./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f18c518732faf536b365bed3360055c2f4eb753a861011ef1bbe74f5b721db8d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:47:39,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:47:39,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:47:39,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:47:39,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:47:39,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:47:39,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:47:39,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:47:39,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:47:39,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:47:39,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:47:39,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:47:39,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:47:39,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:47:39,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:47:39,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:47:39,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:47:39,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:47:39,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:47:39,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:47:39,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:47:39,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:47:39,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:47:39,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:47:39,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:47:39,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:47:39,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:47:39,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:47:39,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:47:39,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:47:39,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:47:39,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:47:39,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:47:39,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:47:39,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:47:39,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:47:39,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:47:39,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:47:39,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:47:39,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:47:39,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:47:39,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:47:39,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:47:39,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:47:39,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:47:39,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:47:39,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:47:39,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:47:39,918 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:47:39,918 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:47:39,918 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:47:39,918 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:47:39,919 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:47:39,919 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:47:39,919 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:47:39,919 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:47:39,919 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:47:39,919 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:47:39,920 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:47:39,920 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:47:39,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:47:39,921 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:47:39,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:47:39,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:47:39,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:47:39,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:47:39,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:47:39,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:47:39,922 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:47:39,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:47:39,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:47:39,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:47:39,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:47:39,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:47:39,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:47:39,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:47:39,928 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:47:39,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:47:39,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:47:39,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:47:39,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:47:39,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:47:39,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:47:39,929 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_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f18c518732faf536b365bed3360055c2f4eb753a861011ef1bbe74f5b721db8d [2022-11-03 03:47:40,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:47:40,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:47:40,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:47:40,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:47:40,239 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:47:40,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c [2022-11-03 03:47:40,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/data/dac2b820e/9ebc186a11bc4e1ba274989e39f7cdde/FLAG7a1d9d40e [2022-11-03 03:47:40,857 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:47:40,858 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c [2022-11-03 03:47:40,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/data/dac2b820e/9ebc186a11bc4e1ba274989e39f7cdde/FLAG7a1d9d40e [2022-11-03 03:47:41,138 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/data/dac2b820e/9ebc186a11bc4e1ba274989e39f7cdde [2022-11-03 03:47:41,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:47:41,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:47:41,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:47:41,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:47:41,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:47:41,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79eae7f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41, skipping insertion in model container [2022-11-03 03:47:41,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:47:41,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:47:41,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c[18005,18018] [2022-11-03 03:47:41,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:47:41,679 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:47:41,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c[18005,18018] [2022-11-03 03:47:41,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:47:41,814 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:47:41,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41 WrapperNode [2022-11-03 03:47:41,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:47:41,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:47:41,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:47:41,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:47:41,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,876 INFO L138 Inliner]: procedures = 57, calls = 157, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 261 [2022-11-03 03:47:41,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:47:41,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:47:41,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:47:41,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:47:41,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,906 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:47:41,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:47:41,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:47:41,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:47:41,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:47:41,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:41,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:47:41,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:47:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:47:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-03 03:47:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-03 03:47:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 03:47:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 03:47:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 03:47:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 03:47:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-03 03:47:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-03 03:47:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2022-11-03 03:47:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2022-11-03 03:47:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:47:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-03 03:47:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-03 03:47:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:47:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:47:42,154 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:47:42,157 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:47:42,564 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:47:42,805 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:47:42,806 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:47:42,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:42 BoogieIcfgContainer [2022-11-03 03:47:42,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:47:42,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:47:42,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:47:42,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:47:42,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:47:41" (1/3) ... [2022-11-03 03:47:42,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5914fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:47:42, skipping insertion in model container [2022-11-03 03:47:42,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41" (2/3) ... [2022-11-03 03:47:42,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5914fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:47:42, skipping insertion in model container [2022-11-03 03:47:42,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:42" (3/3) ... [2022-11-03 03:47:42,827 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product44.cil.c [2022-11-03 03:47:42,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:47:42,858 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:47:42,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:47:42,978 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;@7e1e5142, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:47:42,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:47:42,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 03:47:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:47:43,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:43,006 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:43,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:43,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1325256327, now seen corresponding path program 1 times [2022-11-03 03:47:43,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:43,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959376233] [2022-11-03 03:47:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:43,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:47:43,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:43,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959376233] [2022-11-03 03:47:43,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959376233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:43,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:43,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:47:43,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074366952] [2022-11-03 03:47:43,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:43,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:47:43,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:43,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:47:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:47:43,400 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:47:43,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:43,524 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-11-03 03:47:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:47:43,528 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-11-03 03:47:43,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:43,539 INFO L225 Difference]: With dead ends: 100 [2022-11-03 03:47:43,540 INFO L226 Difference]: Without dead ends: 46 [2022-11-03 03:47:43,545 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 [2022-11-03 03:47:43,549 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:43,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:43,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-03 03:47:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-03 03:47:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3) internal successors, (39), 35 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:47:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-11-03 03:47:43,606 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 21 [2022-11-03 03:47:43,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:43,606 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-11-03 03:47:43,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:47:43,607 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-11-03 03:47:43,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 03:47:43,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:43,610 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:43,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:47:43,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:43,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1801005259, now seen corresponding path program 1 times [2022-11-03 03:47:43,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:43,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703875122] [2022-11-03 03:47:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:43,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:47:43,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:43,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703875122] [2022-11-03 03:47:43,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703875122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:43,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:43,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:43,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918646008] [2022-11-03 03:47:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:43,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:43,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:43,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:43,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:43,850 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:47:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:43,903 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2022-11-03 03:47:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:43,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-03 03:47:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:43,906 INFO L225 Difference]: With dead ends: 69 [2022-11-03 03:47:43,906 INFO L226 Difference]: Without dead ends: 38 [2022-11-03 03:47:43,907 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 [2022-11-03 03:47:43,908 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:43,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:47:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-03 03:47:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-03 03:47:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-03 03:47:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-03 03:47:43,919 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 22 [2022-11-03 03:47:43,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:43,920 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-03 03:47:43,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:47:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-03 03:47:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 03:47:43,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:43,922 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:43,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:47:43,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:43,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:43,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1801776207, now seen corresponding path program 1 times [2022-11-03 03:47:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:43,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557915212] [2022-11-03 03:47:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:43,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:47:44,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:44,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557915212] [2022-11-03 03:47:44,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557915212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:44,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:44,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:47:44,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482829686] [2022-11-03 03:47:44,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:44,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:47:44,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:44,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:47:44,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:47:44,325 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:47:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:44,930 INFO L93 Difference]: Finished difference Result 145 states and 181 transitions. [2022-11-03 03:47:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 03:47:44,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-11-03 03:47:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:44,938 INFO L225 Difference]: With dead ends: 145 [2022-11-03 03:47:44,939 INFO L226 Difference]: Without dead ends: 109 [2022-11-03 03:47:44,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:47:44,951 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 74 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:44,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 289 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:47:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-03 03:47:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 76. [2022-11-03 03:47:44,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.26) internal successors, (63), 56 states have internal predecessors, (63), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (15), 12 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-03 03:47:44,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2022-11-03 03:47:44,991 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 24 [2022-11-03 03:47:44,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:44,992 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2022-11-03 03:47:44,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:47:44,992 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2022-11-03 03:47:44,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 03:47:44,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:44,994 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:44,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:47:44,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:44,995 INFO L85 PathProgramCache]: Analyzing trace with hash 735581937, now seen corresponding path program 1 times [2022-11-03 03:47:44,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:44,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332875043] [2022-11-03 03:47:44,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:44,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:47:45,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:45,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332875043] [2022-11-03 03:47:45,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332875043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:45,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:45,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:47:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53820742] [2022-11-03 03:47:45,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:45,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:47:45,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:45,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:47:45,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:47:45,517 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:47:45,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:45,703 INFO L93 Difference]: Finished difference Result 228 states and 284 transitions. [2022-11-03 03:47:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:47:45,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-11-03 03:47:45,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:45,712 INFO L225 Difference]: With dead ends: 228 [2022-11-03 03:47:45,712 INFO L226 Difference]: Without dead ends: 154 [2022-11-03 03:47:45,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:47:45,722 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 73 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:45,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 160 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:45,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-03 03:47:45,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 118. [2022-11-03 03:47:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 88 states have internal predecessors, (100), 19 states have call successors, (19), 17 states have call predecessors, (19), 19 states have return successors, (25), 17 states have call predecessors, (25), 19 states have call successors, (25) [2022-11-03 03:47:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 144 transitions. [2022-11-03 03:47:45,784 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 144 transitions. Word has length 27 [2022-11-03 03:47:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:45,784 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 144 transitions. [2022-11-03 03:47:45,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:47:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2022-11-03 03:47:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 03:47:45,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:45,787 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:45,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:47:45,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:45,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:45,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1743544795, now seen corresponding path program 1 times [2022-11-03 03:47:45,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:45,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890099481] [2022-11-03 03:47:45,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:45,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:47:46,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:46,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890099481] [2022-11-03 03:47:46,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890099481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:46,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:46,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:47:46,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869315714] [2022-11-03 03:47:46,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:46,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:47:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:47:46,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:47:46,228 INFO L87 Difference]: Start difference. First operand 118 states and 144 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:47:46,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:46,801 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2022-11-03 03:47:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 03:47:46,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-11-03 03:47:46,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:46,809 INFO L225 Difference]: With dead ends: 289 [2022-11-03 03:47:46,810 INFO L226 Difference]: Without dead ends: 212 [2022-11-03 03:47:46,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:47:46,820 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 140 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:46,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 238 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:47:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-03 03:47:46,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 161. [2022-11-03 03:47:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 107 states have (on average 1.2523364485981308) internal successors, (134), 121 states have internal predecessors, (134), 26 states have call successors, (26), 23 states have call predecessors, (26), 27 states have return successors, (34), 24 states have call predecessors, (34), 26 states have call successors, (34) [2022-11-03 03:47:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2022-11-03 03:47:46,881 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 30 [2022-11-03 03:47:46,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:46,881 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2022-11-03 03:47:46,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:47:46,882 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2022-11-03 03:47:46,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 03:47:46,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:46,884 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:46,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:47:46,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:46,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash 521581281, now seen corresponding path program 1 times [2022-11-03 03:47:46,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:46,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196555415] [2022-11-03 03:47:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:46,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:47:47,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:47,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196555415] [2022-11-03 03:47:47,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196555415] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:47,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334891488] [2022-11-03 03:47:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:47,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:47,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:47,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:47,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:47:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:47,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 03:47:47,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:47,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:47:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:47:48,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334891488] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:47:48,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1110928206] [2022-11-03 03:47:48,198 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-03 03:47:48,199 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:47:48,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:47:48,211 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:47:48,212 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:47:53,742 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 59 for LOIs [2022-11-03 03:47:54,162 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 44 for LOIs [2022-11-03 03:47:54,170 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:48:00,985 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2376#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (<= ~pumpRunning~0 2147483647) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2)) (= ~methaneLevelCritical~0 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (<= 1 |old(~waterLevel~0)|) (= ~head~0.base 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (<= |old(~waterLevel~0)| 2) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= |timeShift_getWaterLevel_~retValue_acc~1#1| 2) (<= 0 ~waterLevel~0) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-03 03:48:00,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:48:00,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:48:00,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 17 [2022-11-03 03:48:00,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250812323] [2022-11-03 03:48:00,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:48:00,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:48:00,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:00,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:48:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1427, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 03:48:00,988 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-03 03:48:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:03,348 INFO L93 Difference]: Finished difference Result 603 states and 779 transitions. [2022-11-03 03:48:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-03 03:48:03,349 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 44 [2022-11-03 03:48:03,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:03,353 INFO L225 Difference]: With dead ends: 603 [2022-11-03 03:48:03,354 INFO L226 Difference]: Without dead ends: 509 [2022-11-03 03:48:03,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=671, Invalid=4441, Unknown=0, NotChecked=0, Total=5112 [2022-11-03 03:48:03,358 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 417 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:03,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 550 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 03:48:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-03 03:48:03,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 337. [2022-11-03 03:48:03,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 224 states have (on average 1.21875) internal successors, (273), 254 states have internal predecessors, (273), 53 states have call successors, (53), 49 states have call predecessors, (53), 59 states have return successors, (90), 51 states have call predecessors, (90), 53 states have call successors, (90) [2022-11-03 03:48:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 416 transitions. [2022-11-03 03:48:03,429 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 416 transitions. Word has length 44 [2022-11-03 03:48:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:03,429 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 416 transitions. [2022-11-03 03:48:03,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-03 03:48:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 416 transitions. [2022-11-03 03:48:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 03:48:03,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:03,433 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:03,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:03,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:03,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:03,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1816178952, now seen corresponding path program 1 times [2022-11-03 03:48:03,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:03,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273982699] [2022-11-03 03:48:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:48:03,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:03,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273982699] [2022-11-03 03:48:03,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273982699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:48:03,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885006950] [2022-11-03 03:48:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:03,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:03,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:03,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:48:03,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:48:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:04,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 03:48:04,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:04,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:48:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:48:04,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885006950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:48:04,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1320499349] [2022-11-03 03:48:04,634 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-03 03:48:04,635 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:48:04,635 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:48:04,635 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:48:04,636 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:48:08,103 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 60 for LOIs [2022-11-03 03:48:08,664 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 20 for LOIs [2022-11-03 03:48:08,670 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:48:14,546 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4247#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (<= 0 (+ |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2147483648)) (<= 0 (+ ~waterLevel~0 2147483648)) (<= 0 (+ 2147483648 |timeShift_getWaterLevel_#res#1|)) (<= ~waterLevel~0 2147483647) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2147483647) (= ~head~0.base 0) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 (+ |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483648)) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483647) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483647) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-03 03:48:14,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:48:14,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:48:14,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 18 [2022-11-03 03:48:14,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802911817] [2022-11-03 03:48:14,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:48:14,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:48:14,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:14,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:48:14,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1389, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 03:48:14,549 INFO L87 Difference]: Start difference. First operand 337 states and 416 transitions. Second operand has 18 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (15), 6 states have call predecessors, (15), 9 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-03 03:48:16,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:16,449 INFO L93 Difference]: Finished difference Result 941 states and 1190 transitions. [2022-11-03 03:48:16,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-03 03:48:16,454 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (15), 6 states have call predecessors, (15), 9 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) Word has length 50 [2022-11-03 03:48:16,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:16,459 INFO L225 Difference]: With dead ends: 941 [2022-11-03 03:48:16,459 INFO L226 Difference]: Without dead ends: 702 [2022-11-03 03:48:16,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=770, Invalid=5872, Unknown=0, NotChecked=0, Total=6642 [2022-11-03 03:48:16,464 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 314 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:16,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 418 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:48:16,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-03 03:48:16,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 550. [2022-11-03 03:48:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 361 states have (on average 1.1966759002770082) internal successors, (432), 408 states have internal predecessors, (432), 89 states have call successors, (89), 85 states have call predecessors, (89), 99 states have return successors, (151), 87 states have call predecessors, (151), 89 states have call successors, (151) [2022-11-03 03:48:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 672 transitions. [2022-11-03 03:48:16,565 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 672 transitions. Word has length 50 [2022-11-03 03:48:16,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:16,566 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 672 transitions. [2022-11-03 03:48:16,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (15), 6 states have call predecessors, (15), 9 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-03 03:48:16,566 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 672 transitions. [2022-11-03 03:48:16,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 03:48:16,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:16,568 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:16,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:16,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 03:48:16,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:16,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2091136722, now seen corresponding path program 1 times [2022-11-03 03:48:16,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:16,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546884173] [2022-11-03 03:48:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:16,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:48:17,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:17,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546884173] [2022-11-03 03:48:17,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546884173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:48:17,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846446716] [2022-11-03 03:48:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:17,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:17,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:17,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:48:17,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:48:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:17,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 03:48:17,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:48:17,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:48:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:48:18,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846446716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:48:18,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1420391309] [2022-11-03 03:48:18,292 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-03 03:48:18,293 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:48:18,293 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:48:18,293 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:48:18,294 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:48:21,040 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 52 for LOIs [2022-11-03 03:48:21,363 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 39 for LOIs [2022-11-03 03:48:21,369 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:48:26,187 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6993#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2)) (= ~methaneLevelCritical~0 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| |timeShift_getWaterLevel_#res#1|) (= |old(~pumpRunning~0)| 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 1) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= ~head~0.base 0) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483647) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-03 03:48:26,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:48:26,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:48:26,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-11-03 03:48:26,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361223267] [2022-11-03 03:48:26,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:48:26,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 03:48:26,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 03:48:26,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1781, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 03:48:26,192 INFO L87 Difference]: Start difference. First operand 550 states and 672 transitions. Second operand has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 8 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-03 03:48:28,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:28,375 INFO L93 Difference]: Finished difference Result 1065 states and 1319 transitions. [2022-11-03 03:48:28,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-03 03:48:28,376 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 8 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 49 [2022-11-03 03:48:28,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:28,380 INFO L225 Difference]: With dead ends: 1065 [2022-11-03 03:48:28,380 INFO L226 Difference]: Without dead ends: 653 [2022-11-03 03:48:28,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 114 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2013 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=912, Invalid=4788, Unknown=0, NotChecked=0, Total=5700 [2022-11-03 03:48:28,384 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 213 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:28,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 266 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:48:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-11-03 03:48:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 551. [2022-11-03 03:48:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 363 states have (on average 1.1955922865013775) internal successors, (434), 408 states have internal predecessors, (434), 89 states have call successors, (89), 85 states have call predecessors, (89), 98 states have return successors, (150), 88 states have call predecessors, (150), 89 states have call successors, (150) [2022-11-03 03:48:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 673 transitions. [2022-11-03 03:48:28,471 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 673 transitions. Word has length 49 [2022-11-03 03:48:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:28,471 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 673 transitions. [2022-11-03 03:48:28,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 8 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-03 03:48:28,472 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 673 transitions. [2022-11-03 03:48:28,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 03:48:28,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:28,473 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:28,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:28,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:28,687 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:28,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:28,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1095342392, now seen corresponding path program 1 times [2022-11-03 03:48:28,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:28,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810221787] [2022-11-03 03:48:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:28,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:48:29,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:29,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810221787] [2022-11-03 03:48:29,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810221787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:48:29,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239611991] [2022-11-03 03:48:29,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:29,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:29,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:29,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:48:29,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:48:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:29,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 03:48:29,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 03:48:30,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:48:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:48:30,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239611991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:48:30,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [289269282] [2022-11-03 03:48:30,719 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 03:48:30,720 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:48:30,720 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:48:30,720 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:48:30,721 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:48:50,196 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 324 for LOIs [2022-11-03 03:48:50,305 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 42 for LOIs [2022-11-03 03:48:50,650 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 30 for LOIs [2022-11-03 03:48:50,652 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:49:02,891 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9923#(and (<= |timeShift_isHighWaterLevel_~retValue_acc~8#1| 1) (<= 1 |timeShift_isHighWaterLevel_~tmp___0~0#1|) (<= |timeShift_isHighWaterLevel_#res#1| 1) (<= |timeShift_isMethaneLevelCritical_~retValue_acc~0#1| 0) (<= 0 |timeShift_isMethaneLevelCritical_#res#1|) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (<= 0 |timeShift_isMethaneAlarm_~retValue_acc~6#1|) (<= 0 |timeShift_activatePump_~tmp~4#1|) (<= 0 |timeShift_isHighWaterLevel_~tmp~5#1|) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2)) (<= 0 ~systemActive~0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (<= 1 |timeShift_processEnvironment_~tmp~3#1|) (= ~head~0.offset 0) (<= |timeShift_activatePump_~tmp~4#1| 0) (<= 2 ~waterLevel~0) (<= |old(~switchedOnBeforeTS~0)| 2147483647) (<= |timeShift_isMethaneLevelCritical_#res#1| 0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| |timeShift_getWaterLevel_#res#1|) (<= |timeShift_isHighWaterSensorDry_~retValue_acc~2#1| 0) (<= |timeShift_isHighWaterLevel_~tmp~5#1| 0) (<= 0 |timeShift_isHighWaterSensorDry_#res#1|) (= |old(~pumpRunning~0)| 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (<= |timeShift_isMethaneAlarm_#res#1| 0) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 1) (<= ~methaneLevelCritical~0 0) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (<= 1 |timeShift_isHighWaterLevel_~retValue_acc~8#1|) (<= |timeShift_isHighWaterLevel_~tmp___0~0#1| 1) (<= 0 ~head~0.base) (<= |timeShift_processEnvironment_~tmp~3#1| 1) (<= 0 (+ |old(~switchedOnBeforeTS~0)| 2147483648)) (<= 0 ~methaneLevelCritical~0) (<= ~head~0.base 0) (<= |timeShift_isMethaneAlarm_~retValue_acc~6#1| 0) (= |#NULL.offset| 0) (<= 0 |timeShift_isHighWaterSensorDry_~retValue_acc~2#1|) (<= |timeShift_isHighWaterSensorDry_#res#1| 0) (<= 0 |timeShift_isMethaneAlarm_#res#1|) (<= 0 |timeShift_isMethaneLevelCritical_~retValue_acc~0#1|) (<= 1 |timeShift_isHighWaterLevel_#res#1|) (<= 0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483647) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-03 03:49:02,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:49:02,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:49:02,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 27 [2022-11-03 03:49:02,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027880416] [2022-11-03 03:49:02,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:49:02,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 03:49:02,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:02,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 03:49:02,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2354, Unknown=0, NotChecked=0, Total=2652 [2022-11-03 03:49:02,894 INFO L87 Difference]: Start difference. First operand 551 states and 673 transitions. Second operand has 27 states, 22 states have (on average 3.090909090909091) internal successors, (68), 24 states have internal predecessors, (68), 9 states have call successors, (16), 7 states have call predecessors, (16), 11 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2022-11-03 03:49:06,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:06,588 INFO L93 Difference]: Finished difference Result 1245 states and 1576 transitions. [2022-11-03 03:49:06,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-03 03:49:06,589 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 3.090909090909091) internal successors, (68), 24 states have internal predecessors, (68), 9 states have call successors, (16), 7 states have call predecessors, (16), 11 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) Word has length 52 [2022-11-03 03:49:06,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:06,595 INFO L225 Difference]: With dead ends: 1245 [2022-11-03 03:49:06,595 INFO L226 Difference]: Without dead ends: 818 [2022-11-03 03:49:06,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 121 SyntacticMatches, 8 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3131 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=1153, Invalid=7777, Unknown=0, NotChecked=0, Total=8930 [2022-11-03 03:49:06,601 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 526 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:06,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 631 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 03:49:06,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-11-03 03:49:06,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 611. [2022-11-03 03:49:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 404 states have (on average 1.1856435643564356) internal successors, (479), 453 states have internal predecessors, (479), 98 states have call successors, (98), 92 states have call predecessors, (98), 108 states have return successors, (161), 96 states have call predecessors, (161), 98 states have call successors, (161) [2022-11-03 03:49:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 738 transitions. [2022-11-03 03:49:06,734 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 738 transitions. Word has length 52 [2022-11-03 03:49:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:06,734 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 738 transitions. [2022-11-03 03:49:06,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 3.090909090909091) internal successors, (68), 24 states have internal predecessors, (68), 9 states have call successors, (16), 7 states have call predecessors, (16), 11 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2022-11-03 03:49:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 738 transitions. [2022-11-03 03:49:06,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 03:49:06,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:06,738 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:06,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:06,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:49:06,963 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:06,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:06,963 INFO L85 PathProgramCache]: Analyzing trace with hash -886737681, now seen corresponding path program 1 times [2022-11-03 03:49:06,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:06,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468893274] [2022-11-03 03:49:06,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:06,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 66 proven. 30 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 03:49:07,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:07,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468893274] [2022-11-03 03:49:07,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468893274] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:49:07,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580272368] [2022-11-03 03:49:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:07,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:49:07,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:49:07,639 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:49:07,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:49:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:07,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 03:49:07,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 105 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 03:49:08,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 68 proven. 24 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-03 03:49:08,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580272368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:08,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [688329608] [2022-11-03 03:49:08,600 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 03:49:08,601 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:49:08,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:49:08,603 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:49:08,603 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:49:29,238 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 325 for LOIs [2022-11-03 03:49:29,305 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 45 for LOIs [2022-11-03 03:49:29,521 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 31 for LOIs [2022-11-03 03:49:29,523 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:49:39,435 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13520#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2)) (<= 0 ~systemActive~0) (= ~methaneLevelCritical~0 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (= ~head~0.offset 0) (<= |old(~switchedOnBeforeTS~0)| 2147483647) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| |timeShift_getWaterLevel_#res#1|) (<= |old(~pumpRunning~0)| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (<= 0 (+ |old(~switchedOnBeforeTS~0)| 2147483648)) (= ~head~0.base 0) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 (+ |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483648)) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483647) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483647) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-03 03:49:39,436 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:49:39,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:49:39,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 26 [2022-11-03 03:49:39,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996733692] [2022-11-03 03:49:39,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:49:39,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 03:49:39,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:39,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 03:49:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2022-11-03 03:49:39,440 INFO L87 Difference]: Start difference. First operand 611 states and 738 transitions. Second operand has 26 states, 23 states have (on average 4.086956521739131) internal successors, (94), 22 states have internal predecessors, (94), 9 states have call successors, (18), 5 states have call predecessors, (18), 8 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2022-11-03 03:49:41,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:41,210 INFO L93 Difference]: Finished difference Result 1061 states and 1298 transitions. [2022-11-03 03:49:41,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 03:49:41,213 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 4.086956521739131) internal successors, (94), 22 states have internal predecessors, (94), 9 states have call successors, (18), 5 states have call predecessors, (18), 8 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) Word has length 95 [2022-11-03 03:49:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:41,223 INFO L225 Difference]: With dead ends: 1061 [2022-11-03 03:49:41,224 INFO L226 Difference]: Without dead ends: 548 [2022-11-03 03:49:41,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 256 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2002 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=692, Invalid=5788, Unknown=0, NotChecked=0, Total=6480 [2022-11-03 03:49:41,229 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 534 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:41,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 420 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:49:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-11-03 03:49:41,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 461. [2022-11-03 03:49:41,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 307 states have (on average 1.1889250814332248) internal successors, (365), 344 states have internal predecessors, (365), 74 states have call successors, (74), 69 states have call predecessors, (74), 79 states have return successors, (114), 72 states have call predecessors, (114), 74 states have call successors, (114) [2022-11-03 03:49:41,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 553 transitions. [2022-11-03 03:49:41,335 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 553 transitions. Word has length 95 [2022-11-03 03:49:41,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:41,337 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 553 transitions. [2022-11-03 03:49:41,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 4.086956521739131) internal successors, (94), 22 states have internal predecessors, (94), 9 states have call successors, (18), 5 states have call predecessors, (18), 8 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2022-11-03 03:49:41,338 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 553 transitions. [2022-11-03 03:49:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 03:49:41,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:41,341 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:41,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:41,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 03:49:41,567 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:41,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:41,567 INFO L85 PathProgramCache]: Analyzing trace with hash 630651044, now seen corresponding path program 1 times [2022-11-03 03:49:41,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:41,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479884421] [2022-11-03 03:49:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:41,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 59 proven. 38 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 03:49:42,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:42,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479884421] [2022-11-03 03:49:42,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479884421] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:49:42,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968468821] [2022-11-03 03:49:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:42,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:49:42,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:49:42,739 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:49:42,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:49:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:42,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-03 03:49:42,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 79 proven. 48 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:49:43,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 79 proven. 21 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 03:49:44,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968468821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:44,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [237388957] [2022-11-03 03:49:44,073 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-03 03:49:44,073 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:49:44,073 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:49:44,073 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:49:44,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:50:03,860 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 325 for LOIs [2022-11-03 03:50:03,933 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 45 for LOIs [2022-11-03 03:50:04,248 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 31 for LOIs [2022-11-03 03:50:04,251 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 35 for LOIs [2022-11-03 03:50:04,253 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:50:15,355 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16619#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (<= ~pumpRunning~0 2147483647) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2)) (<= 0 ~systemActive~0) (= ~methaneLevelCritical~0 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (= ~head~0.offset 0) (<= |old(~switchedOnBeforeTS~0)| 2147483647) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| |timeShift_getWaterLevel_#res#1|) (<= |old(~pumpRunning~0)| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (<= 0 (+ |old(~switchedOnBeforeTS~0)| 2147483648)) (= ~head~0.base 0) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483648)) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483647) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-03 03:50:15,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:50:15,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:50:15,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 15] total 34 [2022-11-03 03:50:15,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299278963] [2022-11-03 03:50:15,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:50:15,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 03:50:15,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:15,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 03:50:15,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=3146, Unknown=0, NotChecked=0, Total=3540 [2022-11-03 03:50:15,359 INFO L87 Difference]: Start difference. First operand 461 states and 553 transitions. Second operand has 34 states, 32 states have (on average 3.75) internal successors, (120), 31 states have internal predecessors, (120), 15 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (27), 16 states have call predecessors, (27), 15 states have call successors, (27) [2022-11-03 03:50:20,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:20,384 INFO L93 Difference]: Finished difference Result 936 states and 1168 transitions. [2022-11-03 03:50:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-03 03:50:20,385 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 3.75) internal successors, (120), 31 states have internal predecessors, (120), 15 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (27), 16 states have call predecessors, (27), 15 states have call successors, (27) Word has length 100 [2022-11-03 03:50:20,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:20,391 INFO L225 Difference]: With dead ends: 936 [2022-11-03 03:50:20,391 INFO L226 Difference]: Without dead ends: 581 [2022-11-03 03:50:20,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 270 SyntacticMatches, 11 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5006 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=2330, Invalid=12190, Unknown=0, NotChecked=0, Total=14520 [2022-11-03 03:50:20,400 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 720 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 692 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:20,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 580 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [692 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 03:50:20,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-03 03:50:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 513. [2022-11-03 03:50:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 343 states have (on average 1.1778425655976676) internal successors, (404), 379 states have internal predecessors, (404), 84 states have call successors, (84), 77 states have call predecessors, (84), 85 states have return successors, (120), 79 states have call predecessors, (120), 84 states have call successors, (120) [2022-11-03 03:50:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 608 transitions. [2022-11-03 03:50:20,517 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 608 transitions. Word has length 100 [2022-11-03 03:50:20,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:20,519 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 608 transitions. [2022-11-03 03:50:20,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 3.75) internal successors, (120), 31 states have internal predecessors, (120), 15 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (27), 16 states have call predecessors, (27), 15 states have call successors, (27) [2022-11-03 03:50:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 608 transitions. [2022-11-03 03:50:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 03:50:20,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:20,529 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:20,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:20,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:50:20,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:20,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:20,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1479068574, now seen corresponding path program 2 times [2022-11-03 03:50:20,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:20,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198205555] [2022-11-03 03:50:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:20,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 87 proven. 89 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-03 03:50:22,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:22,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198205555] [2022-11-03 03:50:22,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198205555] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:50:22,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878339116] [2022-11-03 03:50:22,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:50:22,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:50:22,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:50:22,442 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:50:22,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:50:22,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-03 03:50:22,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:50:22,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-03 03:50:22,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 116 proven. 89 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-03 03:50:23,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:50:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 125 proven. 56 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-03 03:50:24,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878339116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:50:24,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1682011425] [2022-11-03 03:50:24,792 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-03 03:50:24,792 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:50:24,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:50:24,793 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:50:24,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:50:33,696 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 325 for LOIs [2022-11-03 03:50:33,774 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 45 for LOIs [2022-11-03 03:50:34,110 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 31 for LOIs [2022-11-03 03:50:34,113 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 35 for LOIs [2022-11-03 03:50:34,116 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:50:45,076 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19901#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| 2)) (<= 0 ~systemActive~0) (= ~methaneLevelCritical~0 0) (= |timeShift_getWaterLevel_~retValue_acc~1#1| ~waterLevel~0) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (= ~head~0.offset 0) (<= |old(~switchedOnBeforeTS~0)| 2147483647) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| |timeShift_getWaterLevel_#res#1|) (<= |old(~pumpRunning~0)| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~1#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (<= 0 (+ |old(~switchedOnBeforeTS~0)| 2147483648)) (= ~head~0.base 0) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 (+ |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483648)) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483647) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= |timeShift_getWaterLevel_~retValue_acc~1#1| 2147483647) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-03 03:50:45,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:50:45,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:50:45,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 21] total 51 [2022-11-03 03:50:45,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824035009] [2022-11-03 03:50:45,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:50:45,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-03 03:50:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:45,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-03 03:50:45,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=5216, Unknown=0, NotChecked=0, Total=5852 [2022-11-03 03:50:45,079 INFO L87 Difference]: Start difference. First operand 513 states and 608 transitions. Second operand has 51 states, 47 states have (on average 3.74468085106383) internal successors, (176), 47 states have internal predecessors, (176), 23 states have call successors, (38), 9 states have call predecessors, (38), 16 states have return successors, (39), 23 states have call predecessors, (39), 23 states have call successors, (39) [2022-11-03 03:50:49,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:49,890 INFO L93 Difference]: Finished difference Result 1111 states and 1319 transitions. [2022-11-03 03:50:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-03 03:50:49,890 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 3.74468085106383) internal successors, (176), 47 states have internal predecessors, (176), 23 states have call successors, (38), 9 states have call predecessors, (38), 16 states have return successors, (39), 23 states have call predecessors, (39), 23 states have call successors, (39) Word has length 131 [2022-11-03 03:50:49,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:49,891 INFO L225 Difference]: With dead ends: 1111 [2022-11-03 03:50:49,891 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 03:50:49,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 352 SyntacticMatches, 14 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7829 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=3629, Invalid=18127, Unknown=0, NotChecked=0, Total=21756 [2022-11-03 03:50:49,894 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 886 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:49,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 685 Invalid, 2679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 03:50:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 03:50:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 03:50:49,895 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) [2022-11-03 03:50:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 03:50:49,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 131 [2022-11-03 03:50:49,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:49,896 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 03:50:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 3.74468085106383) internal successors, (176), 47 states have internal predecessors, (176), 23 states have call successors, (38), 9 states have call predecessors, (38), 16 states have return successors, (39), 23 states have call predecessors, (39), 23 states have call successors, (39) [2022-11-03 03:50:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 03:50:49,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 03:50:49,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:50:49,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:50,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 03:50:50,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 03:51:10,173 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 556 562) no Hoare annotation was computed. [2022-11-03 03:51:10,173 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 556 562) the Hoare annotation is: true [2022-11-03 03:51:10,174 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 83 94) the Hoare annotation is: true [2022-11-03 03:51:10,174 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 83 94) no Hoare annotation was computed. [2022-11-03 03:51:10,174 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 831 860) no Hoare annotation was computed. [2022-11-03 03:51:10,174 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 831 860) the Hoare annotation is: true [2022-11-03 03:51:10,174 INFO L902 garLoopResultBuilder]: At program point L856(lines 831 860) the Hoare annotation is: true [2022-11-03 03:51:10,175 INFO L899 garLoopResultBuilder]: For program point L852(line 852) no Hoare annotation was computed. [2022-11-03 03:51:10,175 INFO L899 garLoopResultBuilder]: For program point L845(lines 845 849) no Hoare annotation was computed. [2022-11-03 03:51:10,175 INFO L902 garLoopResultBuilder]: At program point L845-1(lines 845 849) the Hoare annotation is: true [2022-11-03 03:51:10,175 INFO L902 garLoopResultBuilder]: At program point L841-2(lines 841 855) the Hoare annotation is: true [2022-11-03 03:51:10,175 INFO L902 garLoopResultBuilder]: At program point L837(line 837) the Hoare annotation is: true [2022-11-03 03:51:10,175 INFO L899 garLoopResultBuilder]: For program point L837-1(line 837) no Hoare annotation was computed. [2022-11-03 03:51:10,176 INFO L895 garLoopResultBuilder]: At program point L543-1(lines 543 549) the Hoare annotation is: (let ((.cse15 (= 0 ~systemActive~0))) (let ((.cse12 (not .cse15)) (.cse16 (= |old(~pumpRunning~0)| 0))) (let ((.cse3 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse11 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse2 (< 0 |old(~waterLevel~0)|)) (.cse7 (not .cse16)) (.cse13 (and .cse16 .cse12)) (.cse14 (= ~pumpRunning~0 0)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (let ((.cse9 (= ~switchedOnBeforeTS~0 0)) (.cse0 (not (<= |old(~waterLevel~0)| 1))) (.cse8 (and .cse14 .cse4 .cse15 .cse5)) (.cse6 (and (or (not (= |old(~waterLevel~0)| 1)) .cse13) (or .cse13 (= |old(~switchedOnBeforeTS~0)| 0)))) (.cse1 (and .cse7 .cse15)) (.cse10 (and .cse3 (not .cse14) .cse11 .cse2 (= ~waterLevel~0 1) .cse5 .cse12))) (and (or .cse0 .cse1 (not (<= 0 |old(~waterLevel~0)|)) .cse2 (and .cse3 .cse4 .cse5) .cse6) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 .cse7 .cse8 (and .cse4 (= |timeShift_processEnvironment_~tmp~3#1| 0) .cse5 .cse9)) (or .cse1 .cse10 (not (<= |old(~waterLevel~0)| 2)) (and .cse4 .cse9) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 .cse1 (and .cse3 .cse11 .cse2 .cse5 .cse12) .cse8 (not (<= 1 |old(~waterLevel~0)|)) .cse6) (or .cse1 .cse10 .cse13 (not (= |old(~waterLevel~0)| 2)) (and .cse14 .cse15))))))) [2022-11-03 03:51:10,177 INFO L895 garLoopResultBuilder]: At program point L572(lines 572 580) the Hoare annotation is: (let ((.cse9 (= |old(~pumpRunning~0)| 0)) (.cse10 (= 0 ~systemActive~0))) (let ((.cse4 (not .cse10)) (.cse7 (not .cse9))) (let ((.cse5 (not (<= |old(~waterLevel~0)| 2))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse3 (= ~switchedOnBeforeTS~0 0)) (.cse0 (and .cse7 .cse10)) (.cse6 (let ((.cse8 (and .cse9 .cse4))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse8) (or .cse8 (= |old(~switchedOnBeforeTS~0)| 0)))))) (and (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse2 .cse3 .cse4) .cse5 (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (<= 0 |old(~waterLevel~0)|)) (< 0 |old(~waterLevel~0)|) .cse6) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse7 .cse5 (and (or (<= 2 ~waterLevel~0) (= |timeShift_processEnvironment_~tmp~3#1| 0)) .cse1 .cse2 .cse3 .cse4)) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse6))))) [2022-11-03 03:51:10,177 INFO L895 garLoopResultBuilder]: At program point L568(lines 568 585) the Hoare annotation is: (let ((.cse15 (= 0 ~systemActive~0))) (let ((.cse14 (= ~pumpRunning~0 0)) (.cse16 (= |old(~pumpRunning~0)| 0)) (.cse9 (not .cse15))) (let ((.cse10 (and .cse16 .cse9)) (.cse7 (not .cse16)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (not .cse14)) (.cse13 (< 0 |old(~waterLevel~0)|))) (let ((.cse3 (= ~waterLevel~0 1)) (.cse6 (not (<= |old(~waterLevel~0)| 1))) (.cse8 (or .cse2 (and .cse5 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse13))) (.cse0 (and .cse7 .cse15)) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse11 (or (<= ~waterLevel~0 0) (and .cse14 (<= ~waterLevel~0 1)))) (.cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse12 (and (or (not (= |old(~waterLevel~0)| 1)) .cse10) (or .cse10 (= |old(~switchedOnBeforeTS~0)| 0))))) (and (or .cse0 (and .cse1 (or .cse2 .cse3) .cse4 (or .cse5 (<= 2 ~waterLevel~0))) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse6 .cse7 (and .cse8 .cse4 (= ~switchedOnBeforeTS~0 0) .cse9)) (or .cse0 .cse10 (not (= |old(~waterLevel~0)| 2)) .cse3) (or .cse6 .cse0 (and .cse1 .cse5 .cse8 .cse11 .cse4) (not (<= 1 |old(~waterLevel~0)|)) .cse12) (or .cse0 (not (<= 0 |old(~waterLevel~0)|)) .cse13 (and .cse1 .cse5 .cse11 .cse4 (<= 0 ~waterLevel~0)) .cse12)))))) [2022-11-03 03:51:10,177 INFO L899 garLoopResultBuilder]: For program point L969(lines 969 975) no Hoare annotation was computed. [2022-11-03 03:51:10,178 INFO L895 garLoopResultBuilder]: At program point L932(line 932) the Hoare annotation is: (let ((.cse5 (= |old(~pumpRunning~0)| 0))) (let ((.cse3 (not .cse5)) (.cse6 (= 0 ~systemActive~0))) (let ((.cse2 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (and .cse3 .cse6)) (.cse1 (let ((.cse4 (and .cse5 (not .cse6)))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse4) (or .cse4 (= |old(~switchedOnBeforeTS~0)| 0)))))) (and (or .cse0 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (<= 0 |old(~waterLevel~0)|)) (< 0 |old(~waterLevel~0)|) .cse1) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse2 .cse3) (or .cse2 .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse1))))) [2022-11-03 03:51:10,178 INFO L899 garLoopResultBuilder]: For program point L536-2(lines 532 554) no Hoare annotation was computed. [2022-11-03 03:51:10,178 INFO L895 garLoopResultBuilder]: At program point L966(line 966) the Hoare annotation is: (let ((.cse11 (= 0 ~systemActive~0)) (.cse13 (= |old(~pumpRunning~0)| 0))) (let ((.cse9 (= ~pumpRunning~0 0)) (.cse2 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| ~waterLevel~0)) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse10 (not .cse13)) (.cse8 (not .cse11))) (let ((.cse5 (let ((.cse12 (and .cse13 .cse8))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse12) (or .cse12 (= |old(~switchedOnBeforeTS~0)| 0))))) (.cse0 (and .cse10 .cse11)) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse6 (not (<= |old(~waterLevel~0)| 1))) (.cse7 (and .cse9 .cse2 .cse3 .cse11 .cse4))) (and (or .cse0 (and .cse1 .cse2 .cse3 .cse4) (not (<= 0 |old(~waterLevel~0)|)) (< 0 |old(~waterLevel~0)|) .cse5) (or .cse6 .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse7 (and .cse1 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse2 .cse4 .cse8) .cse5) (or .cse0 (and .cse1 (not .cse9) .cse2 (= ~waterLevel~0 1) .cse4) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse6 (and .cse2 .cse3 (= |timeShift_processEnvironment_~tmp~3#1| 0) .cse4 (= ~switchedOnBeforeTS~0 0)) .cse10 .cse7))))) [2022-11-03 03:51:10,178 INFO L899 garLoopResultBuilder]: For program point L966-1(line 966) no Hoare annotation was computed. [2022-11-03 03:51:10,179 INFO L895 garLoopResultBuilder]: At program point L578(line 578) the Hoare annotation is: (let ((.cse10 (= |old(~pumpRunning~0)| 0)) (.cse11 (= 0 ~systemActive~0))) (let ((.cse8 (not .cse11)) (.cse3 (not .cse10))) (let ((.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (= |timeShift_processEnvironment_~tmp~3#1| 0)) (.cse6 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse7 (= ~switchedOnBeforeTS~0 0)) (.cse2 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (and .cse3 .cse11)) (.cse1 (let ((.cse9 (and .cse10 .cse8))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse9) (or .cse9 (= |old(~switchedOnBeforeTS~0)| 0)))))) (and (or .cse0 (not (<= 0 |old(~waterLevel~0)|)) (< 0 |old(~waterLevel~0)|) .cse1) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse2 .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8)) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse4 .cse5 .cse6 .cse7 .cse8) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse2 .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse1))))) [2022-11-03 03:51:10,179 INFO L895 garLoopResultBuilder]: At program point L583(line 583) the Hoare annotation is: (let ((.cse8 (= |old(~pumpRunning~0)| 0)) (.cse9 (= 0 ~systemActive~0))) (let ((.cse5 (not .cse9)) (.cse1 (not .cse8))) (let ((.cse3 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse0 (not (<= |old(~waterLevel~0)| 1))) (.cse2 (and .cse1 .cse9)) (.cse6 (let ((.cse7 (and .cse8 .cse5))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse7) (or .cse7 (= |old(~switchedOnBeforeTS~0)| 0)))))) (and (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 .cse1) (or .cse2 (and .cse3 (not (= ~pumpRunning~0 0)) (= ~waterLevel~0 1) .cse4) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (and .cse3 (= |old(~waterLevel~0)| ~waterLevel~0) .cse4 .cse5) .cse0 .cse2 (not (<= 0 |old(~waterLevel~0)|)) (< 0 |old(~waterLevel~0)|) .cse6) (or (and .cse3 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse4 .cse5) .cse0 .cse2 (not (<= 1 |old(~waterLevel~0)|)) .cse6))))) [2022-11-03 03:51:10,180 INFO L895 garLoopResultBuilder]: At program point L583-1(lines 564 588) the Hoare annotation is: (let ((.cse10 (= 0 ~systemActive~0))) (let ((.cse11 (= |old(~pumpRunning~0)| 0)) (.cse8 (not .cse10))) (let ((.cse4 (and .cse11 .cse8)) (.cse0 (not .cse11))) (let ((.cse2 (= ~switchedOnBeforeTS~0 0)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse6 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse7 (not (<= |old(~waterLevel~0)| 1))) (.cse3 (and .cse0 .cse10)) (.cse9 (and (or (not (= |old(~waterLevel~0)| 1)) .cse4) (or .cse4 (= |old(~switchedOnBeforeTS~0)| 0))))) (and (or .cse0 (not (<= |old(~waterLevel~0)| 2)) (and .cse1 .cse2) (not (<= 2 |old(~waterLevel~0)|))) (or .cse3 .cse4 (not (= |old(~waterLevel~0)| 2)) (and .cse5 (= ~waterLevel~0 1) .cse6)) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse7 .cse0 (and .cse1 (= |timeShift_processEnvironment_~tmp~3#1| 0) .cse6 .cse2 .cse8)) (or (and .cse5 .cse1 .cse6 .cse8) .cse7 .cse3 (not (<= 0 |old(~waterLevel~0)|)) (< 0 |old(~waterLevel~0)|) .cse9) (or (and .cse5 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse6 .cse8) .cse7 .cse3 (not (<= 1 |old(~waterLevel~0)|)) .cse9)))))) [2022-11-03 03:51:10,180 INFO L895 garLoopResultBuilder]: At program point L951(line 951) the Hoare annotation is: (let ((.cse7 (= |old(~pumpRunning~0)| 0))) (let ((.cse5 (not .cse7)) (.cse8 (= 0 ~systemActive~0))) (let ((.cse4 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (and .cse5 .cse8)) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)))) (and (or .cse0 (and .cse1 .cse2) (not (= |old(~waterLevel~0)| 2))) (or .cse3 .cse4 .cse5 (and (= ~pumpRunning~0 0) .cse2)) (or .cse4 .cse0 (and .cse1 (or (not (= ~switchedOnBeforeTS~0 0)) (= ~waterLevel~0 1)) .cse2) (not (<= 0 |old(~waterLevel~0)|)) (let ((.cse6 (and .cse7 (not .cse8)))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse6) (or .cse6 (= |old(~switchedOnBeforeTS~0)| 0))))) (or .cse3 .cse5 (not (<= |old(~waterLevel~0)| 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))))) [2022-11-03 03:51:10,181 INFO L895 garLoopResultBuilder]: At program point L951-1(line 951) the Hoare annotation is: (let ((.cse12 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse10 (= ~pumpRunning~0 0)) (.cse2 (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__2_#t~ret50#1|)) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse9 (not .cse12)) (.cse13 (= 0 ~systemActive~0))) (let ((.cse7 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse8 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (and .cse9 .cse13)) (.cse5 (and .cse1 (or (not .cse10) .cse13) .cse2 .cse3)) (.cse6 (let ((.cse11 (and .cse12 (not .cse13)))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse11) (or .cse11 (= |old(~switchedOnBeforeTS~0)| 0)))))) (and (or .cse0 (and .cse1 .cse2 .cse3) .cse4 (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (<= 0 |old(~waterLevel~0)|)) (< 0 |old(~waterLevel~0)|) .cse5 .cse6) (or .cse7 .cse8 .cse9 (and .cse10 .cse2 .cse3)) (or .cse7 .cse9 .cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (or .cse8 .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse5 .cse6))))) [2022-11-03 03:51:10,181 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 529 555) the Hoare annotation is: (let ((.cse7 (= |old(~pumpRunning~0)| 0))) (let ((.cse5 (not .cse7)) (.cse8 (= 0 ~systemActive~0))) (let ((.cse4 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (and .cse5 .cse8)) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)))) (and (or .cse0 (and .cse1 .cse2) (not (= |old(~waterLevel~0)| 2))) (or .cse3 .cse4 .cse5 (and (= ~pumpRunning~0 0) .cse2)) (or .cse4 .cse0 (and .cse1 (or (not (= ~switchedOnBeforeTS~0 0)) (= ~waterLevel~0 1)) .cse2) (not (<= 0 |old(~waterLevel~0)|)) (let ((.cse6 (and .cse7 (not .cse8)))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse6) (or .cse6 (= |old(~switchedOnBeforeTS~0)| 0))))) (or .cse3 .cse5 (not (<= |old(~waterLevel~0)| 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))))) [2022-11-03 03:51:10,181 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 529 555) no Hoare annotation was computed. [2022-11-03 03:51:10,182 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 932) no Hoare annotation was computed. [2022-11-03 03:51:10,182 INFO L899 garLoopResultBuilder]: For program point L968(lines 968 978) no Hoare annotation was computed. [2022-11-03 03:51:10,182 INFO L899 garLoopResultBuilder]: For program point L964(lines 964 981) no Hoare annotation was computed. [2022-11-03 03:51:10,182 INFO L895 garLoopResultBuilder]: At program point L964-1(lines 956 984) the Hoare annotation is: (let ((.cse6 (= 0 ~systemActive~0))) (let ((.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse11 (< 0 |old(~waterLevel~0)|)) (.cse19 (= |old(~pumpRunning~0)| 0)) (.cse18 (not .cse6))) (let ((.cse5 (and .cse19 .cse18)) (.cse13 (not .cse19)) (.cse15 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse14 (= ~pumpRunning~0 0)) (.cse12 (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| |old(~pumpRunning~0)|)) (.cse1 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~8#1| ~waterLevel~0)) (.cse17 (or (and (not .cse11) .cse2) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse11))) (.cse7 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (let ((.cse4 (and .cse15 (not .cse14) .cse12 .cse1 .cse17 (= ~waterLevel~0 1) .cse7 .cse18)) (.cse0 (and .cse13 .cse6)) (.cse9 (and .cse15 .cse12 .cse1 (let ((.cse16 (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0))) (or (and .cse16 .cse2) (and (not .cse16) .cse17))) .cse7)) (.cse10 (and (or (not (= |old(~waterLevel~0)| 1)) .cse5) (or .cse5 (= |old(~switchedOnBeforeTS~0)| 0)))) (.cse3 (= ~switchedOnBeforeTS~0 0)) (.cse8 (not (<= |old(~waterLevel~0)| 1)))) (and (or .cse0 (and .cse1 .cse2 .cse3) .cse4 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 .cse4 .cse5 (not (= |old(~waterLevel~0)| 2)) (and .cse6 .cse7)) (or .cse8 .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse9 .cse10) (or .cse0 (not (<= 0 |old(~waterLevel~0)|)) .cse11 .cse9 .cse10) (or (and .cse12 .cse1 .cse2 (= |timeShift_processEnvironment_~tmp~3#1| 0) .cse7 .cse3) (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse8 .cse13 (and .cse14 .cse12 .cse1 .cse2 .cse6 .cse7))))))) [2022-11-03 03:51:10,183 INFO L895 garLoopResultBuilder]: At program point L783(lines 732 784) the Hoare annotation is: false [2022-11-03 03:51:10,183 INFO L895 garLoopResultBuilder]: At program point L771-2(lines 763 778) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 0)) (.cse5 (= 0 ~systemActive~0))) (let ((.cse1 (or (not .cse4) .cse5)) (.cse3 (or .cse4 (not .cse5))) (.cse0 (= |ULTIMATE.start_main_~tmp~7#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~waterLevel~0 1)) (and (not (= ~switchedOnBeforeTS~0 0)) .cse0 .cse1 .cse2 .cse3 (<= ~waterLevel~0 0) (<= 0 ~waterLevel~0)) (and .cse0 .cse1 (= 2 ~waterLevel~0) .cse2 .cse3) (and .cse0 .cse4 .cse2 (<= ~waterLevel~0 2) (= ~pumpRunning~0 ~switchedOnBeforeTS~0))))) [2022-11-03 03:51:10,183 INFO L899 garLoopResultBuilder]: For program point L734(lines 733 782) no Hoare annotation was computed. [2022-11-03 03:51:10,183 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-03 03:51:10,184 INFO L895 garLoopResultBuilder]: At program point L755(line 755) the Hoare annotation is: (let ((.cse7 (= ~pumpRunning~0 0)) (.cse8 (= ~switchedOnBeforeTS~0 0))) (let ((.cse0 (not .cse8)) (.cse2 (not .cse7)) (.cse6 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~7#1| 1)) (.cse5 (= 2 ~waterLevel~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (not (= 0 ~systemActive~0)))) (or (and .cse0 .cse1 .cse2 .cse3 (<= ~waterLevel~0 0) .cse4 (<= 0 ~waterLevel~0)) (and .cse1 .cse5 .cse3 .cse6 .cse4) (and .cse0 .cse1 .cse2 .cse3 (= ~waterLevel~0 1) .cse4) (and .cse1 .cse7 .cse3 (<= ~waterLevel~0 2) .cse6) (and .cse1 .cse5 .cse3 .cse8 .cse4)))) [2022-11-03 03:51:10,184 INFO L895 garLoopResultBuilder]: At program point L780(lines 733 782) the Hoare annotation is: (let ((.cse7 (= ~switchedOnBeforeTS~0 0))) (let ((.cse0 (not .cse7)) (.cse4 (not (= 0 ~systemActive~0))) (.cse6 (= 2 ~waterLevel~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~7#1| 1)) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (or (and .cse0 .cse1 (not .cse2) .cse3 (<= ~waterLevel~0 0) .cse4 (<= 0 ~waterLevel~0)) (and .cse0 .cse1 .cse3 (= ~waterLevel~0 1) .cse5 .cse4) (and .cse1 .cse6 .cse3 .cse7 .cse4) (and .cse1 .cse2 .cse6 .cse3 .cse7) (and .cse1 .cse2 (<= ~waterLevel~0 1) .cse3 .cse5)))) [2022-11-03 03:51:10,184 INFO L899 garLoopResultBuilder]: For program point L743(lines 743 749) no Hoare annotation was computed. [2022-11-03 03:51:10,184 INFO L899 garLoopResultBuilder]: For program point L743-1(lines 743 749) no Hoare annotation was computed. [2022-11-03 03:51:10,184 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 03:51:10,185 INFO L895 garLoopResultBuilder]: At program point L914(lines 914 921) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp~7#1| 1) (= ~waterLevel~0 1) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (= ~switchedOnBeforeTS~0 0) (not (= 0 ~systemActive~0))) [2022-11-03 03:51:10,185 INFO L902 garLoopResultBuilder]: At program point L786(lines 723 790) the Hoare annotation is: true [2022-11-03 03:51:10,185 INFO L899 garLoopResultBuilder]: For program point L753(lines 753 759) no Hoare annotation was computed. [2022-11-03 03:51:10,185 INFO L895 garLoopResultBuilder]: At program point L753-1(lines 753 759) the Hoare annotation is: (let ((.cse7 (= ~pumpRunning~0 0)) (.cse8 (= ~switchedOnBeforeTS~0 0))) (let ((.cse0 (not .cse8)) (.cse2 (not .cse7)) (.cse6 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~7#1| 1)) (.cse5 (= 2 ~waterLevel~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (not (= 0 ~systemActive~0)))) (or (and .cse0 .cse1 .cse2 .cse3 (<= ~waterLevel~0 0) .cse4 (<= 0 ~waterLevel~0)) (and .cse1 .cse5 .cse3 .cse6 .cse4) (and .cse0 .cse1 .cse2 .cse3 (= ~waterLevel~0 1) .cse4) (and .cse1 .cse7 .cse3 (<= ~waterLevel~0 2) .cse6) (and .cse1 .cse5 .cse3 .cse8 .cse4)))) [2022-11-03 03:51:10,185 INFO L902 garLoopResultBuilder]: At program point L914-2(lines 914 921) the Hoare annotation is: true [2022-11-03 03:51:10,186 INFO L895 garLoopResultBuilder]: At program point L745(line 745) the Hoare annotation is: (let ((.cse9 (= ~pumpRunning~0 0))) (let ((.cse2 (not .cse9)) (.cse8 (= ~switchedOnBeforeTS~0 0))) (let ((.cse0 (not .cse8)) (.cse4 (not (= 0 ~systemActive~0))) (.cse6 (= 2 ~waterLevel~0)) (.cse7 (or .cse2 .cse8)) (.cse1 (= |ULTIMATE.start_main_~tmp~7#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (or (and .cse0 .cse1 .cse2 .cse3 (<= ~waterLevel~0 0) .cse4 (<= 0 ~waterLevel~0)) (and .cse0 .cse1 .cse3 (= ~waterLevel~0 1) .cse5 .cse4) (and .cse1 .cse6 .cse7 .cse3 .cse8 .cse4) (and .cse1 .cse9 .cse6 .cse7 .cse3) (and .cse1 .cse9 (<= ~waterLevel~0 1) .cse3 .cse5))))) [2022-11-03 03:51:10,186 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 71 82) no Hoare annotation was computed. [2022-11-03 03:51:10,186 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 71 82) the Hoare annotation is: (let ((.cse1 (not (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (= 0 ~systemActive~0)) (.cse5 (= ~switchedOnBeforeTS~0 0))) (and (or (not .cse0) .cse1 .cse2 .cse3) (or (not (= |old(~waterLevel~0)| 1)) .cse1 .cse2 .cse4) (or (not .cse5) .cse2 .cse4 .cse3 (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (<= 0 |old(~waterLevel~0)|)) (< 0 |old(~waterLevel~0)|) .cse2 .cse4 .cse5))) [2022-11-03 03:51:10,186 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 634 642) no Hoare annotation was computed. [2022-11-03 03:51:10,187 INFO L902 garLoopResultBuilder]: At program point isPumpRunningENTRY(lines 634 642) the Hoare annotation is: true [2022-11-03 03:51:10,190 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:10,193 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:51:10,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:51:10 BoogieIcfgContainer [2022-11-03 03:51:10,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:51:10,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:51:10,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:51:10,238 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:51:10,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:42" (3/4) ... [2022-11-03 03:51:10,242 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 03:51:10,248 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-03 03:51:10,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-03 03:51:10,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-03 03:51:10,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-03 03:51:10,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-03 03:51:10,250 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2022-11-03 03:51:10,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 80 nodes and edges [2022-11-03 03:51:10,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-11-03 03:51:10,258 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-03 03:51:10,258 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-03 03:51:10,259 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 03:51:10,259 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 03:51:10,260 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 03:51:10,289 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) && 0 == systemActive) || ((pumpRunning == \old(pumpRunning) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || (((pumpRunning == \old(pumpRunning) && (!(pumpRunning == 0) || 0 == systemActive)) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || ((pumpRunning == 0 && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) <= 2)) || pumpRunning == switchedOnBeforeTS)) && ((((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(1 <= \old(waterLevel))) || (((pumpRunning == \old(pumpRunning) && (!(pumpRunning == 0) || 0 == systemActive)) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) [2022-11-03 03:51:10,290 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || (((\old(waterLevel) == waterLevel && tmp == 0) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || ((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && \old(waterLevel) == waterLevel + 1) && 0 < \old(waterLevel)) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && switchedOnBeforeTS == 0)) || !(2 <= \old(waterLevel)))) && (((((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && 0 < \old(waterLevel)) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || !(1 <= \old(waterLevel))) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || ((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && \old(waterLevel) == waterLevel + 1) && 0 < \old(waterLevel)) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || (pumpRunning == 0 && 0 == systemActive)) [2022-11-03 03:51:10,290 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(\old(pumpRunning) == 0) && 0 == systemActive) || ((tmp == waterLevel && \old(waterLevel) == waterLevel) && switchedOnBeforeTS == 0)) || (((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || (((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || (0 == systemActive && pumpRunning == switchedOnBeforeTS))) && ((((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(1 <= \old(waterLevel))) || ((((pumpRunning == \old(pumpRunning) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && ((tmp___0 == 0 && \old(waterLevel) == waterLevel) || (!(tmp___0 == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((((pumpRunning == \old(pumpRunning) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && ((tmp___0 == 0 && \old(waterLevel) == waterLevel) || (!(tmp___0 == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((((((tmp___0 == \old(pumpRunning) && tmp == waterLevel) && \old(waterLevel) == waterLevel) && tmp == 0) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0) || !(\old(switchedOnBeforeTS) == \old(pumpRunning))) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || (((((pumpRunning == 0 && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && \old(waterLevel) == waterLevel) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) [2022-11-03 03:51:10,290 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) && 0 == systemActive) || (((pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && pumpRunning == switchedOnBeforeTS) && (!(pumpRunning == 0) || 2 <= waterLevel))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || ((((\old(waterLevel) == waterLevel || ((!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1) && 0 < \old(waterLevel))) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0) && !(0 == systemActive)))) && ((((!(\old(pumpRunning) == 0) && 0 == systemActive) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && (\old(waterLevel) == waterLevel || ((!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1) && 0 < \old(waterLevel)))) && (waterLevel <= 0 || (pumpRunning == 0 && waterLevel <= 1))) && pumpRunning == switchedOnBeforeTS)) || !(1 <= \old(waterLevel))) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && (waterLevel <= 0 || (pumpRunning == 0 && waterLevel <= 1))) && pumpRunning == switchedOnBeforeTS) && 0 <= waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) [2022-11-03 03:51:10,291 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && ((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0))) && (((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(1 <= \old(waterLevel))) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) [2022-11-03 03:51:10,291 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && switchedOnBeforeTS == 0)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) && 0 == systemActive) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || ((pumpRunning == \old(pumpRunning) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || ((((\old(waterLevel) == waterLevel && tmp == 0) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0) && !(0 == systemActive)))) && ((((((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive)) || !(\old(waterLevel) <= 1)) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive)) || !(\old(waterLevel) <= 1)) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(1 <= \old(waterLevel))) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) [2022-11-03 03:51:10,292 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) && 0 == systemActive) || ((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0) && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) <= 2)) || (((((2 <= waterLevel || tmp == 0) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0) && !(0 == systemActive)))) && (((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(1 <= \old(waterLevel))) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) [2022-11-03 03:51:10,320 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:51:10,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:51:10,321 INFO L158 Benchmark]: Toolchain (without parser) took 209177.76ms. Allocated memory was 119.5MB in the beginning and 1.0GB in the end (delta: 903.9MB). Free memory was 83.7MB in the beginning and 735.5MB in the end (delta: -651.8MB). Peak memory consumption was 251.6MB. Max. memory is 16.1GB. [2022-11-03 03:51:10,321 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory is still 42.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:51:10,321 INFO L158 Benchmark]: CACSL2BoogieTranslator took 669.55ms. Allocated memory is still 119.5MB. Free memory was 83.7MB in the beginning and 83.9MB in the end (delta: -125.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 03:51:10,322 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.19ms. Allocated memory is still 119.5MB. Free memory was 83.9MB in the beginning and 81.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:51:10,322 INFO L158 Benchmark]: Boogie Preprocessor took 33.64ms. Allocated memory is still 119.5MB. Free memory was 81.4MB in the beginning and 79.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:51:10,323 INFO L158 Benchmark]: RCFGBuilder took 900.16ms. Allocated memory was 119.5MB in the beginning and 161.5MB in the end (delta: 41.9MB). Free memory was 79.7MB in the beginning and 127.5MB in the end (delta: -47.8MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2022-11-03 03:51:10,323 INFO L158 Benchmark]: TraceAbstraction took 207419.98ms. Allocated memory was 161.5MB in the beginning and 1.0GB in the end (delta: 861.9MB). Free memory was 127.1MB in the beginning and 740.7MB in the end (delta: -613.7MB). Peak memory consumption was 637.3MB. Max. memory is 16.1GB. [2022-11-03 03:51:10,323 INFO L158 Benchmark]: Witness Printer took 82.45ms. Allocated memory is still 1.0GB. Free memory was 740.7MB in the beginning and 735.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 03:51:10,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory is still 42.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 669.55ms. Allocated memory is still 119.5MB. Free memory was 83.7MB in the beginning and 83.9MB in the end (delta: -125.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.19ms. Allocated memory is still 119.5MB. Free memory was 83.9MB in the beginning and 81.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.64ms. Allocated memory is still 119.5MB. Free memory was 81.4MB in the beginning and 79.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 900.16ms. Allocated memory was 119.5MB in the beginning and 161.5MB in the end (delta: 41.9MB). Free memory was 79.7MB in the beginning and 127.5MB in the end (delta: -47.8MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * TraceAbstraction took 207419.98ms. Allocated memory was 161.5MB in the beginning and 1.0GB in the end (delta: 861.9MB). Free memory was 127.1MB in the beginning and 740.7MB in the end (delta: -613.7MB). Peak memory consumption was 637.3MB. Max. memory is 16.1GB. * Witness Printer took 82.45ms. Allocated memory is still 1.0GB. Free memory was 740.7MB in the beginning and 735.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 932]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 207.3s, OverallIterations: 12, TraceHistogramMax: 9, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 23.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 20.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3943 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3904 mSDsluCounter, 4347 SdHoareTripleChecker+Invalid, 7.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4540 mSDsCounter, 3094 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9226 IncrementalHoareTripleChecker+Invalid, 12320 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3094 mSolverCounterUnsat, 717 mSDtfsCounter, 9226 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2113 GetRequests, 1378 SyntacticMatches, 41 SemanticMatches, 694 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23458 ImplicationChecksByTransitivity, 78.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=9, InterpolantAutomatonStates: 397, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 908 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 1866 PreInvPairs, 2218 NumberOfFragments, 2915 HoareAnnotationTreeSize, 1866 FomulaSimplifications, 264441 FormulaSimplificationTreeSizeReduction, 8.3s HoareSimplificationTime, 31 FomulaSimplificationsInter, 252163 FormulaSimplificationTreeSizeReductionInter, 11.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 1166 NumberOfCodeBlocks, 1166 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1661 ConstructedInterpolants, 0 QuantifiedInterpolants, 7379 SizeOfPredicates, 102 NumberOfNonLiveVariables, 3567 ConjunctsInSsa, 256 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 1459/1930 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 543]: Loop Invariant Derived loop invariant: ((((((((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) && ((((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || (((\old(waterLevel) == waterLevel && tmp == 0) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || ((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && \old(waterLevel) == waterLevel + 1) && 0 < \old(waterLevel)) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && switchedOnBeforeTS == 0)) || !(2 <= \old(waterLevel)))) && (((((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && 0 < \old(waterLevel)) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || (((pumpRunning == 0 && \old(waterLevel) == waterLevel) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || !(1 <= \old(waterLevel))) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || ((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && \old(waterLevel) == waterLevel + 1) && 0 < \old(waterLevel)) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || (pumpRunning == 0 && 0 == systemActive)) - InvariantResult [Line: 572]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) && 0 == systemActive) || ((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0) && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) <= 2)) || (((((2 <= waterLevel || tmp == 0) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0) && !(0 == systemActive)))) && (((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(1 <= \old(waterLevel))) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) - InvariantResult [Line: 733]: Loop Invariant Derived loop invariant: (((((((((!(switchedOnBeforeTS == 0) && tmp == 1) && !(pumpRunning == 0)) && splverifierCounter == 0) && waterLevel <= 0) && !(0 == systemActive)) && 0 <= waterLevel) || (((((!(switchedOnBeforeTS == 0) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || ((((tmp == 1 && 2 == waterLevel) && splverifierCounter == 0) && switchedOnBeforeTS == 0) && !(0 == systemActive))) || ((((tmp == 1 && pumpRunning == 0) && 2 == waterLevel) && splverifierCounter == 0) && switchedOnBeforeTS == 0)) || ((((tmp == 1 && pumpRunning == 0) && waterLevel <= 1) && splverifierCounter == 0) && pumpRunning == switchedOnBeforeTS) - InvariantResult [Line: 753]: Loop Invariant Derived loop invariant: (((((((((!(switchedOnBeforeTS == 0) && tmp == 1) && !(pumpRunning == 0)) && splverifierCounter == 0) && waterLevel <= 0) && !(0 == systemActive)) && 0 <= waterLevel) || ((((tmp == 1 && 2 == waterLevel) && splverifierCounter == 0) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || (((((!(switchedOnBeforeTS == 0) && tmp == 1) && !(pumpRunning == 0)) && splverifierCounter == 0) && waterLevel == 1) && !(0 == systemActive))) || ((((tmp == 1 && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && pumpRunning == switchedOnBeforeTS)) || ((((tmp == 1 && 2 == waterLevel) && splverifierCounter == 0) && switchedOnBeforeTS == 0) && !(0 == systemActive)) - InvariantResult [Line: 831]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 568]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) && 0 == systemActive) || (((pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && pumpRunning == switchedOnBeforeTS) && (!(pumpRunning == 0) || 2 <= waterLevel))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || ((((\old(waterLevel) == waterLevel || ((!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1) && 0 < \old(waterLevel))) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0) && !(0 == systemActive)))) && ((((!(\old(pumpRunning) == 0) && 0 == systemActive) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && (\old(waterLevel) == waterLevel || ((!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1) && 0 < \old(waterLevel)))) && (waterLevel <= 0 || (pumpRunning == 0 && waterLevel <= 1))) && pumpRunning == switchedOnBeforeTS)) || !(1 <= \old(waterLevel))) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && (waterLevel <= 0 || (pumpRunning == 0 && waterLevel <= 1))) && pumpRunning == switchedOnBeforeTS) && 0 <= waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) - InvariantResult [Line: 564]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && switchedOnBeforeTS == 0)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) && 0 == systemActive) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || ((pumpRunning == \old(pumpRunning) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || ((((\old(waterLevel) == waterLevel && tmp == 0) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0) && !(0 == systemActive)))) && ((((((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive)) || !(\old(waterLevel) <= 1)) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel + 1) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive)) || !(\old(waterLevel) <= 1)) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(1 <= \old(waterLevel))) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) - InvariantResult [Line: 932]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && ((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0))) && (((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(1 <= \old(waterLevel))) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) - InvariantResult [Line: 732]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 914]: Loop Invariant Derived loop invariant: (((tmp == 1 && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0) && !(0 == systemActive) - InvariantResult [Line: 956]: Loop Invariant Derived loop invariant: ((((((((!(\old(pumpRunning) == 0) && 0 == systemActive) || ((tmp == waterLevel && \old(waterLevel) == waterLevel) && switchedOnBeforeTS == 0)) || (((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || (((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS) && !(0 == systemActive))) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2)) || (0 == systemActive && pumpRunning == switchedOnBeforeTS))) && ((((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(1 <= \old(waterLevel))) || ((((pumpRunning == \old(pumpRunning) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && ((tmp___0 == 0 && \old(waterLevel) == waterLevel) || (!(tmp___0 == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || ((((pumpRunning == \old(pumpRunning) && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && ((tmp___0 == 0 && \old(waterLevel) == waterLevel) || (!(tmp___0 == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && pumpRunning == switchedOnBeforeTS)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((((((((tmp___0 == \old(pumpRunning) && tmp == waterLevel) && \old(waterLevel) == waterLevel) && tmp == 0) && pumpRunning == switchedOnBeforeTS) && switchedOnBeforeTS == 0) || !(\old(switchedOnBeforeTS) == \old(pumpRunning))) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || (((((pumpRunning == 0 && tmp___0 == \old(pumpRunning)) && tmp == waterLevel) && \old(waterLevel) == waterLevel) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) - InvariantResult [Line: 951]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) && 0 == systemActive) || ((pumpRunning == \old(pumpRunning) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) && 0 == systemActive) || !(0 <= \old(waterLevel))) || 0 < \old(waterLevel)) || (((pumpRunning == \old(pumpRunning) && (!(pumpRunning == 0) || 0 == systemActive)) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0)))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || ((pumpRunning == 0 && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel))) && (((!(\old(switchedOnBeforeTS) == \old(pumpRunning)) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) <= 2)) || pumpRunning == switchedOnBeforeTS)) && ((((!(\old(waterLevel) <= 1) || (!(\old(pumpRunning) == 0) && 0 == systemActive)) || !(1 <= \old(waterLevel))) || (((pumpRunning == \old(pumpRunning) && (!(pumpRunning == 0) || 0 == systemActive)) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || ((!(\old(waterLevel) == 1) || (\old(pumpRunning) == 0 && !(0 == systemActive))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || \old(switchedOnBeforeTS) == 0))) - InvariantResult [Line: 841]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 723]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 914]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-03 03:51:10,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c66a62-b8b2-4276-9e41-81f61b736ae9/bin/utaipan-7li7fVZpFI/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