./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW --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 06101f936f6436bac89af152aefce31c84cfc20ba80a5adfcf1af02faa2d4f3b --- 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-4e7fbc6 [2022-11-23 15:38:06,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:38:06,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:38:06,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:38:06,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:38:06,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:38:06,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:38:06,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:38:06,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:38:06,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:38:06,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:38:06,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:38:06,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:38:06,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:38:06,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:38:06,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:38:06,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:38:06,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:38:06,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:38:06,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:38:06,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:38:06,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:38:06,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:38:06,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:38:06,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:38:06,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:38:06,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:38:06,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:38:06,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:38:06,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:38:06,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:38:06,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:38:06,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:38:06,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:38:06,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:38:06,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:38:06,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:38:06,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:38:06,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:38:06,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:38:06,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:38:06,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:38:06,208 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:38:06,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:38:06,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:38:06,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:38:06,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:38:06,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:38:06,210 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:38:06,210 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:38:06,210 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:38:06,211 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:38:06,212 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:38:06,212 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:38:06,212 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:38:06,212 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:38:06,213 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:38:06,213 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:38:06,213 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:38:06,213 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:38:06,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:38:06,214 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:38:06,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:38:06,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:38:06,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:38:06,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:38:06,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:38:06,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:38:06,216 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:38:06,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:38:06,216 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:38:06,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:38:06,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:38:06,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:38:06,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:38:06,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:38:06,218 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:38:06,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:38:06,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:38:06,219 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:38:06,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:38:06,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:38:06,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:38:06,219 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_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06101f936f6436bac89af152aefce31c84cfc20ba80a5adfcf1af02faa2d4f3b [2022-11-23 15:38:06,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:38:06,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:38:06,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:38:06,516 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:38:06,517 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:38:06,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c [2022-11-23 15:38:09,632 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:38:09,861 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:38:09,865 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c [2022-11-23 15:38:09,879 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/data/0587d7b5e/f58354f60abe4057b72848e6cde29cab/FLAG5d81a2c03 [2022-11-23 15:38:09,896 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/data/0587d7b5e/f58354f60abe4057b72848e6cde29cab [2022-11-23 15:38:09,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:38:09,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:38:09,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:38:09,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:38:09,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:38:09,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400e5d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:09, skipping insertion in model container [2022-11-23 15:38:09,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:38:09" (1/1) ... [2022-11-23 15:38:09,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:38:09,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:38:10,107 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c[2141,2154] [2022-11-23 15:38:10,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:38:10,221 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:38:10,243 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c[2141,2154] [2022-11-23 15:38:10,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:38:10,321 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:38:10,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10 WrapperNode [2022-11-23 15:38:10,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:38:10,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:38:10,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:38:10,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:38:10,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (1/1) ... [2022-11-23 15:38:10,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (1/1) ... [2022-11-23 15:38:10,368 INFO L138 Inliner]: procedures = 56, calls = 99, calls flagged for inlining = 25, calls inlined = 21, statements flattened = 182 [2022-11-23 15:38:10,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:38:10,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:38:10,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:38:10,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:38:10,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (1/1) ... [2022-11-23 15:38:10,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (1/1) ... [2022-11-23 15:38:10,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (1/1) ... [2022-11-23 15:38:10,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (1/1) ... [2022-11-23 15:38:10,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (1/1) ... [2022-11-23 15:38:10,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (1/1) ... [2022-11-23 15:38:10,407 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (1/1) ... [2022-11-23 15:38:10,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (1/1) ... [2022-11-23 15:38:10,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:38:10,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:38:10,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:38:10,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:38:10,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (1/1) ... [2022-11-23 15:38:10,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:38:10,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:38:10,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:38:10,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:38:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:38:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-23 15:38:10,501 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-23 15:38:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 15:38:10,501 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 15:38:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 15:38:10,501 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 15:38:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-23 15:38:10,502 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-23 15:38:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2022-11-23 15:38:10,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2022-11-23 15:38:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:38:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-23 15:38:10,503 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-23 15:38:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:38:10,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:38:10,576 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:38:10,578 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:38:10,811 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:38:11,028 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:38:11,028 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:38:11,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:38:11 BoogieIcfgContainer [2022-11-23 15:38:11,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:38:11,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:38:11,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:38:11,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:38:11,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:38:09" (1/3) ... [2022-11-23 15:38:11,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c18ad7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:38:11, skipping insertion in model container [2022-11-23 15:38:11,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:38:10" (2/3) ... [2022-11-23 15:38:11,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c18ad7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:38:11, skipping insertion in model container [2022-11-23 15:38:11,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:38:11" (3/3) ... [2022-11-23 15:38:11,072 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product36.cil.c [2022-11-23 15:38:11,090 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:38:11,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:38:11,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:38:11,149 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;@650b59dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:38:11,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:38:11,154 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) [2022-11-23 15:38:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 15:38:11,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:38:11,164 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] [2022-11-23 15:38:11,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:38:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:38:11,170 INFO L85 PathProgramCache]: Analyzing trace with hash -631509363, now seen corresponding path program 1 times [2022-11-23 15:38:11,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:38:11,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523639244] [2022-11-23 15:38:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:11,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:38:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:38:11,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:38:11,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523639244] [2022-11-23 15:38:11,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523639244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:38:11,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:38:11,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:38:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106380287] [2022-11-23 15:38:11,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:38:11,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:38:11,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:38:11,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:38:11,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:38:11,483 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) [2022-11-23 15:38:11,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:38:11,601 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-11-23 15:38:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:38:11,603 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 [2022-11-23 15:38:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:38:11,612 INFO L225 Difference]: With dead ends: 100 [2022-11-23 15:38:11,613 INFO L226 Difference]: Without dead ends: 46 [2022-11-23 15:38:11,616 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 [2022-11-23 15:38:11,619 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 [2022-11-23 15:38:11,620 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] [2022-11-23 15:38:11,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-23 15:38:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-23 15:38:11,657 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) [2022-11-23 15:38:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-11-23 15:38:11,661 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 21 [2022-11-23 15:38:11,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:38:11,661 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-11-23 15:38:11,662 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) [2022-11-23 15:38:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-11-23 15:38:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 15:38:11,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:38:11,664 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] [2022-11-23 15:38:11,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:38:11,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:38:11,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:38:11,666 INFO L85 PathProgramCache]: Analyzing trace with hash -896725322, now seen corresponding path program 1 times [2022-11-23 15:38:11,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:38:11,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711517381] [2022-11-23 15:38:11,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:11,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:38:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:38:11,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:38:11,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711517381] [2022-11-23 15:38:11,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711517381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:38:11,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:38:11,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:38:11,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138479760] [2022-11-23 15:38:11,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:38:11,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:38:11,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:38:11,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:38:11,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:38:11,842 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) [2022-11-23 15:38:11,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:38:11,910 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2022-11-23 15:38:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:38:11,913 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 [2022-11-23 15:38:11,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:38:11,915 INFO L225 Difference]: With dead ends: 69 [2022-11-23 15:38:11,916 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 15:38:11,917 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 [2022-11-23 15:38:11,918 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:38:11,919 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] [2022-11-23 15:38:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 15:38:11,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-23 15:38:11,925 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) [2022-11-23 15:38:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-23 15:38:11,928 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 22 [2022-11-23 15:38:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:38:11,929 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-23 15:38:11,929 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) [2022-11-23 15:38:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-23 15:38:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 15:38:11,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:38:11,931 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] [2022-11-23 15:38:11,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:38:11,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:38:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:38:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1526551836, now seen corresponding path program 1 times [2022-11-23 15:38:11,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:38:11,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107540245] [2022-11-23 15:38:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:11,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:38:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:38:12,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:38:12,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107540245] [2022-11-23 15:38:12,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107540245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:38:12,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:38:12,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:38:12,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604037249] [2022-11-23 15:38:12,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:38:12,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:38:12,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:38:12,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:38:12,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:38:12,228 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) [2022-11-23 15:38:12,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:38:12,616 INFO L93 Difference]: Finished difference Result 145 states and 181 transitions. [2022-11-23 15:38:12,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 15:38:12,617 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 [2022-11-23 15:38:12,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:38:12,619 INFO L225 Difference]: With dead ends: 145 [2022-11-23 15:38:12,619 INFO L226 Difference]: Without dead ends: 109 [2022-11-23 15:38:12,621 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 [2022-11-23 15:38:12,622 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 77 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:38:12,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 289 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:38:12,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-23 15:38:12,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 76. [2022-11-23 15:38:12,640 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) [2022-11-23 15:38:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2022-11-23 15:38:12,642 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 24 [2022-11-23 15:38:12,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:38:12,643 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2022-11-23 15:38:12,643 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) [2022-11-23 15:38:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2022-11-23 15:38:12,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 15:38:12,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:38:12,644 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] [2022-11-23 15:38:12,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:38:12,645 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:38:12,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:38:12,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1117676100, now seen corresponding path program 1 times [2022-11-23 15:38:12,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:38:12,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450579065] [2022-11-23 15:38:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:12,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:38:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:38:13,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:38:13,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450579065] [2022-11-23 15:38:13,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450579065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:38:13,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:38:13,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 15:38:13,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039505609] [2022-11-23 15:38:13,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:38:13,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:38:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:38:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:38:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:38:13,086 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:38:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:38:13,594 INFO L93 Difference]: Finished difference Result 267 states and 338 transitions. [2022-11-23 15:38:13,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 15:38:13,595 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-11-23 15:38:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:38:13,602 INFO L225 Difference]: With dead ends: 267 [2022-11-23 15:38:13,602 INFO L226 Difference]: Without dead ends: 193 [2022-11-23 15:38:13,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2022-11-23 15:38:13,609 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 141 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:38:13,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 315 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:38:13,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-23 15:38:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 129. [2022-11-23 15:38:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 95 states have internal predecessors, (107), 20 states have call successors, (20), 19 states have call predecessors, (20), 21 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2022-11-23 15:38:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2022-11-23 15:38:13,668 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 27 [2022-11-23 15:38:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:38:13,668 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2022-11-23 15:38:13,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:38:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2022-11-23 15:38:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 15:38:13,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:38:13,672 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] [2022-11-23 15:38:13,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:38:13,673 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:38:13,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:38:13,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1055167928, now seen corresponding path program 1 times [2022-11-23 15:38:13,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:38:13,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572500735] [2022-11-23 15:38:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:13,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:38:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:38:13,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:38:13,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572500735] [2022-11-23 15:38:13,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572500735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:38:13,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:38:13,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:38:13,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333034528] [2022-11-23 15:38:13,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:38:13,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:38:13,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:38:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:38:14,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:38:14,000 INFO L87 Difference]: Start difference. First operand 129 states and 151 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) [2022-11-23 15:38:14,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:38:14,426 INFO L93 Difference]: Finished difference Result 366 states and 438 transitions. [2022-11-23 15:38:14,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 15:38:14,428 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 [2022-11-23 15:38:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:38:14,435 INFO L225 Difference]: With dead ends: 366 [2022-11-23 15:38:14,435 INFO L226 Difference]: Without dead ends: 270 [2022-11-23 15:38:14,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:38:14,445 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 137 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:38:14,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 228 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:38:14,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-23 15:38:14,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 212. [2022-11-23 15:38:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 144 states have (on average 1.2291666666666667) internal successors, (177), 157 states have internal predecessors, (177), 33 states have call successors, (33), 30 states have call predecessors, (33), 34 states have return successors, (41), 33 states have call predecessors, (41), 33 states have call successors, (41) [2022-11-23 15:38:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 251 transitions. [2022-11-23 15:38:14,506 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 251 transitions. Word has length 30 [2022-11-23 15:38:14,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:38:14,507 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 251 transitions. [2022-11-23 15:38:14,507 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) [2022-11-23 15:38:14,507 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 251 transitions. [2022-11-23 15:38:14,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 15:38:14,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:38:14,514 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:38:14,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:38:14,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:38:14,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:38:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1641184103, now seen corresponding path program 1 times [2022-11-23 15:38:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:38:14,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019783809] [2022-11-23 15:38:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:14,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:38:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:38:14,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:38:14,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019783809] [2022-11-23 15:38:14,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019783809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:38:14,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334270149] [2022-11-23 15:38:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:14,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:38:14,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:38:14,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:38:14,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:38:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:15,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 15:38:15,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:38:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:38:15,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:38:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:38:15,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334270149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:38:15,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1981053855] [2022-11-23 15:38:15,835 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-23 15:38:15,836 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:38:15,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:38:15,846 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:38:15,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:38:18,432 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 52 for LOIs [2022-11-23 15:38:18,442 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 29 for LOIs [2022-11-23 15:38:18,735 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 37 for LOIs [2022-11-23 15:38:18,740 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:38:23,236 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2707#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (or (and (= ~head~0.offset 0) (= |timeShift_getWaterLevel_~retValue_acc~10#1| ~waterLevel~0) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (= |#NULL.offset| 0) (= 0 ~systemActive~0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2)) (= |timeShift_getWaterLevel_~retValue_acc~10#1| |timeShift_getWaterLevel_#res#1|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0)) (and (= ~head~0.offset 0) (= |timeShift_getWaterLevel_~retValue_acc~10#1| ~waterLevel~0) (= |old(~pumpRunning~0)| 0) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (= |#NULL.offset| 0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2)) (= |timeShift_getWaterLevel_~retValue_acc~10#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))) (<= ~methaneLevelCritical~0 0) (<= 0 ~head~0.base) (<= 0 ~methaneLevelCritical~0) (<= ~head~0.base 0) (<= 0 (+ |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2147483648)) (<= 0 (+ |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483648)) (<= |timeShift_getWaterLevel_~retValue_acc~10#1| 2147483647) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483647) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1))' at error location [2022-11-23 15:38:23,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:38:23,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:38:23,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 22 [2022-11-23 15:38:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251512748] [2022-11-23 15:38:23,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:38:23,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 15:38:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:38:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 15:38:23,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1880, Unknown=0, NotChecked=0, Total=2162 [2022-11-23 15:38:23,240 INFO L87 Difference]: Start difference. First operand 212 states and 251 transitions. Second operand has 22 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 8 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-23 15:38:25,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:38:25,706 INFO L93 Difference]: Finished difference Result 920 states and 1153 transitions. [2022-11-23 15:38:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-23 15:38:25,707 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 8 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) Word has length 47 [2022-11-23 15:38:25,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:38:25,711 INFO L225 Difference]: With dead ends: 920 [2022-11-23 15:38:25,711 INFO L226 Difference]: Without dead ends: 709 [2022-11-23 15:38:25,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=938, Invalid=6202, Unknown=0, NotChecked=0, Total=7140 [2022-11-23 15:38:25,716 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 653 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:38:25,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 552 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 15:38:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-11-23 15:38:25,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 566. [2022-11-23 15:38:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 376 states have (on average 1.199468085106383) internal successors, (451), 418 states have internal predecessors, (451), 92 states have call successors, (92), 88 states have call predecessors, (92), 97 states have return successors, (138), 90 states have call predecessors, (138), 92 states have call successors, (138) [2022-11-23 15:38:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 681 transitions. [2022-11-23 15:38:25,815 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 681 transitions. Word has length 47 [2022-11-23 15:38:25,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:38:25,815 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 681 transitions. [2022-11-23 15:38:25,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 8 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-23 15:38:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 681 transitions. [2022-11-23 15:38:25,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 15:38:25,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:38:25,818 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] [2022-11-23 15:38:25,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:38:26,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:38:26,025 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:38:26,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:38:26,025 INFO L85 PathProgramCache]: Analyzing trace with hash 119352699, now seen corresponding path program 1 times [2022-11-23 15:38:26,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:38:26,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479000415] [2022-11-23 15:38:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:26,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:38:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:38:26,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:38:26,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479000415] [2022-11-23 15:38:26,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479000415] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:38:26,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142207204] [2022-11-23 15:38:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:38:26,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:38:26,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:38:26,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:38:26,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:38:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:38:26,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-23 15:38:26,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:38:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 15:38:27,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:38:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:38:27,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142207204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:38:27,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1549497935] [2022-11-23 15:38:27,955 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-23 15:38:27,955 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:38:27,956 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:38:27,956 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:38:27,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:38:32,694 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 53 for LOIs [2022-11-23 15:38:32,712 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2022-11-23 15:38:33,143 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 23 for LOIs [2022-11-23 15:38:33,145 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:38:37,491 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5481#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (<= ~pumpRunning~0 1) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= |old(~pumpRunning~0)| 0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 1) (<= 0 (+ 2147483648 |timeShift_getWaterLevel_#res#1|)) (<= ~waterLevel~0 2147483647) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= 0 ~pumpRunning~0) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~10#1| 2147483648)) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 (+ |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2147483648)) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2147483647) (<= |timeShift_getWaterLevel_~retValue_acc~10#1| 2147483647) (<= 0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:38:37,491 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:38:37,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:38:37,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 13] total 37 [2022-11-23 15:38:37,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011920355] [2022-11-23 15:38:37,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:38:37,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-23 15:38:37,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:38:37,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-23 15:38:37,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=3269, Unknown=0, NotChecked=0, Total=3660 [2022-11-23 15:38:37,494 INFO L87 Difference]: Start difference. First operand 566 states and 681 transitions. Second operand has 37 states, 32 states have (on average 2.625) internal successors, (84), 31 states have internal predecessors, (84), 10 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-23 15:38:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:38:43,932 INFO L93 Difference]: Finished difference Result 2288 states and 2908 transitions. [2022-11-23 15:38:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-23 15:38:43,934 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 2.625) internal successors, (84), 31 states have internal predecessors, (84), 10 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) Word has length 52 [2022-11-23 15:38:43,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:38:43,935 INFO L225 Difference]: With dead ends: 2288 [2022-11-23 15:38:43,935 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:38:43,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 114 SyntacticMatches, 9 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8511 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3039, Invalid=21141, Unknown=0, NotChecked=0, Total=24180 [2022-11-23 15:38:43,948 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1058 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 753 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:38:43,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1055 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [753 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 15:38:43,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:38:43,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:38:43,949 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) [2022-11-23 15:38:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:38:43,949 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2022-11-23 15:38:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:38:43,950 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:38:43,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 2.625) internal successors, (84), 31 states have internal predecessors, (84), 10 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-23 15:38:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:38:43,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:38:43,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:38:43,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:38:44,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:38:44,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:38:57,984 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 140 146) no Hoare annotation was computed. [2022-11-23 15:38:57,984 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 140 146) the Hoare annotation is: true [2022-11-23 15:38:57,984 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 900 911) the Hoare annotation is: true [2022-11-23 15:38:57,985 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 900 911) no Hoare annotation was computed. [2022-11-23 15:38:57,985 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 727 756) no Hoare annotation was computed. [2022-11-23 15:38:57,985 INFO L902 garLoopResultBuilder]: At program point L737-2(lines 737 751) the Hoare annotation is: true [2022-11-23 15:38:57,985 INFO L902 garLoopResultBuilder]: At program point L733(line 733) the Hoare annotation is: true [2022-11-23 15:38:57,985 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 727 756) the Hoare annotation is: true [2022-11-23 15:38:57,985 INFO L899 garLoopResultBuilder]: For program point L733-1(line 733) no Hoare annotation was computed. [2022-11-23 15:38:57,985 INFO L902 garLoopResultBuilder]: At program point L752(lines 727 756) the Hoare annotation is: true [2022-11-23 15:38:57,985 INFO L899 garLoopResultBuilder]: For program point L748(line 748) no Hoare annotation was computed. [2022-11-23 15:38:57,986 INFO L899 garLoopResultBuilder]: For program point L741(lines 741 745) no Hoare annotation was computed. [2022-11-23 15:38:57,986 INFO L902 garLoopResultBuilder]: At program point L741-1(lines 741 745) the Hoare annotation is: true [2022-11-23 15:38:57,986 INFO L899 garLoopResultBuilder]: For program point L857(lines 857 863) no Hoare annotation was computed. [2022-11-23 15:38:57,986 INFO L895 garLoopResultBuilder]: At program point L127-1(lines 127 133) the Hoare annotation is: (let ((.cse9 (= ~pumpRunning~0 0))) (let ((.cse3 (not .cse9)) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0)) (.cse4 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (and (or (not .cse0) (and (= 2 ~waterLevel~0) .cse1 .cse2) (and .cse3 (= |timeShift_processEnvironment_~tmp~0#1| 1) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))) (let ((.cse5 (not (< 0 ~waterLevel~0))) (.cse6 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (let ((.cse7 (or (not (= |old(~waterLevel~0)| 1)) (<= 1 ~waterLevel~0))) (.cse8 (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and .cse5 .cse6) (and .cse9 .cse6)))) (or (not (<= |old(~waterLevel~0)| 1)) (and .cse4 .cse3 .cse5 .cse6 .cse2) (and .cse4 .cse7 .cse8 .cse1 .cse2) (and .cse4 (= |timeShift_processEnvironment_~tmp~0#1| 0) .cse7 .cse8 .cse2)))) (or (and .cse4 .cse9) (and .cse0 (not .cse1)) (not (<= |old(~waterLevel~0)| 2)) (and .cse4 (= ~waterLevel~0 1) .cse2) (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-23 15:38:57,987 INFO L895 garLoopResultBuilder]: At program point L156(lines 156 164) the Hoare annotation is: (let ((.cse0 (not (< |old(~waterLevel~0)| 3)))) (and (or (= |old(~waterLevel~0)| ~waterLevel~0) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (= 0 ~systemActive~0)) .cse0) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (not (= |old(~waterLevel~0)| 1)) (<= 1 ~waterLevel~0)) (= ~pumpRunning~0 0) (let ((.cse1 (< ~waterLevel~0 2))) (or (and (= |timeShift_processEnvironment_~tmp~0#1| 0) .cse1) (and (not .cse1) (= |timeShift_processEnvironment_~tmp~0#1| 1)))) (<= ~waterLevel~0 |old(~waterLevel~0)|) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse0))) [2022-11-23 15:38:57,987 INFO L895 garLoopResultBuilder]: At program point L152(lines 152 169) the Hoare annotation is: (let ((.cse6 (= |old(~pumpRunning~0)| 0)) (.cse1 (= ~pumpRunning~0 0))) (let ((.cse0 (let ((.cse7 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and (not (< 0 ~waterLevel~0)) .cse7) (and .cse1 .cse7)))) (.cse2 (and .cse6 (not (= 0 ~systemActive~0)))) (.cse4 (not .cse6)) (.cse5 (not (<= 2 |old(~waterLevel~0)|))) (.cse3 (not (< |old(~waterLevel~0)| 3)))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not .cse1)) .cse2 .cse3) (or (not (<= |old(~waterLevel~0)| 1)) .cse4 (and (or (not (= |old(~waterLevel~0)| 1)) (<= 1 ~waterLevel~0)) .cse0 .cse1)) (or .cse2 (= ~waterLevel~0 1) (not (<= |old(~waterLevel~0)| 2)) .cse5) (or .cse4 (= |old(~waterLevel~0)| ~waterLevel~0) .cse3 .cse5) (or (and (or .cse1 (< ~waterLevel~0 2)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse3)))) [2022-11-23 15:38:57,988 INFO L895 garLoopResultBuilder]: At program point L854(line 854) the Hoare annotation is: (let ((.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (= ~waterLevel~0 1))) (and (let ((.cse2 (not (< 0 ~waterLevel~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse3 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (let ((.cse0 (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and .cse2 .cse3) (and .cse1 .cse3)))) (or (not (<= |old(~waterLevel~0)| 1)) (and .cse0 (= 0 ~systemActive~0)) (and (= |timeShift_processEnvironment_~tmp~0#1| 0) .cse0) (and (not .cse1) .cse2 .cse3)))) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| ~waterLevel~0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (not (< |old(~waterLevel~0)| 3))) (or .cse4 (not (= |old(~waterLevel~0)| 2))) (or .cse5 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse4 (not (= |old(~waterLevel~0)| 1)) .cse5))) [2022-11-23 15:38:57,988 INFO L899 garLoopResultBuilder]: For program point L854-1(line 854) no Hoare annotation was computed. [2022-11-23 15:38:57,988 INFO L899 garLoopResultBuilder]: For program point L120-2(lines 116 138) no Hoare annotation was computed. [2022-11-23 15:38:57,988 INFO L895 garLoopResultBuilder]: At program point L839(line 839) the Hoare annotation is: (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (< |old(~waterLevel~0)| 3))) [2022-11-23 15:38:57,988 INFO L895 garLoopResultBuilder]: At program point L839-1(line 839) the Hoare annotation is: (or (and (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__2_#t~ret44#1|) (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (<= |old(~waterLevel~0)| 2))) [2022-11-23 15:38:57,989 INFO L895 garLoopResultBuilder]: At program point L162(line 162) the Hoare annotation is: (let ((.cse0 (not (< |old(~waterLevel~0)| 3)))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |timeShift_processEnvironment_~tmp~0#1| 0) (= ~pumpRunning~0 0) (<= ~waterLevel~0 |old(~waterLevel~0)|) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse0) (or (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)) (not (= |old(~waterLevel~0)| 2)) (or (not (= 0 ~systemActive~0)) .cse0))) [2022-11-23 15:38:57,989 INFO L895 garLoopResultBuilder]: At program point L92(line 92) the Hoare annotation is: (not (< |old(~waterLevel~0)| 3)) [2022-11-23 15:38:57,989 INFO L899 garLoopResultBuilder]: For program point L856(lines 856 866) no Hoare annotation was computed. [2022-11-23 15:38:57,989 INFO L899 garLoopResultBuilder]: For program point L852(lines 852 869) no Hoare annotation was computed. [2022-11-23 15:38:57,990 INFO L895 garLoopResultBuilder]: At program point L852-1(lines 844 872) the Hoare annotation is: (let ((.cse16 (= |old(~pumpRunning~0)| 0))) (let ((.cse8 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse4 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| ~waterLevel~0)) (.cse14 (= 0 ~systemActive~0)) (.cse10 (not (< 0 ~waterLevel~0))) (.cse3 (= ~pumpRunning~0 0)) (.cse6 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse0 (not .cse16)) (.cse15 (not (< |old(~waterLevel~0)| 3)))) (let ((.cse1 (and (or .cse0 .cse15) (not (< |old(~waterLevel~0)| 2)))) (.cse2 (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and .cse10 .cse6) (and .cse3 .cse6))) (.cse5 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2)) (.cse7 (and .cse8 .cse3 .cse4 (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) .cse6 .cse14)) (.cse12 (and .cse16 (not .cse14))) (.cse11 (not (= |old(~waterLevel~0)| 1))) (.cse13 (= ~waterLevel~0 1)) (.cse9 (not .cse3))) (and (or .cse0 .cse1 (and .cse2 (<= |timeShift_processEnvironment_~tmp~0#1| 0) .cse3 .cse4 (< 0 (+ |timeShift_processEnvironment_~tmp~0#1| 1))) (and .cse5 .cse4 .cse6) .cse7) (or (and .cse8 .cse9 .cse10 (or (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) .cse11) .cse4 .cse6) .cse1 .cse12 (and .cse2 .cse5 .cse4) .cse7) (or (and .cse8 .cse4 .cse13) (and .cse8 .cse3) .cse12 (not (= |old(~waterLevel~0)| 2))) (or .cse0 .cse11 .cse13) (or .cse0 (and (= |old(~waterLevel~0)| ~waterLevel~0) .cse14) (and .cse9 (= |timeShift_processEnvironment_~tmp~0#1| 1)) .cse15 (not (<= 2 |old(~waterLevel~0)|))))))) [2022-11-23 15:38:57,990 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 113 139) the Hoare annotation is: (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (< |old(~waterLevel~0)| 3))) [2022-11-23 15:38:57,990 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 113 139) no Hoare annotation was computed. [2022-11-23 15:38:57,990 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 92) no Hoare annotation was computed. [2022-11-23 15:38:57,990 INFO L895 garLoopResultBuilder]: At program point L167(line 167) the Hoare annotation is: (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and (not (< 0 ~waterLevel~0)) (<= ~waterLevel~0 |old(~waterLevel~0)|))) (not (= ~pumpRunning~0 0)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (not (< |old(~waterLevel~0)| 3))) (or (= ~waterLevel~0 1) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|)))) [2022-11-23 15:38:57,991 INFO L895 garLoopResultBuilder]: At program point L167-1(lines 148 172) the Hoare annotation is: (let ((.cse10 (= |old(~pumpRunning~0)| 0)) (.cse9 (= ~pumpRunning~0 0))) (let ((.cse1 (not .cse9)) (.cse7 (and .cse10 (not (= 0 ~systemActive~0)))) (.cse2 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (not (<= 2 |old(~waterLevel~0)|))) (.cse5 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse6 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse0 (not .cse10)) (.cse8 (= ~waterLevel~0 1))) (and (or .cse0 (and .cse1 (= |timeShift_processEnvironment_~tmp~0#1| 1) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse2 .cse3) (or (not (<= |old(~waterLevel~0)| 1)) (and .cse4 .cse1 (not (< 0 ~waterLevel~0)) .cse5 .cse6) .cse7) (or .cse7 .cse2 (and .cse4 .cse8 .cse6) .cse3) (or .cse0 (and (= |timeShift_processEnvironment_~tmp~0#1| 0) .cse9 .cse5 .cse6) (not (< |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse8)))) [2022-11-23 15:38:57,991 INFO L895 garLoopResultBuilder]: At program point L717(lines 666 718) the Hoare annotation is: false [2022-11-23 15:38:57,991 INFO L895 garLoopResultBuilder]: At program point L705-2(lines 697 712) the Hoare annotation is: (and (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (< ~waterLevel~0 3)) [2022-11-23 15:38:57,991 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-23 15:38:57,991 INFO L899 garLoopResultBuilder]: For program point L668(lines 667 716) no Hoare annotation was computed. [2022-11-23 15:38:57,992 INFO L895 garLoopResultBuilder]: At program point L689(line 689) the Hoare annotation is: (and (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (< ~waterLevel~0 3)) [2022-11-23 15:38:57,992 INFO L895 garLoopResultBuilder]: At program point L714(lines 667 716) the Hoare annotation is: (let ((.cse1 (= 2 ~waterLevel~0)) (.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= ~waterLevel~0 1) .cse0) (and .cse1 .cse0 (= 0 ~systemActive~0)) (and (not (= ~pumpRunning~0 0)) .cse1 .cse0))) [2022-11-23 15:38:57,992 INFO L899 garLoopResultBuilder]: For program point L677(lines 677 683) no Hoare annotation was computed. [2022-11-23 15:38:57,992 INFO L899 garLoopResultBuilder]: For program point L677-1(lines 677 683) no Hoare annotation was computed. [2022-11-23 15:38:57,992 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:38:57,992 INFO L895 garLoopResultBuilder]: At program point L810(lines 810 817) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp~6#1| 1) (= ~pumpRunning~0 0) (= ~waterLevel~0 1) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) [2022-11-23 15:38:57,993 INFO L902 garLoopResultBuilder]: At program point L810-2(lines 810 817) the Hoare annotation is: true [2022-11-23 15:38:57,993 INFO L902 garLoopResultBuilder]: At program point L720(lines 657 724) the Hoare annotation is: true [2022-11-23 15:38:57,993 INFO L899 garLoopResultBuilder]: For program point L687(lines 687 693) no Hoare annotation was computed. [2022-11-23 15:38:57,993 INFO L895 garLoopResultBuilder]: At program point L687-1(lines 687 693) the Hoare annotation is: (and (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (< ~waterLevel~0 3)) [2022-11-23 15:38:57,993 INFO L895 garLoopResultBuilder]: At program point L679(line 679) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= ~waterLevel~0 1) .cse0) (and .cse0 (= 0 ~systemActive~0) (< ~waterLevel~0 3)) (and (not (= ~pumpRunning~0 0)) (= 2 ~waterLevel~0) .cse0))) [2022-11-23 15:38:57,993 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 888 899) no Hoare annotation was computed. [2022-11-23 15:38:57,994 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 888 899) the Hoare annotation is: (let ((.cse0 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (= ~pumpRunning~0 0) .cse0 (not (<= |old(~waterLevel~0)| 2))) (or .cse0 (not (= 0 ~systemActive~0)) (not (< |old(~waterLevel~0)| 3))) (or (not (<= |old(~waterLevel~0)| 1)) .cse0))) [2022-11-23 15:38:57,994 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 200 208) no Hoare annotation was computed. [2022-11-23 15:38:57,994 INFO L902 garLoopResultBuilder]: At program point isPumpRunningENTRY(lines 200 208) the Hoare annotation is: true [2022-11-23 15:38:57,997 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:38:57,999 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:38:58,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:38:58 BoogieIcfgContainer [2022-11-23 15:38:58,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:38:58,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:38:58,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:38:58,027 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:38:58,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:38:11" (3/4) ... [2022-11-23 15:38:58,030 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:38:58,036 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-23 15:38:58,036 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-23 15:38:58,036 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-23 15:38:58,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-23 15:38:58,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-23 15:38:58,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2022-11-23 15:38:58,043 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2022-11-23 15:38:58,044 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-23 15:38:58,044 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 15:38:58,045 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:38:58,045 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:38:58,071 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((pumpRunning == aux-isPumpRunning()-aux && pumpRunning == \old(pumpRunning)) && \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2) [2022-11-23 15:38:58,072 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || ((2 == waterLevel && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || ((!(pumpRunning == 0) && tmp == 1) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) && (((!(\old(waterLevel) <= 1) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && !(0 < waterLevel)) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || ((((pumpRunning == \old(pumpRunning) && (!(\old(waterLevel) == 1) || 1 <= waterLevel)) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || ((((pumpRunning == \old(pumpRunning) && tmp == 0) && (!(\old(waterLevel) == 1) || 1 <= waterLevel)) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS))) && (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || ((pumpRunning == \old(pumpRunning) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel))) [2022-11-23 15:38:58,072 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 3)) && !(\old(waterLevel) < 2))) || ((((((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel))) && tmp <= 0) && pumpRunning == 0) && tmp == waterLevel) && 0 < tmp + 1)) || ((tmp == 2 && tmp == waterLevel) && waterLevel <= \old(waterLevel))) || (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == waterLevel) && pumpRunning == tmp___0) && waterLevel <= \old(waterLevel)) && 0 == systemActive)) && (((((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && !(0 < waterLevel)) && (!(tmp___0 == 0) || !(\old(waterLevel) == 1))) && tmp == waterLevel) && waterLevel <= \old(waterLevel)) || ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 3)) && !(\old(waterLevel) < 2))) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || ((((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel))) && tmp == 2) && tmp == waterLevel)) || (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == waterLevel) && pumpRunning == tmp___0) && waterLevel <= \old(waterLevel)) && 0 == systemActive))) && (((((pumpRunning == \old(pumpRunning) && tmp == waterLevel) && waterLevel == 1) || (pumpRunning == \old(pumpRunning) && pumpRunning == 0)) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || waterLevel == 1)) && ((((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && 0 == systemActive)) || (!(pumpRunning == 0) && tmp == 1)) || !(\old(waterLevel) < 3)) || !(2 <= \old(waterLevel))) [2022-11-23 15:38:58,073 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((pumpRunning == \old(pumpRunning) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && !(pumpRunning == 0)) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) < 3)) && ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (((!(\old(waterLevel) == 1) || 1 <= waterLevel) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && pumpRunning == 0))) && ((((\old(pumpRunning) == 0 && !(0 == systemActive)) || waterLevel == 1) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) < 3)) || !(2 <= \old(waterLevel)))) && (((pumpRunning == 0 || waterLevel < 2) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) < 3)) [2022-11-23 15:38:58,073 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(waterLevel) < 3) [2022-11-23 15:38:58,073 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || ((!(pumpRunning == 0) && tmp == 1) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(waterLevel) <= 1) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && !(0 < waterLevel)) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || (\old(pumpRunning) == 0 && !(0 == systemActive)))) && ((((\old(pumpRunning) == 0 && !(0 == systemActive)) || !(\old(waterLevel) <= 2)) || ((pumpRunning == \old(pumpRunning) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel)))) && ((!(\old(pumpRunning) == 0) || (((tmp == 0 && pumpRunning == 0) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 2))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || waterLevel == 1) [2022-11-23 15:38:58,074 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(waterLevel) == waterLevel || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (!(0 == systemActive) || !(\old(waterLevel) < 3))) && ((((((pumpRunning == \old(pumpRunning) && (!(\old(waterLevel) == 1) || 1 <= waterLevel)) && pumpRunning == 0) && ((tmp == 0 && waterLevel < 2) || (!(waterLevel < 2) && tmp == 1))) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) < 3)) [2022-11-23 15:38:58,093 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:38:58,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:38:58,094 INFO L158 Benchmark]: Toolchain (without parser) took 48193.77ms. Allocated memory was 176.2MB in the beginning and 820.0MB in the end (delta: 643.8MB). Free memory was 130.8MB in the beginning and 664.0MB in the end (delta: -533.3MB). Peak memory consumption was 112.8MB. Max. memory is 16.1GB. [2022-11-23 15:38:58,094 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 134.2MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:38:58,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.25ms. Allocated memory is still 176.2MB. Free memory was 130.8MB in the beginning and 111.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 15:38:58,095 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.47ms. Allocated memory is still 176.2MB. Free memory was 111.9MB in the beginning and 109.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:38:58,095 INFO L158 Benchmark]: Boogie Preprocessor took 44.11ms. Allocated memory is still 176.2MB. Free memory was 109.7MB in the beginning and 108.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:38:58,095 INFO L158 Benchmark]: RCFGBuilder took 618.20ms. Allocated memory is still 176.2MB. Free memory was 108.3MB in the beginning and 84.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-23 15:38:58,096 INFO L158 Benchmark]: TraceAbstraction took 46979.68ms. Allocated memory was 176.2MB in the beginning and 820.0MB in the end (delta: 643.8MB). Free memory was 83.7MB in the beginning and 669.3MB in the end (delta: -585.6MB). Peak memory consumption was 446.2MB. Max. memory is 16.1GB. [2022-11-23 15:38:58,096 INFO L158 Benchmark]: Witness Printer took 67.24ms. Allocated memory is still 820.0MB. Free memory was 669.3MB in the beginning and 664.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 15:38:58,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 134.2MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 420.25ms. Allocated memory is still 176.2MB. Free memory was 130.8MB in the beginning and 111.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.47ms. Allocated memory is still 176.2MB. Free memory was 111.9MB in the beginning and 109.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.11ms. Allocated memory is still 176.2MB. Free memory was 109.7MB in the beginning and 108.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.20ms. Allocated memory is still 176.2MB. Free memory was 108.3MB in the beginning and 84.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 46979.68ms. Allocated memory was 176.2MB in the beginning and 820.0MB in the end (delta: 643.8MB). Free memory was 83.7MB in the beginning and 669.3MB in the end (delta: -585.6MB). Peak memory consumption was 446.2MB. Max. memory is 16.1GB. * Witness Printer took 67.24ms. Allocated memory is still 820.0MB. Free memory was 669.3MB in the beginning and 664.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 92]: 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: 46.9s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 13.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2100 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2073 mSDsluCounter, 2549 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2090 mSDsCounter, 1447 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4341 IncrementalHoareTripleChecker+Invalid, 5788 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1447 mSolverCounterUnsat, 459 mSDtfsCounter, 4341 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 554 GetRequests, 256 SyntacticMatches, 10 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11023 ImplicationChecksByTransitivity, 15.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=566occurred in iteration=6, InterpolantAutomatonStates: 206, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 298 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 1572 PreInvPairs, 2471 NumberOfFragments, 1117 HoareAnnotationTreeSize, 1572 FomulaSimplifications, 71914 FormulaSimplificationTreeSizeReduction, 5.6s HoareSimplificationTime, 31 FomulaSimplificationsInter, 92142 FormulaSimplificationTreeSizeReductionInter, 8.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 322 NumberOfCodeBlocks, 322 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 1877 SizeOfPredicates, 33 NumberOfNonLiveVariables, 540 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 111/151 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: 810]: Loop Invariant Derived loop invariant: ((tmp == 1 && pumpRunning == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS - InvariantResult [Line: 666]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 810]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || ((!(pumpRunning == 0) && tmp == 1) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(waterLevel) <= 1) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && !(0 < waterLevel)) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || (\old(pumpRunning) == 0 && !(0 == systemActive)))) && ((((\old(pumpRunning) == 0 && !(0 == systemActive)) || !(\old(waterLevel) <= 2)) || ((pumpRunning == \old(pumpRunning) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel)))) && ((!(\old(pumpRunning) == 0) || (((tmp == 0 && pumpRunning == 0) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) < 2))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || waterLevel == 1) - InvariantResult [Line: 667]: Loop Invariant Derived loop invariant: ((waterLevel <= 1 && splverifierCounter == 0) || ((2 == waterLevel && splverifierCounter == 0) && 0 == systemActive)) || ((!(pumpRunning == 0) && 2 == waterLevel) && splverifierCounter == 0) - InvariantResult [Line: 737]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 844]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 3)) && !(\old(waterLevel) < 2))) || ((((((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel))) && tmp <= 0) && pumpRunning == 0) && tmp == waterLevel) && 0 < tmp + 1)) || ((tmp == 2 && tmp == waterLevel) && waterLevel <= \old(waterLevel))) || (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == waterLevel) && pumpRunning == tmp___0) && waterLevel <= \old(waterLevel)) && 0 == systemActive)) && (((((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && !(0 < waterLevel)) && (!(tmp___0 == 0) || !(\old(waterLevel) == 1))) && tmp == waterLevel) && waterLevel <= \old(waterLevel)) || ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 3)) && !(\old(waterLevel) < 2))) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || ((((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel))) && tmp == 2) && tmp == waterLevel)) || (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && tmp == waterLevel) && pumpRunning == tmp___0) && waterLevel <= \old(waterLevel)) && 0 == systemActive))) && (((((pumpRunning == \old(pumpRunning) && tmp == waterLevel) && waterLevel == 1) || (pumpRunning == \old(pumpRunning) && pumpRunning == 0)) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || waterLevel == 1)) && ((((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && 0 == systemActive)) || (!(pumpRunning == 0) && tmp == 1)) || !(\old(waterLevel) < 3)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 156]: Loop Invariant Derived loop invariant: (((\old(waterLevel) == waterLevel || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (!(0 == systemActive) || !(\old(waterLevel) < 3))) && ((((((pumpRunning == \old(pumpRunning) && (!(\old(waterLevel) == 1) || 1 <= waterLevel)) && pumpRunning == 0) && ((tmp == 0 && waterLevel < 2) || (!(waterLevel < 2) && tmp == 1))) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) < 3)) - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: (((((((pumpRunning == \old(pumpRunning) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && !(pumpRunning == 0)) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) < 3)) && ((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (((!(\old(waterLevel) == 1) || 1 <= waterLevel) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && pumpRunning == 0))) && ((((\old(pumpRunning) == 0 && !(0 == systemActive)) || waterLevel == 1) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) < 3)) || !(2 <= \old(waterLevel)))) && (((pumpRunning == 0 || waterLevel < 2) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) < 3)) - InvariantResult [Line: 839]: Loop Invariant Derived loop invariant: ((pumpRunning == aux-isPumpRunning()-aux && pumpRunning == \old(pumpRunning)) && \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2) - InvariantResult [Line: 657]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 727]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 92]: Loop Invariant Derived loop invariant: !(\old(waterLevel) < 3) - InvariantResult [Line: 687]: Loop Invariant Derived loop invariant: splverifierCounter == 0 && waterLevel < 3 - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || ((2 == waterLevel && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || ((!(pumpRunning == 0) && tmp == 1) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) && (((!(\old(waterLevel) <= 1) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && !(0 < waterLevel)) && waterLevel <= \old(waterLevel)) && pumpRunning == switchedOnBeforeTS)) || ((((pumpRunning == \old(pumpRunning) && (!(\old(waterLevel) == 1) || 1 <= waterLevel)) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && 0 == systemActive) && pumpRunning == switchedOnBeforeTS)) || ((((pumpRunning == \old(pumpRunning) && tmp == 0) && (!(\old(waterLevel) == 1) || 1 <= waterLevel)) && ((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && pumpRunning == switchedOnBeforeTS))) && (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || ((pumpRunning == \old(pumpRunning) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS)) || !(2 <= \old(waterLevel))) RESULT: Ultimate proved your program to be correct! [2022-11-23 15:38:58,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a6d52bb-6aa9-4eaa-845d-d69ce0894ade/bin/utaipan-Q6hlc19bkW/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