMatches, 22 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5153 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=900, Invalid=7110, Unknown=0, NotChecked=0, Total=8010 [2022-11-19 08:00:55,507 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 658 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:55,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 235 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 08:00:55,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 08:00:55,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 08:00:55,509 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 08:00:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 08:00:55,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 128 [2022-11-19 08:00:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:55,510 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 08:00:55,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 4.638888888888889) internal successors, (167), 37 states have internal predecessors, (167), 19 states have call successors, (40), 11 states have call predecessors, (40), 17 states have return successors, (43), 19 states have call predecessors, (43), 19 states have call successors, (43) [2022-11-19 08:00:55,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 08:00:55,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 08:00:55,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:00:55,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:00:55,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-19 08:00:55,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 08:01:08,392 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 278 285) the Hoare annotation is: (let ((.cse0 (not (= ~waterLevel~0 1))) (.cse1 (= |old(~pumpRunning~0)| 0)) (.cse2 (not (= |old(~pumpRunning~0)| 1))) (.cse3 (= 0 ~systemActive~0)) (.cse4 (= ~pumpRunning~0 1))) (and (or .cse0 .cse1 .cse2 (not (= ~methaneLevelCritical~0 1)) .cse3 .cse4) (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2 .cse3 .cse4))) [2022-11-19 08:01:08,393 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 278 285) no Hoare annotation was computed. [2022-11-19 08:01:08,393 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 168 174) no Hoare annotation was computed. [2022-11-19 08:01:08,393 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 168 174) the Hoare annotation is: true [2022-11-19 08:01:08,393 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 942 953) the Hoare annotation is: (let ((.cse1 (= ~methaneLevelCritical~0 1)) (.cse2 (not (= |old(~methaneLevelCritical~0)| 1))) (.cse4 (not (= ~waterLevel~0 1))) (.cse5 (not (= |old(~methaneLevelCritical~0)| 0))) (.cse0 (not (= ~pumpRunning~0 0))) (.cse7 (not (= 2 ~waterLevel~0))) (.cse6 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0)) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not (<= ~waterLevel~0 2)) .cse2 (< ~waterLevel~0 2) .cse3) (or .cse4 .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse0 .cse6 .cse3) (or .cse5 (= ~methaneLevelCritical~0 0) .cse7 (not (= ~pumpRunning~0 1)) .cse3) (or .cse5 .cse0 .cse7 .cse6 .cse3))) [2022-11-19 08:01:08,394 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 942 953) no Hoare annotation was computed. [2022-11-19 08:01:08,394 INFO L902 garLoopResultBuilder]: At program point L480(lines 455 484) the Hoare annotation is: true [2022-11-19 08:01:08,394 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 455 484) no Hoare annotation was computed. [2022-11-19 08:01:08,394 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 455 484) the Hoare annotation is: true [2022-11-19 08:01:08,394 INFO L899 garLoopResultBuilder]: For program point L476(line 476) no Hoare annotation was computed. [2022-11-19 08:01:08,394 INFO L899 garLoopResultBuilder]: For program point L469(lines 469 473) no Hoare annotation was computed. [2022-11-19 08:01:08,395 INFO L902 garLoopResultBuilder]: At program point L469-1(lines 469 473) the Hoare annotation is: true [2022-11-19 08:01:08,395 INFO L902 garLoopResultBuilder]: At program point L465-2(lines 465 479) the Hoare annotation is: true [2022-11-19 08:01:08,395 INFO L902 garLoopResultBuilder]: At program point L461(line 461) the Hoare annotation is: true [2022-11-19 08:01:08,395 INFO L899 garLoopResultBuilder]: For program point L461-1(line 461) no Hoare annotation was computed. [2022-11-19 08:01:08,396 INFO L895 garLoopResultBuilder]: At program point L155-1(lines 155 161) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 0)) (.cse5 (= ~waterLevel~0 1)) (.cse2 (= 0 ~systemActive~0))) (let ((.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse8 (not (= ~methaneLevelCritical~0 1))) (.cse6 (not .cse2)) (.cse7 (not (= |old(~pumpRunning~0)| 1))) (.cse9 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse10 (not (= |old(~waterLevel~0)| 1))) (.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse11 (and .cse4 .cse5))) (and (or .cse0 .cse1 .cse2 (not (<= |old(~waterLevel~0)| 2)) (and .cse3 (= ~pumpRunning~0 1)) (not (<= 2 |old(~waterLevel~0)|))) (or (and .cse0 .cse4 (= |timeShift_processEnvironment_~tmp~3#1| 1) .cse5 .cse6) .cse7 .cse8 .cse9 .cse2) (or .cse0 .cse10 .cse11 .cse8 .cse2) (or .cse0 (and .cse4 .cse3) .cse8 .cse9 .cse2) (or (and .cse0 .cse4 .cse5 .cse6) .cse1 .cse7 .cse9 .cse2) (or .cse0 .cse10 .cse1 .cse11 .cse2)))) [2022-11-19 08:01:08,396 INFO L895 garLoopResultBuilder]: At program point L242(line 242) the Hoare annotation is: (let ((.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse1 (not (= ~methaneLevelCritical~0 1))) (.cse4 (not (<= 2 |old(~waterLevel~0)|))) (.cse7 (not (= |old(~pumpRunning~0)| 1))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (not (= |old(~waterLevel~0)| 1))) (.cse6 (not (= ~methaneLevelCritical~0 0))) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse5 .cse1 .cse2) (or .cse2 .cse3 (and (or .cse0 .cse6) (or .cse7 .cse1)) .cse4) (or (and (= ~waterLevel~0 1) (= |timeShift_processEnvironment_~tmp~3#1| 0) (= ~pumpRunning~0 1)) .cse6 .cse7 (not (= |old(~waterLevel~0)| 2)) .cse2) (or .cse0 .cse5 .cse6 .cse2))) [2022-11-19 08:01:08,396 INFO L895 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: (let ((.cse6 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (not (= ~methaneLevelCritical~0 1))) (.cse7 (not (= |old(~waterLevel~0)| 2))) (.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse8 (not (= |old(~waterLevel~0)| 1))) (.cse5 (not (= ~methaneLevelCritical~0 0))) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse6 .cse7 .cse2) (or .cse0 .cse8 .cse1 .cse2) (or .cse6 .cse1 .cse7 .cse2 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |timeShift_processEnvironment_~tmp~3#1| 1) (= ~waterLevel~0 1))) (or .cse0 .cse5 .cse2 .cse3 .cse4) (or .cse0 .cse8 .cse5 .cse2))) [2022-11-19 08:01:08,397 INFO L895 garLoopResultBuilder]: At program point L234(line 234) the Hoare annotation is: (let ((.cse1 (not (= ~methaneLevelCritical~0 1))) (.cse6 (= ~waterLevel~0 1)) (.cse7 (not (= |old(~pumpRunning~0)| 1))) (.cse8 (not (= |old(~waterLevel~0)| 2))) (.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (not (= |old(~waterLevel~0)| 1))) (.cse9 (not (= ~methaneLevelCritical~0 0))) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse5 .cse1 .cse2) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse6) .cse7 .cse1 .cse8 .cse2) (or (and .cse6 (= ~pumpRunning~0 1)) .cse9 .cse7 .cse8 .cse2) (or .cse0 .cse9 .cse2 .cse3 .cse4) (or .cse0 .cse5 .cse9 .cse2))) [2022-11-19 08:01:08,397 INFO L899 garLoopResultBuilder]: For program point L234-1(line 234) no Hoare annotation was computed. [2022-11-19 08:01:08,397 INFO L895 garLoopResultBuilder]: At program point L247(line 247) the Hoare annotation is: (let ((.cse7 (= 0 ~systemActive~0))) (let ((.cse2 (= ~pumpRunning~0 0)) (.cse3 (= |old(~pumpRunning~0)| 0)) (.cse5 (not .cse7))) (let ((.cse8 (and .cse2 .cse3 (= |old(~waterLevel~0)| ~waterLevel~0) .cse5)) (.cse9 (not (= |old(~waterLevel~0)| 2))) (.cse11 (not (= |old(~pumpRunning~0)| 1))) (.cse6 (not (= ~methaneLevelCritical~0 1))) (.cse0 (not .cse3)) (.cse1 (not (= |old(~waterLevel~0)| 1))) (.cse10 (not (= ~methaneLevelCritical~0 0))) (.cse4 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4 .cse5) .cse6 .cse7) (or .cse0 .cse8 .cse6 .cse9 .cse7) (or .cse0 .cse10 .cse8 .cse9 .cse7) (or .cse10 .cse11 .cse9 .cse7) (or .cse11 .cse6 .cse7 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 .cse1 .cse10 (and .cse2 .cse4) .cse7))))) [2022-11-19 08:01:08,402 INFO L895 garLoopResultBuilder]: At program point L247-1(lines 228 252) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 0)) (.cse5 (= ~waterLevel~0 1)) (.cse2 (= 0 ~systemActive~0))) (let ((.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse8 (not (= ~methaneLevelCritical~0 1))) (.cse6 (not .cse2)) (.cse7 (not (= |old(~pumpRunning~0)| 1))) (.cse9 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse10 (not (= |old(~waterLevel~0)| 1))) (.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse11 (and .cse4 .cse5))) (and (or .cse0 .cse1 .cse2 (not (<= |old(~waterLevel~0)| 2)) (and .cse3 (= ~pumpRunning~0 1)) (not (<= 2 |old(~waterLevel~0)|))) (or (and .cse0 .cse4 (= |timeShift_processEnvironment_~tmp~3#1| 1) .cse5 .cse6) .cse7 .cse8 .cse9 .cse2) (or .cse0 .cse10 .cse11 .cse8 .cse2) (or .cse0 (and .cse4 .cse3) .cse8 .cse9 .cse2) (or (and .cse0 .cse4 .cse5 .cse6) .cse1 .cse7 .cse9 .cse2) (or .cse0 .cse10 .cse1 .cse11 .cse2)))) [2022-11-19 08:01:08,403 INFO L899 garLoopResultBuilder]: For program point L148-1(lines 147 166) no Hoare annotation was computed. [2022-11-19 08:01:08,404 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse6 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (not (= ~methaneLevelCritical~0 1))) (.cse4 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse7 (not (= |old(~waterLevel~0)| 1))) (.cse5 (not (= ~methaneLevelCritical~0 0))) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse6 (not (= |old(~waterLevel~0)| 2)) .cse2) (or .cse0 .cse7 .cse1 .cse2) (or .cse2 .cse3 (and (or .cse0 .cse5) (or .cse6 .cse1)) .cse4) (or .cse0 .cse7 .cse5 .cse2))) [2022-11-19 08:01:08,404 INFO L899 garLoopResultBuilder]: For program point L236(lines 236 244) no Hoare annotation was computed. [2022-11-19 08:01:08,404 INFO L899 garLoopResultBuilder]: For program point L232(lines 232 249) no Hoare annotation was computed. [2022-11-19 08:01:08,404 INFO L899 garLoopResultBuilder]: For program point L402(lines 402 408) no Hoare annotation was computed. [2022-11-19 08:01:08,404 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 144 167) the Hoare annotation is: (let ((.cse11 (= ~pumpRunning~0 0)) (.cse12 (= ~methaneLevelCritical~0 0)) (.cse10 (= ~methaneLevelCritical~0 1))) (let ((.cse6 (not (= |old(~waterLevel~0)| 2))) (.cse9 (= ~pumpRunning~0 1)) (.cse5 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse8 (not (= |old(~pumpRunning~0)| 1))) (.cse3 (not .cse10)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= |old(~waterLevel~0)| 1))) (.cse7 (not .cse12)) (.cse2 (and .cse11 (= ~waterLevel~0 1))) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse5) .cse3 .cse6 .cse4) (or .cse7 .cse8 .cse6 .cse4 (and .cse5 .cse9)) (or (and (or (and .cse10 .cse9) (and .cse11 .cse12)) .cse5) .cse4 (not (<= |old(~waterLevel~0)| 2)) (and (or .cse0 .cse7) (or .cse8 .cse3)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 .cse1 .cse7 .cse2 .cse4)))) [2022-11-19 08:01:08,405 INFO L895 garLoopResultBuilder]: At program point L398(lines 398 411) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse3 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 1)) (.cse4 (= ~waterLevel~0 1)) (.cse5 (= 0 ~systemActive~0)) (.cse14 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (not (= |old(~pumpRunning~0)| 1))) (.cse8 (not (= ~methaneLevelCritical~0 1))) (.cse12 (not (<= |old(~waterLevel~0)| 2))) (.cse10 (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1|)) (.cse11 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse13 (not (<= 2 |old(~waterLevel~0)|))) (.cse6 (not .cse14)) (.cse7 (not (= |old(~waterLevel~0)| 1))) (.cse0 (not (= ~methaneLevelCritical~0 0))) (.cse9 (and .cse2 .cse3 .cse14 .cse4 (not .cse5)))) (and (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 2)) (and .cse2 .cse3 .cse4) .cse5) (or .cse6 .cse7 .cse8 .cse9 .cse5) (or .cse6 (and .cse2 .cse10 .cse11) .cse8 .cse5 .cse12 .cse13) (or (and .cse2 (= |timeShift_processEnvironment_~tmp~3#1| 1) .cse3 .cse4) .cse1 .cse8 .cse5 .cse12 .cse13) (or .cse6 .cse0 .cse5 .cse12 (and .cse10 .cse11 (= ~pumpRunning~0 1)) .cse13) (or .cse6 .cse7 .cse0 .cse9 .cse5)))) [2022-11-19 08:01:08,405 INFO L895 garLoopResultBuilder]: At program point L398-1(lines 390 414) the Hoare annotation is: (let ((.cse6 (= ~pumpRunning~0 0)) (.cse12 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 1)) (.cse13 (= ~waterLevel~0 1)) (.cse4 (= 0 ~systemActive~0))) (let ((.cse1 (not (= |old(~pumpRunning~0)| 1))) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse9 (not (= ~methaneLevelCritical~0 1))) (.cse14 (not .cse4)) (.cse10 (not (<= |old(~waterLevel~0)| 2))) (.cse7 (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1|)) (.cse8 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse11 (not (<= 2 |old(~waterLevel~0)|))) (.cse5 (not (= |old(~pumpRunning~0)| 0))) (.cse15 (not (= |old(~waterLevel~0)| 1))) (.cse0 (not (= ~methaneLevelCritical~0 0))) (.cse3 (and .cse6 .cse12 .cse13))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 (and .cse6 .cse7 .cse8) .cse9 .cse4 .cse10 .cse11) (or (and .cse6 (= |timeShift_processEnvironment_~tmp~3#1| 1) .cse12 .cse13 .cse14) .cse1 .cse9 .cse2 .cse4) (or .cse5 .cse15 .cse9 .cse4 (and .cse6 .cse12 .cse13 .cse14)) (or .cse5 .cse0 .cse4 .cse10 (and .cse7 .cse8 (= ~pumpRunning~0 1)) .cse11) (or .cse5 .cse15 .cse0 .cse3 .cse4)))) [2022-11-19 08:01:08,406 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 144 167) no Hoare annotation was computed. [2022-11-19 08:01:08,406 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-19 08:01:08,406 INFO L895 garLoopResultBuilder]: At program point L122(lines 73 123) the Hoare annotation is: false [2022-11-19 08:01:08,406 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 100) no Hoare annotation was computed. [2022-11-19 08:01:08,406 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-19 08:01:08,407 INFO L895 garLoopResultBuilder]: At program point L94-1(lines 94 100) the Hoare annotation is: (let ((.cse4 (= ~waterLevel~0 1)) (.cse2 (= ~methaneLevelCritical~0 1)) (.cse8 (= ~pumpRunning~0 1)) (.cse0 (= ~pumpRunning~0 0)) (.cse7 (= ~methaneLevelCritical~0 0)) (.cse6 (= 2 ~waterLevel~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5) (and .cse6 .cse7 .cse1 .cse3 .cse5 .cse8) (and .cse0 .cse7 .cse1 .cse3 .cse4 .cse5) (and (or (and .cse2 .cse8) (and .cse0 .cse7)) .cse6 .cse1 .cse3 .cse5))) [2022-11-19 08:01:08,407 INFO L895 garLoopResultBuilder]: At program point L536(lines 536 543) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~8#1| 1) (= ~waterLevel~0 1) (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0)) [2022-11-19 08:01:08,407 INFO L895 garLoopResultBuilder]: At program point L119(lines 74 121) the Hoare annotation is: (let ((.cse2 (= ~methaneLevelCritical~0 1)) (.cse6 (= 2 ~waterLevel~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse7 (= ~methaneLevelCritical~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (= ~waterLevel~0 1)) (.cse5 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5) (and .cse6 .cse7 .cse1 .cse3 .cse5 (= ~pumpRunning~0 1)) (and .cse0 .cse7 .cse1 .cse3 .cse4 .cse5))) [2022-11-19 08:01:08,407 INFO L895 garLoopResultBuilder]: At program point L86(line 86) the Hoare annotation is: (let ((.cse0 (= 2 ~waterLevel~0)) (.cse5 (= ~pumpRunning~0 0)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse6 (= ~waterLevel~0 1)) (.cse4 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ~pumpRunning~0 1)) (and (or (and .cse5 .cse3 .cse6 .cse4) (and .cse5 .cse0 .cse3 .cse4)) .cse2 (= ~methaneLevelCritical~0 1)) (and .cse5 .cse1 .cse2 .cse3 .cse6 .cse4))) [2022-11-19 08:01:08,407 INFO L902 garLoopResultBuilder]: At program point L536-2(lines 536 543) the Hoare annotation is: true [2022-11-19 08:01:08,408 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 08:01:08,408 INFO L895 garLoopResultBuilder]: At program point L112-2(lines 104 117) the Hoare annotation is: (let ((.cse4 (= ~waterLevel~0 1)) (.cse2 (= ~methaneLevelCritical~0 1)) (.cse8 (= ~pumpRunning~0 1)) (.cse0 (= ~pumpRunning~0 0)) (.cse7 (= ~methaneLevelCritical~0 0)) (.cse6 (= 2 ~waterLevel~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5) (and .cse6 .cse7 .cse1 .cse3 .cse5 .cse8) (and .cse0 .cse7 .cse1 .cse3 .cse4 .cse5) (and (or (and .cse2 .cse8) (and .cse0 .cse7)) .cse6 .cse1 .cse3 .cse5))) [2022-11-19 08:01:08,408 INFO L899 garLoopResultBuilder]: For program point L75(lines 74 121) no Hoare annotation was computed. [2022-11-19 08:01:08,408 INFO L895 garLoopResultBuilder]: At program point L96(line 96) the Hoare annotation is: (let ((.cse2 (= ~methaneLevelCritical~0 1)) (.cse6 (= 2 ~waterLevel~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse7 (= ~methaneLevelCritical~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (= ~waterLevel~0 1)) (.cse5 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5) (and .cse6 .cse7 .cse1 .cse3 .cse5 (= ~pumpRunning~0 1)) (and .cse0 .cse7 (<= 2 ~waterLevel~0) .cse1 .cse3 (<= ~waterLevel~0 2) .cse5) (and .cse0 .cse7 .cse1 .cse3 .cse4 .cse5))) [2022-11-19 08:01:08,408 INFO L902 garLoopResultBuilder]: At program point L125(lines 64 129) the Hoare annotation is: true [2022-11-19 08:01:08,408 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 90) no Hoare annotation was computed. [2022-11-19 08:01:08,409 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 84 90) no Hoare annotation was computed. [2022-11-19 08:01:08,409 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 176 200) the Hoare annotation is: (let ((.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse5 (not (= ~waterLevel~0 1))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse2 .cse3) (or .cse0 .cse1 .cse4 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse3) (or .cse5 .cse0 .cse1 .cse2 .cse3) (or .cse5 .cse0 .cse1 .cse4 .cse3))) [2022-11-19 08:01:08,410 INFO L895 garLoopResultBuilder]: At program point L190(line 190) the Hoare annotation is: (let ((.cse3 (not (= ~methaneLevelCritical~0 1))) (.cse5 (not (= 2 ~waterLevel~0))) (.cse0 (not (= ~waterLevel~0 1))) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse6 (not (= ~methaneLevelCritical~0 0))) (.cse2 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0))) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse5 .cse3 .cse4) (or .cse1 .cse5 .cse6 .cse4) (or .cse0 .cse1 .cse6 .cse2 .cse4))) [2022-11-19 08:01:08,411 INFO L899 garLoopResultBuilder]: For program point L184(lines 184 192) no Hoare annotation was computed. [2022-11-19 08:01:08,411 INFO L895 garLoopResultBuilder]: At program point L180(lines 180 197) the Hoare annotation is: (let ((.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse5 (not (= ~waterLevel~0 1))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse2 .cse3) (or .cse0 .cse1 .cse4 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse3) (or .cse5 .cse0 .cse1 .cse2 .cse3) (or .cse5 .cse0 .cse1 .cse4 .cse3))) [2022-11-19 08:01:08,411 INFO L895 garLoopResultBuilder]: At program point L195(line 195) the Hoare annotation is: (let ((.cse0 (not (= ~waterLevel~0 1))) (.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (not (= 2 ~waterLevel~0))) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse4 .cse3) (or .cse1 .cse5 .cse2 .cse3) (or .cse1 .cse5 .cse4 .cse3))) [2022-11-19 08:01:08,411 INFO L899 garLoopResultBuilder]: For program point L195-1(lines 176 200) no Hoare annotation was computed. [2022-11-19 08:01:08,412 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 176 200) no Hoare annotation was computed. [2022-11-19 08:01:08,412 INFO L895 garLoopResultBuilder]: At program point L266(line 266) the Hoare annotation is: (let ((.cse0 (not (= ~waterLevel~0 1))) (.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse5 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1))) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse4 .cse3) (or .cse5 .cse1 (not (= 2 ~waterLevel~0)) .cse2 .cse3) (or .cse5 .cse1 .cse4 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse3))) [2022-11-19 08:01:08,412 INFO L895 garLoopResultBuilder]: At program point L266-1(line 266) the Hoare annotation is: (let ((.cse0 (not (= ~waterLevel~0 1))) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (not (= 2 ~waterLevel~0))) (.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse3 (= 0 ~systemActive~0)) (.cse6 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1) (= ~methaneLevelCritical~0 |processEnvironment__wrappee__highWaterSensor_activatePump_#t~ret11#1|)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse4 .cse3) (or .cse1 .cse5 .cse4 .cse3 .cse6) (or .cse1 .cse5 .cse2 .cse3 .cse6))) [2022-11-19 08:01:08,413 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 930 941) no Hoare annotation was computed. [2022-11-19 08:01:08,413 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 930 941) the Hoare annotation is: (let ((.cse4 (not (= |old(~waterLevel~0)| 1))) (.cse0 (not (= ~methaneLevelCritical~0 0))) (.cse6 (= ~waterLevel~0 1)) (.cse3 (not (= ~pumpRunning~0 0))) (.cse5 (not (= ~methaneLevelCritical~0 1))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 (not (= ~pumpRunning~0 1)) (not (= |old(~waterLevel~0)| 2)) .cse1 .cse2) (or .cse3 .cse4 .cse5 .cse2 .cse6) (or .cse3 .cse4 .cse0 .cse2 .cse6) (or .cse3 .cse5 .cse1 .cse2 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-19 08:01:08,413 INFO L895 garLoopResultBuilder]: At program point L221(line 221) the Hoare annotation is: (let ((.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse4 (not (= ~waterLevel~0 1))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse5 (not (= ~methaneLevelCritical~0 0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse2 .cse3) (or .cse4 .cse5 (not (= |old(~pumpRunning~0)| 1)) .cse3) (or .cse0 .cse1 .cse5 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse3) (or .cse4 .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse0 .cse1 .cse5 .cse3))) [2022-11-19 08:01:08,413 INFO L899 garLoopResultBuilder]: For program point L221-1(lines 202 226) no Hoare annotation was computed. [2022-11-19 08:01:08,414 INFO L895 garLoopResultBuilder]: At program point L216(line 216) the Hoare annotation is: (let ((.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse0 (not (= ~waterLevel~0 1))) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (not (= 2 ~waterLevel~0))) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse4 .cse3) (or .cse1 .cse5 .cse2 .cse3) (or .cse0 .cse4 (not (= |old(~pumpRunning~0)| 1)) .cse3) (or .cse1 .cse5 .cse4 .cse3))) [2022-11-19 08:01:08,414 INFO L895 garLoopResultBuilder]: At program point L212(line 212) the Hoare annotation is: (let ((.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (not (= 2 ~waterLevel~0))) (.cse0 (not (= ~waterLevel~0 1))) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse4 .cse3) (or .cse1 .cse5 .cse2 .cse3) (or .cse1 .cse5 .cse4 .cse3) (or .cse0 .cse4 (not (= |old(~pumpRunning~0)| 1)) (and (<= 1 |processEnvironment__wrappee__methaneQuery_~tmp~2#1|) (= ~pumpRunning~0 1)) .cse3))) [2022-11-19 08:01:08,414 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 218) no Hoare annotation was computed. [2022-11-19 08:01:08,416 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 202 226) the Hoare annotation is: (let ((.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse5 (not (= ~waterLevel~0 1))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse2 .cse3) (or .cse0 .cse1 .cse4 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse3) (or .cse5 .cse4 (not (= |old(~pumpRunning~0)| 1)) .cse3 (= ~pumpRunning~0 1)) (or .cse5 .cse0 .cse1 .cse2 .cse3) (or .cse5 .cse0 .cse1 .cse4 .cse3))) [2022-11-19 08:01:08,416 INFO L895 garLoopResultBuilder]: At program point L206(lines 206 223) the Hoare annotation is: (let ((.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse5 (not (= ~waterLevel~0 1))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse2 .cse3) (or .cse0 .cse1 .cse4 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse3) (or .cse5 .cse4 (not (= |old(~pumpRunning~0)| 1)) .cse3 (= ~pumpRunning~0 1)) (or .cse5 .cse0 .cse1 .cse2 .cse3) (or .cse5 .cse0 .cse1 .cse4 .cse3))) [2022-11-19 08:01:08,416 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 202 226) no Hoare annotation was computed. [2022-11-19 08:01:08,417 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 286 296) the Hoare annotation is: true [2022-11-19 08:01:08,417 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 286 296) no Hoare annotation was computed. [2022-11-19 08:01:08,420 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:01:08,425 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:01:08,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:01:08 BoogieIcfgContainer [2022-11-19 08:01:08,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:01:08,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:01:08,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:01:08,496 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:01:08,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:27" (3/4) ... [2022-11-19 08:01:08,500 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 08:01:08,505 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-19 08:01:08,506 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-19 08:01:08,506 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-19 08:01:08,506 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-19 08:01:08,506 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-19 08:01:08,507 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 08:01:08,507 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-19 08:01:08,507 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-19 08:01:08,507 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-19 08:01:08,518 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 54 nodes and edges [2022-11-19 08:01:08,520 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-19 08:01:08,521 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 08:01:08,522 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:01:08,522 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:01:08,548 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) || (\old(waterLevel) == waterLevel && pumpRunning == 1))) && (((((((methaneLevelCritical == 1 && pumpRunning == 1) || (pumpRunning == 0 && methaneLevelCritical == 0)) && \old(waterLevel) == waterLevel) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) && (!(\old(pumpRunning) == 1) || !(methaneLevelCritical == 1)))) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) [2022-11-19 08:01:08,549 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && tmp == 1) && waterLevel == 1) && !(0 == systemActive)) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel == 1) && !(0 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) [2022-11-19 08:01:08,550 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && tmp == 1) && waterLevel == 1) && !(0 == systemActive)) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel == 1) && !(0 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) [2022-11-19 08:01:08,550 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(2 == waterLevel)) || !(methaneLevelCritical == 1)) || 0 == systemActive) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(methaneLevelCritical == 0)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive)) && ((((!(waterLevel == 1) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || pumpRunning == 1)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) [2022-11-19 08:01:08,552 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(2 == waterLevel)) || !(methaneLevelCritical == 1)) || 0 == systemActive) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(methaneLevelCritical == 0)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) [2022-11-19 08:01:08,553 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 1)) || ((((pumpRunning == 0 && tmp == 1) && \old(pumpRunning) == 0) && waterLevel == 1) && !(0 == systemActive))) || 0 == systemActive)) && (((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && 2 <= tmp) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((((((pumpRunning == 0 && tmp == 1) && tmp == 1) && waterLevel == 1) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((2 <= tmp && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || ((((pumpRunning == 0 && tmp == 1) && \old(pumpRunning) == 0) && waterLevel == 1) && !(0 == systemActive))) || 0 == systemActive) [2022-11-19 08:01:08,553 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || 0 == systemActive) && (((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && 2 <= tmp) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((((((pumpRunning == 0 && tmp == 1) && tmp == 1) && waterLevel == 1) && !(0 == systemActive)) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive) || (((pumpRunning == 0 && tmp == 1) && waterLevel == 1) && !(0 == systemActive)))) && (((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((2 <= tmp && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || 0 == systemActive) [2022-11-19 08:01:08,553 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(methaneLevelCritical == 1)) || 0 == systemActive) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(methaneLevelCritical == 0)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(2 == waterLevel)) || !(methaneLevelCritical == 0)) || 0 == systemActive) || ((pumpRunning == 0 && tmp == 1) && methaneLevelCritical == aux-isMethaneAlarm()-aux))) && ((((!(\old(pumpRunning) == 0) || !(2 == waterLevel)) || !(methaneLevelCritical == 1)) || 0 == systemActive) || ((pumpRunning == 0 && tmp == 1) && methaneLevelCritical == aux-isMethaneAlarm()-aux)) [2022-11-19 08:01:08,556 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && (((0 == systemActive || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) && (!(\old(pumpRunning) == 1) || !(methaneLevelCritical == 1)))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || 0 == systemActive) [2022-11-19 08:01:08,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:01:08,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:01:08,611 INFO L158 Benchmark]: Toolchain (without parser) took 103228.35ms. Allocated memory was 96.5MB in the beginning and 708.8MB in the end (delta: 612.4MB). Free memory was 65.0MB in the beginning and 603.0MB in the end (delta: -537.9MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. [2022-11-19 08:01:08,612 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:01:08,613 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.04ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 64.8MB in the beginning and 102.4MB in the end (delta: -37.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:01:08,614 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.43ms. Allocated memory is still 134.2MB. Free memory was 102.4MB in the beginning and 100.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:01:08,614 INFO L158 Benchmark]: Boogie Preprocessor took 35.31ms. Allocated memory is still 134.2MB. Free memory was 100.3MB in the beginning and 98.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:01:08,614 INFO L158 Benchmark]: RCFGBuilder took 929.07ms. Allocated memory is still 134.2MB. Free memory was 98.2MB in the beginning and 106.6MB in the end (delta: -8.4MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2022-11-19 08:01:08,615 INFO L158 Benchmark]: TraceAbstraction took 101318.72ms. Allocated memory was 134.2MB in the beginning and 708.8MB in the end (delta: 574.6MB). Free memory was 105.9MB in the beginning and 609.2MB in the end (delta: -503.3MB). Peak memory consumption was 430.7MB. Max. memory is 16.1GB. [2022-11-19 08:01:08,615 INFO L158 Benchmark]: Witness Printer took 127.13ms. Allocated memory is still 708.8MB. Free memory was 609.2MB in the beginning and 603.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 08:01:08,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 750.04ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 64.8MB in the beginning and 102.4MB in the end (delta: -37.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.43ms. Allocated memory is still 134.2MB. Free memory was 102.4MB in the beginning and 100.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.31ms. Allocated memory is still 134.2MB. Free memory was 100.3MB in the beginning and 98.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 929.07ms. Allocated memory is still 134.2MB. Free memory was 98.2MB in the beginning and 106.6MB in the end (delta: -8.4MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * TraceAbstraction took 101318.72ms. Allocated memory was 134.2MB in the beginning and 708.8MB in the end (delta: 574.6MB). Free memory was 105.9MB in the beginning and 609.2MB in the end (delta: -503.3MB). Peak memory consumption was 430.7MB. Max. memory is 16.1GB. * Witness Printer took 127.13ms. Allocated memory is still 708.8MB. Free memory was 609.2MB in the beginning and 603.0MB 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 10 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 101.2s, OverallIterations: 16, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 12.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4135 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4076 mSDsluCounter, 3884 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2909 mSDsCounter, 2449 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7623 IncrementalHoareTripleChecker+Invalid, 10072 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2449 mSolverCounterUnsat, 975 mSDtfsCounter, 7623 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2237 GetRequests, 1651 SyntacticMatches, 75 SemanticMatches, 511 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18277 ImplicationChecksByTransitivity, 41.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1870occurred in iteration=15, InterpolantAutomatonStates: 223, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 1433 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 4441 PreInvPairs, 4790 NumberOfFragments, 3068 HoareAnnotationTreeSize, 4441 FomulaSimplifications, 40290 FormulaSimplificationTreeSizeReduction, 2.3s HoareSimplificationTime, 41 FomulaSimplificationsInter, 76611 FormulaSimplificationTreeSizeReductionInter, 10.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 1890 NumberOfCodeBlocks, 1709 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2414 ConstructedInterpolants, 0 QuantifiedInterpolants, 7745 SizeOfPredicates, 74 NumberOfNonLiveVariables, 2591 ConjunctsInSsa, 224 ConjunctsInUnsatCore, 28 InterpolantComputations, 11 PerfectInterpolantSequences, 1618/2030 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: 155]: Loop Invariant Derived loop invariant: (((((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && tmp == 1) && waterLevel == 1) && !(0 == systemActive)) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel == 1) && !(0 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && (((0 == systemActive || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) && (!(\old(pumpRunning) == 1) || !(methaneLevelCritical == 1)))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || 0 == systemActive) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: (((((((pumpRunning == 0 && tmp == 1) && methaneLevelCritical == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive) || (((((pumpRunning == 0 && 2 == waterLevel) && tmp == 1) && methaneLevelCritical == 1) && splverifierCounter == 0) && tmp == systemActive)) || (((((2 == waterLevel && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive) && pumpRunning == 1)) || (((((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive) - InvariantResult [Line: 536]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: (((((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) && ((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && tmp == 1) && waterLevel == 1) && !(0 == systemActive)) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel == 1) && !(0 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) - InvariantResult [Line: 144]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) || (\old(waterLevel) == waterLevel && pumpRunning == 1))) && (((((((methaneLevelCritical == 1 && pumpRunning == 1) || (pumpRunning == 0 && methaneLevelCritical == 0)) && \old(waterLevel) == waterLevel) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) && (!(\old(pumpRunning) == 1) || !(methaneLevelCritical == 1)))) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) - InvariantResult [Line: 206]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(2 == waterLevel)) || !(methaneLevelCritical == 1)) || 0 == systemActive) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(methaneLevelCritical == 0)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive)) && ((((!(waterLevel == 1) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || pumpRunning == 1)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) - InvariantResult [Line: 390]: Loop Invariant Derived loop invariant: ((((((((!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || 0 == systemActive) && (((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && 2 <= tmp) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((((((pumpRunning == 0 && tmp == 1) && tmp == 1) && waterLevel == 1) && !(0 == systemActive)) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive) || (((pumpRunning == 0 && tmp == 1) && waterLevel == 1) && !(0 == systemActive)))) && (((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((2 <= tmp && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || 0 == systemActive) - InvariantResult [Line: 465]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 286]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: ((((((((pumpRunning == 0 && tmp == 1) && methaneLevelCritical == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive) || (((((pumpRunning == 0 && 2 == waterLevel) && tmp == 1) && methaneLevelCritical == 1) && splverifierCounter == 0) && tmp == systemActive)) || (((((2 == waterLevel && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive) && pumpRunning == 1)) || (((((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive)) || ((((((methaneLevelCritical == 1 && pumpRunning == 1) || (pumpRunning == 0 && methaneLevelCritical == 0)) && 2 == waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive) - InvariantResult [Line: 180]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(2 == waterLevel)) || !(methaneLevelCritical == 1)) || 0 == systemActive) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(methaneLevelCritical == 0)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) - InvariantResult [Line: 398]: Loop Invariant Derived loop invariant: ((((((((!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 1)) || ((((pumpRunning == 0 && tmp == 1) && \old(pumpRunning) == 0) && waterLevel == 1) && !(0 == systemActive))) || 0 == systemActive)) && (((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && 2 <= tmp) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((((((pumpRunning == 0 && tmp == 1) && tmp == 1) && waterLevel == 1) || !(\old(pumpRunning) == 1)) || !(methaneLevelCritical == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((2 <= tmp && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || ((((pumpRunning == 0 && tmp == 1) && \old(pumpRunning) == 0) && waterLevel == 1) && !(0 == systemActive))) || 0 == systemActive) - InvariantResult [Line: 266]: Loop Invariant Derived loop invariant: (((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(methaneLevelCritical == 1)) || 0 == systemActive) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(methaneLevelCritical == 0)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(2 == waterLevel)) || !(methaneLevelCritical == 0)) || 0 == systemActive) || ((pumpRunning == 0 && tmp == 1) && methaneLevelCritical == aux-isMethaneAlarm()-aux))) && ((((!(\old(pumpRunning) == 0) || !(2 == waterLevel)) || !(methaneLevelCritical == 1)) || 0 == systemActive) || ((pumpRunning == 0 && tmp == 1) && methaneLevelCritical == aux-isMethaneAlarm()-aux)) - InvariantResult [Line: 536]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && waterLevel == 1) && tmp == systemActive - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 455]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 08:01:08,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da88f95f-7eca-4afa-aa61-fe9eca473f77/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