./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45558e1c10008e5b16efe572a84fcf92b08797f54d586c51d45827b7e38254a6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:53:15,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:53:15,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:53:15,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:53:15,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:53:15,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:53:15,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:53:15,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:53:15,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:53:15,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:53:15,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:53:15,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:53:15,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:53:15,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:53:15,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:53:15,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:53:15,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:53:15,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:53:15,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:53:15,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:53:15,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:53:15,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:53:15,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:53:15,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:53:15,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:53:15,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:53:15,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:53:15,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:53:15,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:53:15,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:53:15,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:53:15,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:53:15,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:53:15,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:53:15,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:53:15,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:53:15,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:53:15,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:53:15,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:53:15,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:53:15,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:53:15,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:53:15,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:53:15,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:53:15,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:53:15,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:53:15,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:53:15,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:53:15,232 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:53:15,232 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:53:15,232 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:53:15,232 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:53:15,232 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:53:15,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:53:15,233 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:53:15,233 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:53:15,233 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:53:15,233 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:53:15,233 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:53:15,233 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:53:15,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:53:15,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:53:15,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:53:15,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:53:15,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:53:15,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:53:15,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:53:15,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:53:15,239 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:53:15,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:53:15,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:53:15,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:53:15,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:53:15,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:53:15,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:53:15,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:53:15,241 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:53:15,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:53:15,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:53:15,242 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:53:15,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:53:15,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:53:15,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:53:15,244 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_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45558e1c10008e5b16efe572a84fcf92b08797f54d586c51d45827b7e38254a6 [2022-11-03 02:53:15,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:53:15,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:53:15,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:53:15,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:53:15,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:53:15,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c [2022-11-03 02:53:15,604 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/data/88a60f1cd/df61a879990740f3b6787e1cdbe6a989/FLAG3d77063ed [2022-11-03 02:53:16,137 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:53:16,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c [2022-11-03 02:53:16,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/data/88a60f1cd/df61a879990740f3b6787e1cdbe6a989/FLAG3d77063ed [2022-11-03 02:53:16,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/data/88a60f1cd/df61a879990740f3b6787e1cdbe6a989 [2022-11-03 02:53:16,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:53:16,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:53:16,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:53:16,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:53:16,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:53:16,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:53:16" (1/1) ... [2022-11-03 02:53:16,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd129db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:16, skipping insertion in model container [2022-11-03 02:53:16,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:53:16" (1/1) ... [2022-11-03 02:53:16,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:53:16,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:53:16,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c[9333,9346] [2022-11-03 02:53:16,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:53:16,902 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:53:16,950 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c[9333,9346] [2022-11-03 02:53:17,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:53:17,044 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:53:17,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17 WrapperNode [2022-11-03 02:53:17,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:53:17,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:53:17,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:53:17,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:53:17,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (1/1) ... [2022-11-03 02:53:17,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (1/1) ... [2022-11-03 02:53:17,118 INFO L138 Inliner]: procedures = 63, calls = 177, calls flagged for inlining = 29, calls inlined = 26, statements flattened = 351 [2022-11-03 02:53:17,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:53:17,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:53:17,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:53:17,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:53:17,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (1/1) ... [2022-11-03 02:53:17,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (1/1) ... [2022-11-03 02:53:17,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (1/1) ... [2022-11-03 02:53:17,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (1/1) ... [2022-11-03 02:53:17,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (1/1) ... [2022-11-03 02:53:17,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (1/1) ... [2022-11-03 02:53:17,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (1/1) ... [2022-11-03 02:53:17,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (1/1) ... [2022-11-03 02:53:17,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:53:17,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:53:17,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:53:17,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:53:17,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (1/1) ... [2022-11-03 02:53:17,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:53:17,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:53:17,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:53:17,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:53:17,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:53:17,247 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2022-11-03 02:53:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2022-11-03 02:53:17,247 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 02:53:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 02:53:17,247 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 02:53:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 02:53:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2022-11-03 02:53:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2022-11-03 02:53:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-03 02:53:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-03 02:53:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2022-11-03 02:53:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2022-11-03 02:53:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2022-11-03 02:53:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2022-11-03 02:53:17,249 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-03 02:53:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-03 02:53:17,249 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-03 02:53:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-03 02:53:17,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:53:17,249 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-03 02:53:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-03 02:53:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-03 02:53:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-03 02:53:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:53:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:53:17,394 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:53:17,396 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:53:17,947 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:53:18,016 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:53:18,016 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:53:18,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:53:18 BoogieIcfgContainer [2022-11-03 02:53:18,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:53:18,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:53:18,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:53:18,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:53:18,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:53:16" (1/3) ... [2022-11-03 02:53:18,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f62fb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:53:18, skipping insertion in model container [2022-11-03 02:53:18,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:17" (2/3) ... [2022-11-03 02:53:18,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f62fb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:53:18, skipping insertion in model container [2022-11-03 02:53:18,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:53:18" (3/3) ... [2022-11-03 02:53:18,028 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_productSimulator.cil.c [2022-11-03 02:53:18,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:53:18,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:53:18,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:53:18,102 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;@3ca43905, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:53:18,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:53:18,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 78 states have internal predecessors, (88), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 23 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-03 02:53:18,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 02:53:18,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:18,116 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:18,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:18,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash 95214816, now seen corresponding path program 1 times [2022-11-03 02:53:18,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:18,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663690117] [2022-11-03 02:53:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:18,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:18,400 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:53:18,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:18,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663690117] [2022-11-03 02:53:18,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663690117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:18,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:18,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:53:18,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177311077] [2022-11-03 02:53:18,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:18,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:53:18,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:18,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:53:18,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:53:18,476 INFO L87 Difference]: Start difference. First operand has 103 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 78 states have internal predecessors, (88), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 23 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:53:18,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:18,552 INFO L93 Difference]: Finished difference Result 190 states and 270 transitions. [2022-11-03 02:53:18,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:53:18,554 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 36 [2022-11-03 02:53:18,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:18,564 INFO L225 Difference]: With dead ends: 190 [2022-11-03 02:53:18,564 INFO L226 Difference]: Without dead ends: 98 [2022-11-03 02:53:18,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:53:18,571 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:18,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:53:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-03 02:53:18,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-03 02:53:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 74 states have internal predecessors, (80), 28 states have call successors, (28), 11 states have call predecessors, (28), 10 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-03 02:53:18,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 135 transitions. [2022-11-03 02:53:18,620 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 135 transitions. Word has length 36 [2022-11-03 02:53:18,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:18,622 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 135 transitions. [2022-11-03 02:53:18,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:53:18,622 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 135 transitions. [2022-11-03 02:53:18,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 02:53:18,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:18,625 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:18,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:53:18,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:18,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1891052017, now seen corresponding path program 1 times [2022-11-03 02:53:18,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:18,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427319449] [2022-11-03 02:53:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:18,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:53:18,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:18,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427319449] [2022-11-03 02:53:18,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427319449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:18,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:18,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:53:18,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351796179] [2022-11-03 02:53:18,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:18,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:53:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:53:18,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:18,848 INFO L87 Difference]: Start difference. First operand 98 states and 135 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:53:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:18,909 INFO L93 Difference]: Finished difference Result 153 states and 211 transitions. [2022-11-03 02:53:18,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:53:18,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 37 [2022-11-03 02:53:18,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:18,912 INFO L225 Difference]: With dead ends: 153 [2022-11-03 02:53:18,912 INFO L226 Difference]: Without dead ends: 90 [2022-11-03 02:53:18,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:18,914 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 16 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:18,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 194 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:53:18,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-03 02:53:18,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-03 02:53:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 69 states have internal predecessors, (74), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 20 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-03 02:53:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 124 transitions. [2022-11-03 02:53:18,927 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 124 transitions. Word has length 37 [2022-11-03 02:53:18,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:18,928 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 124 transitions. [2022-11-03 02:53:18,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:53:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 124 transitions. [2022-11-03 02:53:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 02:53:18,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:18,930 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:18,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:53:18,930 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:18,931 INFO L85 PathProgramCache]: Analyzing trace with hash 984782066, now seen corresponding path program 1 times [2022-11-03 02:53:18,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:18,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227912104] [2022-11-03 02:53:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:18,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:53:19,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:19,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227912104] [2022-11-03 02:53:19,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227912104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:19,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:19,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:53:19,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223729675] [2022-11-03 02:53:19,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:19,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:53:19,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:19,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:53:19,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:53:19,369 INFO L87 Difference]: Start difference. First operand 90 states and 124 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:53:19,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:19,659 INFO L93 Difference]: Finished difference Result 258 states and 358 transitions. [2022-11-03 02:53:19,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:53:19,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2022-11-03 02:53:19,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:19,664 INFO L225 Difference]: With dead ends: 258 [2022-11-03 02:53:19,664 INFO L226 Difference]: Without dead ends: 184 [2022-11-03 02:53:19,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:53:19,667 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 169 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:19,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 348 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:53:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-03 02:53:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2022-11-03 02:53:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 140 states have internal predecessors, (154), 39 states have call successors, (39), 20 states have call predecessors, (39), 23 states have return successors, (44), 38 states have call predecessors, (44), 39 states have call successors, (44) [2022-11-03 02:53:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2022-11-03 02:53:19,709 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 40 [2022-11-03 02:53:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:19,709 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2022-11-03 02:53:19,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:53:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2022-11-03 02:53:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 02:53:19,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:19,711 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:19,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:53:19,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:19,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:19,712 INFO L85 PathProgramCache]: Analyzing trace with hash -57611138, now seen corresponding path program 1 times [2022-11-03 02:53:19,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:19,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619592703] [2022-11-03 02:53:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:19,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:53:20,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:20,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619592703] [2022-11-03 02:53:20,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619592703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:20,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:20,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:53:20,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211395747] [2022-11-03 02:53:20,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:20,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:53:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:20,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:53:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:53:20,096 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 02:53:20,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:20,993 INFO L93 Difference]: Finished difference Result 395 states and 541 transitions. [2022-11-03 02:53:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:53:20,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 43 [2022-11-03 02:53:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:21,002 INFO L225 Difference]: With dead ends: 395 [2022-11-03 02:53:21,003 INFO L226 Difference]: Without dead ends: 318 [2022-11-03 02:53:21,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:53:21,008 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 314 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:21,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 522 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:53:21,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-03 02:53:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 271. [2022-11-03 02:53:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 179 states have (on average 1.312849162011173) internal successors, (235), 213 states have internal predecessors, (235), 54 states have call successors, (54), 31 states have call predecessors, (54), 37 states have return successors, (64), 58 states have call predecessors, (64), 54 states have call successors, (64) [2022-11-03 02:53:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 353 transitions. [2022-11-03 02:53:21,053 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 353 transitions. Word has length 43 [2022-11-03 02:53:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:21,053 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 353 transitions. [2022-11-03 02:53:21,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 02:53:21,054 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 353 transitions. [2022-11-03 02:53:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 02:53:21,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:21,057 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:21,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:53:21,058 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:21,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:21,058 INFO L85 PathProgramCache]: Analyzing trace with hash 226918611, now seen corresponding path program 1 times [2022-11-03 02:53:21,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:21,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983880069] [2022-11-03 02:53:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:21,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:53:21,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:21,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983880069] [2022-11-03 02:53:21,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983880069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:21,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:21,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:53:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875733043] [2022-11-03 02:53:21,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:21,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:53:21,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:21,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:53:21,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:21,176 INFO L87 Difference]: Start difference. First operand 271 states and 353 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:53:21,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:21,256 INFO L93 Difference]: Finished difference Result 601 states and 788 transitions. [2022-11-03 02:53:21,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:53:21,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2022-11-03 02:53:21,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:21,259 INFO L225 Difference]: With dead ends: 601 [2022-11-03 02:53:21,260 INFO L226 Difference]: Without dead ends: 346 [2022-11-03 02:53:21,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:21,262 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 104 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:21,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 140 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:53:21,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-03 02:53:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 335. [2022-11-03 02:53:21,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 227 states have (on average 1.3215859030837005) internal successors, (300), 266 states have internal predecessors, (300), 62 states have call successors, (62), 39 states have call predecessors, (62), 45 states have return successors, (77), 66 states have call predecessors, (77), 62 states have call successors, (77) [2022-11-03 02:53:21,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 439 transitions. [2022-11-03 02:53:21,327 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 439 transitions. Word has length 72 [2022-11-03 02:53:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:21,327 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 439 transitions. [2022-11-03 02:53:21,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:53:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 439 transitions. [2022-11-03 02:53:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:53:21,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:21,332 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:21,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:53:21,332 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:21,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1342599677, now seen corresponding path program 1 times [2022-11-03 02:53:21,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:21,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090914376] [2022-11-03 02:53:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:21,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:53:21,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:21,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090914376] [2022-11-03 02:53:21,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090914376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:21,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:21,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:53:21,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135282546] [2022-11-03 02:53:21,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:21,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:53:21,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:21,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:53:21,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:21,398 INFO L87 Difference]: Start difference. First operand 335 states and 439 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:53:21,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:21,575 INFO L93 Difference]: Finished difference Result 674 states and 888 transitions. [2022-11-03 02:53:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:53:21,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 80 [2022-11-03 02:53:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:21,580 INFO L225 Difference]: With dead ends: 674 [2022-11-03 02:53:21,580 INFO L226 Difference]: Without dead ends: 355 [2022-11-03 02:53:21,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:21,589 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 150 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:21,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 204 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:53:21,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-03 02:53:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 344. [2022-11-03 02:53:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 233 states have (on average 1.3133047210300428) internal successors, (306), 272 states have internal predecessors, (306), 65 states have call successors, (65), 42 states have call predecessors, (65), 45 states have return successors, (80), 66 states have call predecessors, (80), 65 states have call successors, (80) [2022-11-03 02:53:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 451 transitions. [2022-11-03 02:53:21,653 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 451 transitions. Word has length 80 [2022-11-03 02:53:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:21,654 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 451 transitions. [2022-11-03 02:53:21,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:53:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 451 transitions. [2022-11-03 02:53:21,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 02:53:21,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:21,660 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:21,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:53:21,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:21,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash -121839512, now seen corresponding path program 1 times [2022-11-03 02:53:21,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:21,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110562134] [2022-11-03 02:53:21,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:21,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:53:21,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:21,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110562134] [2022-11-03 02:53:21,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110562134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:21,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:21,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:53:21,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226864064] [2022-11-03 02:53:21,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:21,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:53:21,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:21,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:53:21,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:21,802 INFO L87 Difference]: Start difference. First operand 344 states and 451 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 02:53:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:21,921 INFO L93 Difference]: Finished difference Result 628 states and 845 transitions. [2022-11-03 02:53:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:53:21,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 76 [2022-11-03 02:53:21,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:21,925 INFO L225 Difference]: With dead ends: 628 [2022-11-03 02:53:21,925 INFO L226 Difference]: Without dead ends: 407 [2022-11-03 02:53:21,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:21,927 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 58 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:21,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 265 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:53:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-03 02:53:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 399. [2022-11-03 02:53:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 271 states have (on average 1.3099630996309963) internal successors, (355), 315 states have internal predecessors, (355), 75 states have call successors, (75), 49 states have call predecessors, (75), 52 states have return successors, (101), 76 states have call predecessors, (101), 75 states have call successors, (101) [2022-11-03 02:53:21,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 531 transitions. [2022-11-03 02:53:21,974 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 531 transitions. Word has length 76 [2022-11-03 02:53:21,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:21,975 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 531 transitions. [2022-11-03 02:53:21,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 02:53:21,975 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 531 transitions. [2022-11-03 02:53:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 02:53:21,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:21,977 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:21,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:53:21,978 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1063160965, now seen corresponding path program 1 times [2022-11-03 02:53:21,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:21,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466781845] [2022-11-03 02:53:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:21,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:53:22,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:22,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466781845] [2022-11-03 02:53:22,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466781845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:53:22,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228350984] [2022-11-03 02:53:22,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:22,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:53:22,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:53:22,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:53:22,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:53:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:22,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:53:22,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 02:53:23,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:53:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 02:53:23,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228350984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:53:23,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1021913981] [2022-11-03 02:53:23,980 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-11-03 02:53:23,980 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:53:23,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:53:23,989 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:53:23,990 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:53:38,828 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 79 for LOIs [2022-11-03 02:53:39,078 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__methaneAlarm with input of size 63 for LOIs [2022-11-03 02:53:39,167 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 80 for LOIs [2022-11-03 02:53:39,184 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__lowWaterSensor with input of size 61 for LOIs [2022-11-03 02:53:39,371 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__before__methaneQuery with input of size 58 for LOIs [2022-11-03 02:53:39,377 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 62 for LOIs [2022-11-03 02:53:39,385 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:53:59,929 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7833#(and (<= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483647) (<= |old(~waterLevel~0)| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~2#1|) (<= 0 (+ ~__SELECTED_FEATURE_lowWaterSensor~0 2147483648)) (<= ~__SELECTED_FEATURE_lowWaterSensor~0 2147483647) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| 0) (<= 0 (+ |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483648)) (<= 0 (+ ~__SELECTED_FEATURE_methaneQuery~0 2147483648)) (<= ~__SELECTED_FEATURE_highWaterSensor~0 2147483647) (<= 0 ~systemActive~0) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (<= 0 (+ ~__SELECTED_FEATURE_methaneAlarm~0 2147483648)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| |timeShift_getWaterLevel_#res#1|) (<= 0 (+ 2147483648 ~__SELECTED_FEATURE_startCommand~0)) (<= ~__SELECTED_FEATURE_methaneQuery~0 2147483647) (<= 0 (+ 2147483648 ~__SELECTED_FEATURE_highWaterSensor~0)) (= ~__GUIDSL_ROOT_PRODUCTION~0 1) (<= ~__SELECTED_FEATURE_startCommand~0 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~9#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (= ~head~0.base 0) (<= ~__SELECTED_FEATURE_methaneAlarm~0 2147483647) (= |#NULL.offset| 0) (= ~__SELECTED_FEATURE_base~0 1) (<= 0 (+ ~__SELECTED_FEATURE_stopCommand~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= |timeShift_getWaterLevel_~retValue_acc~9#1| ~waterLevel~0) (<= ~__SELECTED_FEATURE_stopCommand~0 2147483647) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~2#1|))' at error location [2022-11-03 02:53:59,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:53:59,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:53:59,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 15 [2022-11-03 02:53:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348168521] [2022-11-03 02:53:59,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:53:59,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:53:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:53:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3529, Unknown=0, NotChecked=0, Total=4032 [2022-11-03 02:53:59,933 INFO L87 Difference]: Start difference. First operand 399 states and 531 transitions. Second operand has 15 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-11-03 02:54:01,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:01,768 INFO L93 Difference]: Finished difference Result 773 states and 1050 transitions. [2022-11-03 02:54:01,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 02:54:01,768 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 79 [2022-11-03 02:54:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:01,772 INFO L225 Difference]: With dead ends: 773 [2022-11-03 02:54:01,772 INFO L226 Difference]: Without dead ends: 615 [2022-11-03 02:54:01,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 185 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3101 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=764, Invalid=5716, Unknown=0, NotChecked=0, Total=6480 [2022-11-03 02:54:01,777 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 740 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:01,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 464 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 02:54:01,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-03 02:54:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 579. [2022-11-03 02:54:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 397 states have (on average 1.2871536523929472) internal successors, (511), 455 states have internal predecessors, (511), 101 states have call successors, (101), 70 states have call predecessors, (101), 80 states have return successors, (135), 112 states have call predecessors, (135), 101 states have call successors, (135) [2022-11-03 02:54:01,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 747 transitions. [2022-11-03 02:54:01,846 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 747 transitions. Word has length 79 [2022-11-03 02:54:01,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:01,847 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 747 transitions. [2022-11-03 02:54:01,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-11-03 02:54:01,848 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 747 transitions. [2022-11-03 02:54:01,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 02:54:01,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:01,850 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:01,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:02,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 02:54:02,075 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:02,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1158331010, now seen corresponding path program 1 times [2022-11-03 02:54:02,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:02,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80628170] [2022-11-03 02:54:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:02,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:54:02,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:02,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80628170] [2022-11-03 02:54:02,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80628170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:02,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:02,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:54:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100068089] [2022-11-03 02:54:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:02,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:02,133 INFO L87 Difference]: Start difference. First operand 579 states and 747 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:54:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:02,267 INFO L93 Difference]: Finished difference Result 1667 states and 2172 transitions. [2022-11-03 02:54:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:02,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 84 [2022-11-03 02:54:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:02,274 INFO L225 Difference]: With dead ends: 1667 [2022-11-03 02:54:02,275 INFO L226 Difference]: Without dead ends: 1104 [2022-11-03 02:54:02,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:02,283 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 83 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:02,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 230 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:54:02,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-11-03 02:54:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1102. [2022-11-03 02:54:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 763 states have (on average 1.2883355176933158) internal successors, (983), 864 states have internal predecessors, (983), 180 states have call successors, (180), 138 states have call predecessors, (180), 158 states have return successors, (256), 196 states have call predecessors, (256), 180 states have call successors, (256) [2022-11-03 02:54:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1419 transitions. [2022-11-03 02:54:02,388 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1419 transitions. Word has length 84 [2022-11-03 02:54:02,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:02,389 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1419 transitions. [2022-11-03 02:54:02,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:54:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1419 transitions. [2022-11-03 02:54:02,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 02:54:02,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:02,397 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:02,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:54:02,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:02,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:02,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1646439614, now seen corresponding path program 1 times [2022-11-03 02:54:02,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:02,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594929359] [2022-11-03 02:54:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:02,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 02:54:02,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:02,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594929359] [2022-11-03 02:54:02,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594929359] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:54:02,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820602535] [2022-11-03 02:54:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:02,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:02,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:54:02,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:54:02,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:54:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:02,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:54:02,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:54:02,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:02,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820602535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:02,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:54:02,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-03 02:54:02,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74938616] [2022-11-03 02:54:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:02,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:02,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:54:02,664 INFO L87 Difference]: Start difference. First operand 1102 states and 1419 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:54:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:02,877 INFO L93 Difference]: Finished difference Result 3185 states and 4233 transitions. [2022-11-03 02:54:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:02,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 84 [2022-11-03 02:54:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:02,889 INFO L225 Difference]: With dead ends: 3185 [2022-11-03 02:54:02,889 INFO L226 Difference]: Without dead ends: 2101 [2022-11-03 02:54:02,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:54:02,894 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 67 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:02,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 242 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:54:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2022-11-03 02:54:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2083. [2022-11-03 02:54:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 1451 states have (on average 1.2873880082701585) internal successors, (1868), 1623 states have internal predecessors, (1868), 324 states have call successors, (324), 273 states have call predecessors, (324), 307 states have return successors, (526), 338 states have call predecessors, (526), 324 states have call successors, (526) [2022-11-03 02:54:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2718 transitions. [2022-11-03 02:54:03,142 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2718 transitions. Word has length 84 [2022-11-03 02:54:03,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:03,142 INFO L495 AbstractCegarLoop]: Abstraction has 2083 states and 2718 transitions. [2022-11-03 02:54:03,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:54:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2718 transitions. [2022-11-03 02:54:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 02:54:03,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:03,147 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:03,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 02:54:03,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:54:03,367 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:03,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:03,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1906473638, now seen corresponding path program 1 times [2022-11-03 02:54:03,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:03,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113844024] [2022-11-03 02:54:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 02:54:03,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:03,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113844024] [2022-11-03 02:54:03,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113844024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:54:03,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550263359] [2022-11-03 02:54:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:03,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:03,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:54:03,428 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:54:03,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:54:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:03,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:54:03,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:54:03,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:03,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550263359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:03,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:54:03,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-03 02:54:03,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460898640] [2022-11-03 02:54:03,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:03,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:03,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:54:03,610 INFO L87 Difference]: Start difference. First operand 2083 states and 2718 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:54:03,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:03,887 INFO L93 Difference]: Finished difference Result 4610 states and 6259 transitions. [2022-11-03 02:54:03,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:03,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 85 [2022-11-03 02:54:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:03,905 INFO L225 Difference]: With dead ends: 4610 [2022-11-03 02:54:03,905 INFO L226 Difference]: Without dead ends: 2547 [2022-11-03 02:54:03,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:54:03,914 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 70 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:03,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 213 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:54:03,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2022-11-03 02:54:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2547. [2022-11-03 02:54:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 1803 states have (on average 1.2756516916250693) internal successors, (2300), 1975 states have internal predecessors, (2300), 372 states have call successors, (372), 345 states have call predecessors, (372), 371 states have return successors, (718), 378 states have call predecessors, (718), 372 states have call successors, (718) [2022-11-03 02:54:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3390 transitions. [2022-11-03 02:54:04,213 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3390 transitions. Word has length 85 [2022-11-03 02:54:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:04,213 INFO L495 AbstractCegarLoop]: Abstraction has 2547 states and 3390 transitions. [2022-11-03 02:54:04,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:54:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3390 transitions. [2022-11-03 02:54:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 02:54:04,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:04,220 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:04,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:04,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 02:54:04,443 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:04,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:04,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1311758721, now seen corresponding path program 1 times [2022-11-03 02:54:04,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:04,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893405117] [2022-11-03 02:54:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:04,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 02:54:04,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:04,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893405117] [2022-11-03 02:54:04,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893405117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:04,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:04,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:54:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191966933] [2022-11-03 02:54:04,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:54:04,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:04,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:54:04,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:54:04,614 INFO L87 Difference]: Start difference. First operand 2547 states and 3390 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:54:05,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:05,274 INFO L93 Difference]: Finished difference Result 6234 states and 8319 transitions. [2022-11-03 02:54:05,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:54:05,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 86 [2022-11-03 02:54:05,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:05,301 INFO L225 Difference]: With dead ends: 6234 [2022-11-03 02:54:05,301 INFO L226 Difference]: Without dead ends: 5055 [2022-11-03 02:54:05,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:54:05,308 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 107 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:05,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 550 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:54:05,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5055 states. [2022-11-03 02:54:05,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5055 to 4886. [2022-11-03 02:54:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4886 states, 3550 states have (on average 1.279718309859155) internal successors, (4543), 3817 states have internal predecessors, (4543), 662 states have call successors, (662), 615 states have call predecessors, (662), 673 states have return successors, (1352), 685 states have call predecessors, (1352), 662 states have call successors, (1352) [2022-11-03 02:54:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 6557 transitions. [2022-11-03 02:54:05,901 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 6557 transitions. Word has length 86 [2022-11-03 02:54:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:05,901 INFO L495 AbstractCegarLoop]: Abstraction has 4886 states and 6557 transitions. [2022-11-03 02:54:05,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:54:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 6557 transitions. [2022-11-03 02:54:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 02:54:05,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:05,915 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:05,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:54:05,915 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:05,916 INFO L85 PathProgramCache]: Analyzing trace with hash -848941000, now seen corresponding path program 1 times [2022-11-03 02:54:05,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:05,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437005215] [2022-11-03 02:54:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:05,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 02:54:05,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:05,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437005215] [2022-11-03 02:54:05,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437005215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:05,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:05,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:54:05,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751602404] [2022-11-03 02:54:05,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:05,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:05,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:05,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:05,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:05,969 INFO L87 Difference]: Start difference. First operand 4886 states and 6557 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:54:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:06,482 INFO L93 Difference]: Finished difference Result 7363 states and 9893 transitions. [2022-11-03 02:54:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 88 [2022-11-03 02:54:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:06,509 INFO L225 Difference]: With dead ends: 7363 [2022-11-03 02:54:06,509 INFO L226 Difference]: Without dead ends: 5032 [2022-11-03 02:54:06,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:06,520 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 81 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:06,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 267 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:54:06,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5032 states. [2022-11-03 02:54:07,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5032 to 4504. [2022-11-03 02:54:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4504 states, 3282 states have (on average 1.2726995734308348) internal successors, (4177), 3524 states have internal predecessors, (4177), 610 states have call successors, (610), 569 states have call predecessors, (610), 611 states have return successors, (1168), 623 states have call predecessors, (1168), 610 states have call successors, (1168) [2022-11-03 02:54:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 5955 transitions. [2022-11-03 02:54:07,106 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 5955 transitions. Word has length 88 [2022-11-03 02:54:07,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:07,106 INFO L495 AbstractCegarLoop]: Abstraction has 4504 states and 5955 transitions. [2022-11-03 02:54:07,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:54:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 5955 transitions. [2022-11-03 02:54:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 02:54:07,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:07,117 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:07,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:54:07,118 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:07,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:07,118 INFO L85 PathProgramCache]: Analyzing trace with hash -549574229, now seen corresponding path program 1 times [2022-11-03 02:54:07,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:07,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231271226] [2022-11-03 02:54:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 02:54:07,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:07,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231271226] [2022-11-03 02:54:07,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231271226] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:54:07,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703692139] [2022-11-03 02:54:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:07,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:07,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:54:07,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:54:07,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:54:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:07,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:54:07,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:54:08,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:08,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703692139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:08,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:54:08,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-11-03 02:54:08,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115011517] [2022-11-03 02:54:08,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:08,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:54:08,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:08,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:54:08,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:54:08,030 INFO L87 Difference]: Start difference. First operand 4504 states and 5955 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 02:54:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:09,626 INFO L93 Difference]: Finished difference Result 8690 states and 11569 transitions. [2022-11-03 02:54:09,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:54:09,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 86 [2022-11-03 02:54:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:09,658 INFO L225 Difference]: With dead ends: 8690 [2022-11-03 02:54:09,658 INFO L226 Difference]: Without dead ends: 5278 [2022-11-03 02:54:09,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:54:09,672 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 225 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:09,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 407 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:54:09,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5278 states. [2022-11-03 02:54:10,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5278 to 4407. [2022-11-03 02:54:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4407 states, 3221 states have (on average 1.278484942564421) internal successors, (4118), 3446 states have internal predecessors, (4118), 598 states have call successors, (598), 565 states have call predecessors, (598), 587 states have return successors, (1052), 600 states have call predecessors, (1052), 598 states have call successors, (1052) [2022-11-03 02:54:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4407 states to 4407 states and 5768 transitions. [2022-11-03 02:54:10,264 INFO L78 Accepts]: Start accepts. Automaton has 4407 states and 5768 transitions. Word has length 86 [2022-11-03 02:54:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:10,265 INFO L495 AbstractCegarLoop]: Abstraction has 4407 states and 5768 transitions. [2022-11-03 02:54:10,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 02:54:10,265 INFO L276 IsEmpty]: Start isEmpty. Operand 4407 states and 5768 transitions. [2022-11-03 02:54:10,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 02:54:10,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:10,274 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:10,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:10,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 02:54:10,495 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:10,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:10,495 INFO L85 PathProgramCache]: Analyzing trace with hash -831968201, now seen corresponding path program 1 times [2022-11-03 02:54:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:10,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340288013] [2022-11-03 02:54:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:54:11,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:11,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340288013] [2022-11-03 02:54:11,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340288013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:54:11,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218736201] [2022-11-03 02:54:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:11,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:11,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:54:11,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:54:11,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:54:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:11,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 02:54:11,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:54:11,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:54:13,333 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 02:54:13,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218736201] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:54:13,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1881004992] [2022-11-03 02:54:13,336 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-03 02:54:13,337 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:54:13,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:54:13,337 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:54:13,338 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:54:28,237 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 79 for LOIs [2022-11-03 02:54:28,258 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 62 for LOIs [2022-11-03 02:54:28,380 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__methaneAlarm with input of size 59 for LOIs [2022-11-03 02:54:28,606 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 80 for LOIs [2022-11-03 02:54:28,618 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__lowWaterSensor with input of size 61 for LOIs [2022-11-03 02:54:28,789 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__before__methaneQuery with input of size 65 for LOIs [2022-11-03 02:54:28,796 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 67 for LOIs [2022-11-03 02:54:28,801 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:54:50,891 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '89466#(and (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~2#1|) (<= 0 (+ ~__SELECTED_FEATURE_lowWaterSensor~0 2147483648)) (<= ~__SELECTED_FEATURE_lowWaterSensor~0 2147483647) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| 0) (<= 0 (+ ~__SELECTED_FEATURE_methaneQuery~0 2147483648)) (<= ~__SELECTED_FEATURE_highWaterSensor~0 2147483647) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (<= 0 (+ 2147483648 ~__SELECTED_FEATURE_startCommand~0)) (<= ~__SELECTED_FEATURE_methaneQuery~0 2147483647) (<= 0 (+ 2147483648 ~__SELECTED_FEATURE_highWaterSensor~0)) (= ~__SELECTED_FEATURE_methaneAlarm~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 1) (<= ~__SELECTED_FEATURE_startCommand~0 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~9#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= ~__SELECTED_FEATURE_base~0 1) (<= 0 (+ ~__SELECTED_FEATURE_stopCommand~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= |timeShift_getWaterLevel_~retValue_acc~9#1| ~waterLevel~0) (<= ~__SELECTED_FEATURE_stopCommand~0 2147483647) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~2#1|))' at error location [2022-11-03 02:54:50,891 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:54:50,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:54:50,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 33 [2022-11-03 02:54:50,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463872561] [2022-11-03 02:54:50,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:54:50,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 02:54:50,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:50,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 02:54:50,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=619, Invalid=5701, Unknown=0, NotChecked=0, Total=6320 [2022-11-03 02:54:50,895 INFO L87 Difference]: Start difference. First operand 4407 states and 5768 transitions. Second operand has 33 states, 30 states have (on average 4.433333333333334) internal successors, (133), 27 states have internal predecessors, (133), 16 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (37), 17 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-03 02:54:57,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:57,528 INFO L93 Difference]: Finished difference Result 7954 states and 10345 transitions. [2022-11-03 02:54:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-03 02:54:57,529 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 4.433333333333334) internal successors, (133), 27 states have internal predecessors, (133), 16 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (37), 17 states have call predecessors, (37), 13 states have call successors, (37) Word has length 89 [2022-11-03 02:54:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:57,564 INFO L225 Difference]: With dead ends: 7954 [2022-11-03 02:54:57,564 INFO L226 Difference]: Without dead ends: 6986 [2022-11-03 02:54:57,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 203 SyntacticMatches, 7 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6473 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=1288, Invalid=12754, Unknown=0, NotChecked=0, Total=14042 [2022-11-03 02:54:57,574 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1642 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 3885 mSolverCounterSat, 1088 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 4973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1088 IncrementalHoareTripleChecker+Valid, 3885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:57,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 1680 Invalid, 4973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1088 Valid, 3885 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 02:54:57,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2022-11-03 02:54:58,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 4896. [2022-11-03 02:54:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4896 states, 3576 states have (on average 1.2678970917225951) internal successors, (4534), 3837 states have internal predecessors, (4534), 662 states have call successors, (662), 623 states have call predecessors, (662), 657 states have return successors, (1164), 676 states have call predecessors, (1164), 662 states have call successors, (1164) [2022-11-03 02:54:58,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 6360 transitions. [2022-11-03 02:54:58,234 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 6360 transitions. Word has length 89 [2022-11-03 02:54:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:58,234 INFO L495 AbstractCegarLoop]: Abstraction has 4896 states and 6360 transitions. [2022-11-03 02:54:58,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 4.433333333333334) internal successors, (133), 27 states have internal predecessors, (133), 16 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (37), 17 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-03 02:54:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 6360 transitions. [2022-11-03 02:54:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 02:54:58,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:58,249 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:58,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:58,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:58,463 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:58,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1864536106, now seen corresponding path program 1 times [2022-11-03 02:54:58,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:58,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843164066] [2022-11-03 02:54:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:58,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:54:58,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:58,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843164066] [2022-11-03 02:54:58,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843164066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:54:58,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799682198] [2022-11-03 02:54:58,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:58,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:58,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:54:58,536 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:54:58,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:54:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:58,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:54:58,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-03 02:54:58,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:58,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799682198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:58,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:54:58,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-03 02:54:58,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908667843] [2022-11-03 02:54:58,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:58,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:58,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:58,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:58,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:54:58,739 INFO L87 Difference]: Start difference. First operand 4896 states and 6360 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:54:59,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:59,463 INFO L93 Difference]: Finished difference Result 7195 states and 9260 transitions. [2022-11-03 02:54:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:59,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 121 [2022-11-03 02:54:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:59,501 INFO L225 Difference]: With dead ends: 7195 [2022-11-03 02:54:59,502 INFO L226 Difference]: Without dead ends: 4918 [2022-11-03 02:54:59,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:54:59,511 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 67 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:59,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 277 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:54:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4918 states. [2022-11-03 02:55:00,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4918 to 4916. [2022-11-03 02:55:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4916 states, 3588 states have (on average 1.2605908584169454) internal successors, (4523), 3849 states have internal predecessors, (4523), 670 states have call successors, (670), 631 states have call predecessors, (670), 657 states have return successors, (1042), 676 states have call predecessors, (1042), 670 states have call successors, (1042) [2022-11-03 02:55:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 6235 transitions. [2022-11-03 02:55:00,219 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 6235 transitions. Word has length 121 [2022-11-03 02:55:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:00,220 INFO L495 AbstractCegarLoop]: Abstraction has 4916 states and 6235 transitions. [2022-11-03 02:55:00,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:55:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 6235 transitions. [2022-11-03 02:55:00,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 02:55:00,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:00,232 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:00,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:55:00,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 02:55:00,455 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:00,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:00,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1761849453, now seen corresponding path program 1 times [2022-11-03 02:55:00,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:55:00,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547360858] [2022-11-03 02:55:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:55:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:55:00,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:55:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:55:00,569 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:55:00,569 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:55:00,570 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:55:00,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:55:00,575 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:00,580 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:55:00,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:55:00 BoogieIcfgContainer [2022-11-03 02:55:00,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:55:00,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:55:00,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:55:00,697 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:55:00,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:53:18" (3/4) ... [2022-11-03 02:55:00,700 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 02:55:00,809 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:55:00,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:55:00,810 INFO L158 Benchmark]: Toolchain (without parser) took 104350.88ms. Allocated memory was 111.1MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 77.0MB in the beginning and 883.4MB in the end (delta: -806.4MB). Peak memory consumption was 792.3MB. Max. memory is 16.1GB. [2022-11-03 02:55:00,810 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 49.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:55:00,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 584.14ms. Allocated memory is still 111.1MB. Free memory was 77.0MB in the beginning and 77.5MB in the end (delta: -447.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:55:00,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.96ms. Allocated memory is still 111.1MB. Free memory was 77.1MB in the beginning and 74.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:55:00,811 INFO L158 Benchmark]: Boogie Preprocessor took 31.63ms. Allocated memory is still 111.1MB. Free memory was 74.6MB in the beginning and 72.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:55:00,812 INFO L158 Benchmark]: RCFGBuilder took 867.42ms. Allocated memory is still 111.1MB. Free memory was 72.5MB in the beginning and 71.5MB in the end (delta: 1.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-03 02:55:00,812 INFO L158 Benchmark]: TraceAbstraction took 102675.21ms. Allocated memory was 111.1MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 71.0MB in the beginning and 894.9MB in the end (delta: -823.9MB). Peak memory consumption was 779.3MB. Max. memory is 16.1GB. [2022-11-03 02:55:00,812 INFO L158 Benchmark]: Witness Printer took 112.73ms. Allocated memory is still 1.7GB. Free memory was 894.9MB in the beginning and 883.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:55:00,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 49.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 584.14ms. Allocated memory is still 111.1MB. Free memory was 77.0MB in the beginning and 77.5MB in the end (delta: -447.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.96ms. Allocated memory is still 111.1MB. Free memory was 77.1MB in the beginning and 74.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.63ms. Allocated memory is still 111.1MB. Free memory was 74.6MB in the beginning and 72.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 867.42ms. Allocated memory is still 111.1MB. Free memory was 72.5MB in the beginning and 71.5MB in the end (delta: 1.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 102675.21ms. Allocated memory was 111.1MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 71.0MB in the beginning and 894.9MB in the end (delta: -823.9MB). Peak memory consumption was 779.3MB. Max. memory is 16.1GB. * Witness Printer took 112.73ms. Allocated memory is still 1.7GB. Free memory was 894.9MB in the beginning and 883.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. 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 - CounterExampleResult [Line: 612]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L155] int __SELECTED_FEATURE_base ; [L156] int __SELECTED_FEATURE_highWaterSensor ; [L157] int __SELECTED_FEATURE_lowWaterSensor ; [L158] int __SELECTED_FEATURE_methaneQuery ; [L159] int __SELECTED_FEATURE_methaneAlarm ; [L160] int __SELECTED_FEATURE_stopCommand ; [L161] int __SELECTED_FEATURE_startCommand ; [L162] int __GUIDSL_ROOT_PRODUCTION ; [L200] int pumpRunning = 0; [L201] int systemActive = 1; [L786] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L983] int waterLevel = 1; [L984] int methaneLevelCritical = 0; [L131] int retValue_acc ; [L132] int tmp ; [L136] CALL select_helpers() [L1117] __GUIDSL_ROOT_PRODUCTION = 1 [L136] RET select_helpers() [L137] CALL select_features() [L1102] __SELECTED_FEATURE_base = 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1103] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1103] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=29, systemActive=1, waterLevel=1] [L1103] __SELECTED_FEATURE_highWaterSensor = select_one() [L1104] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1104] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1104] __SELECTED_FEATURE_lowWaterSensor = select_one() [L1105] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1105] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1105] __SELECTED_FEATURE_methaneQuery = select_one() [L1106] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1106] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1106] __SELECTED_FEATURE_methaneAlarm = select_one() [L1107] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1107] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1107] __SELECTED_FEATURE_stopCommand = select_one() [L1108] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1108] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1108] __SELECTED_FEATURE_startCommand = select_one() [L137] RET select_features() [L138] CALL, EXPR valid_product() [L1122] int retValue_acc ; [L1125] retValue_acc = __SELECTED_FEATURE_base [L1126] return (retValue_acc); [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L532] int splverifierCounter ; [L533] int tmp ; [L534] int tmp___0 ; [L535] int tmp___1 ; [L536] int tmp___2 ; [L539] splverifierCounter = 0 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L541] COND TRUE 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L543] COND TRUE splverifierCounter < 4 [L549] tmp = __VERIFIER_nondet_int() [L551] COND TRUE \read(tmp) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L553] CALL waterRise() VAL [\old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1001] COND TRUE waterLevel < 2 [L1002] waterLevel = waterLevel + 1 [L553] RET waterRise() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L559] tmp___0 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___0)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L569] tmp___2 = __VERIFIER_nondet_int() [L571] COND TRUE \read(tmp___2) [L572] COND FALSE !(\read(__SELECTED_FEATURE_startCommand)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L596] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L207] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L214] COND TRUE \read(systemActive) [L216] CALL processEnvironment() [L350] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L357] CALL processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L307] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L314] CALL processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L264] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L266] CALL processEnvironment__role__highWaterSensor() [L236] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L239] COND TRUE ! pumpRunning [L241] CALL, EXPR isHighWaterLevel() [L470] int retValue_acc ; [L471] int tmp ; [L472] int tmp___0 ; [L476] CALL, EXPR isHighWaterSensorDry() [L1063] int retValue_acc ; [L1066] COND FALSE !(waterLevel < 2) [L1070] retValue_acc = 0 [L1071] return (retValue_acc); [L476] RET, EXPR isHighWaterSensorDry() [L476] tmp = isHighWaterSensorDry() [L478] COND FALSE !(\read(tmp)) [L481] tmp___0 = 1 [L483] retValue_acc = tmp___0 [L484] return (retValue_acc); [L241] RET, EXPR isHighWaterLevel() [L241] tmp = isHighWaterLevel() [L243] COND TRUE \read(tmp) [L245] CALL activatePump() [L392] COND FALSE !(\read(__SELECTED_FEATURE_methaneQuery)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L399] CALL activatePump__before__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L367] pumpRunning = 1 [L399] RET activatePump__before__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L245] RET activatePump() [L266] RET processEnvironment__role__highWaterSensor() [L314] RET processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L357] RET processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L216] RET processEnvironment() [L222] CALL __utac_acc__Specification4_spec__1() [L166] int tmp ; [L167] int tmp___0 ; [L171] CALL, EXPR getWaterLevel() [L1054] int retValue_acc ; [L1057] retValue_acc = waterLevel [L1058] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp = getWaterLevel() [L173] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L222] RET __utac_acc__Specification4_spec__1() [L596] RET timeShift() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L541] COND TRUE 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L543] COND TRUE splverifierCounter < 4 [L549] tmp = __VERIFIER_nondet_int() [L551] COND FALSE !(\read(tmp)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L559] tmp___0 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___0)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L569] tmp___2 = __VERIFIER_nondet_int() [L571] COND TRUE \read(tmp___2) [L572] COND FALSE !(\read(__SELECTED_FEATURE_startCommand)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=2] [L596] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L207] COND TRUE \read(pumpRunning) [L209] CALL lowerWaterLevel() [L989] COND TRUE waterLevel > 0 [L990] waterLevel = waterLevel - 1 [L209] RET lowerWaterLevel() [L214] COND TRUE \read(systemActive) [L216] CALL processEnvironment() [L350] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L357] CALL processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L307] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L314] CALL processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L264] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L266] CALL processEnvironment__role__highWaterSensor() [L236] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L239] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L254] FCALL processEnvironment__before__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L266] RET processEnvironment__role__highWaterSensor() [L314] RET processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L357] RET processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L216] RET processEnvironment() [L222] CALL __utac_acc__Specification4_spec__1() [L166] int tmp ; [L167] int tmp___0 ; [L171] CALL, EXPR getWaterLevel() [L1054] int retValue_acc ; [L1057] retValue_acc = waterLevel [L1058] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp = getWaterLevel() [L173] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L222] RET __utac_acc__Specification4_spec__1() [L596] RET timeShift() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L541] COND TRUE 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L543] COND TRUE splverifierCounter < 4 [L549] tmp = __VERIFIER_nondet_int() [L551] COND FALSE !(\read(tmp)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L559] tmp___0 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___0)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L569] tmp___2 = __VERIFIER_nondet_int() [L571] COND TRUE \read(tmp___2) [L572] COND FALSE !(\read(__SELECTED_FEATURE_startCommand)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-3, waterLevel=1] [L596] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L207] COND TRUE \read(pumpRunning) [L209] CALL lowerWaterLevel() [L989] COND TRUE waterLevel > 0 [L990] waterLevel = waterLevel - 1 [L209] RET lowerWaterLevel() [L214] COND TRUE \read(systemActive) [L216] CALL processEnvironment() [L350] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L357] CALL processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L307] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L314] CALL processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L264] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L266] CALL processEnvironment__role__highWaterSensor() [L236] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L239] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L254] FCALL processEnvironment__before__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L266] RET processEnvironment__role__highWaterSensor() [L314] RET processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L357] RET processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L216] RET processEnvironment() [L222] CALL __utac_acc__Specification4_spec__1() [L166] int tmp ; [L167] int tmp___0 ; [L171] CALL, EXPR getWaterLevel() [L1054] int retValue_acc ; [L1057] retValue_acc = waterLevel [L1058] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp = getWaterLevel() [L173] COND TRUE tmp == 0 [L175] CALL, EXPR isPumpRunning() [L425] int retValue_acc ; [L428] retValue_acc = pumpRunning [L429] return (retValue_acc); [L175] RET, EXPR isPumpRunning() [L175] tmp___0 = isPumpRunning() [L177] COND TRUE \read(tmp___0) [L179] CALL __automaton_fail() [L612] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 102.5s, OverallIterations: 17, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3942 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3893 mSDsluCounter, 6123 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4504 mSDsCounter, 1886 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6919 IncrementalHoareTripleChecker+Invalid, 8805 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1886 mSolverCounterUnsat, 2276 mSDtfsCounter, 6919 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1054 GetRequests, 789 SyntacticMatches, 15 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9643 ImplicationChecksByTransitivity, 47.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4916occurred in iteration=16, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 3798 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 1849 NumberOfCodeBlocks, 1849 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1874 ConstructedInterpolants, 0 QuantifiedInterpolants, 6863 SizeOfPredicates, 22 NumberOfNonLiveVariables, 3251 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 24 InterpolantComputations, 14 PerfectInterpolantSequences, 1077/1175 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-03 02:55:00,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff5c5d4-08e9-4f57-87cc-c80a3db40fe7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE