./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5af7a19aabc47c6ad0d023db96d81a1e5e3db737faffc67c3935346aa9890fbf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:32:39,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:32:39,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:32:39,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:32:39,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:32:39,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:32:39,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:32:39,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:32:39,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:32:39,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:32:39,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:32:39,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:32:39,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:32:39,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:32:39,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:32:39,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:32:39,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:32:39,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:32:39,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:32:39,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:32:39,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:32:39,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:32:39,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:32:39,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:32:39,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:32:39,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:32:39,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:32:39,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:32:39,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:32:39,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:32:39,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:32:39,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:32:39,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:32:39,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:32:39,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:32:39,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:32:39,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:32:39,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:32:39,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:32:39,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:32:39,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:32:39,341 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:32:39,376 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:32:39,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:32:39,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:32:39,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:32:39,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:32:39,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:32:39,378 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:32:39,378 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:32:39,378 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:32:39,378 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:32:39,379 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:32:39,379 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:32:39,379 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:32:39,379 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:32:39,379 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:32:39,380 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:32:39,380 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:32:39,380 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:32:39,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:32:39,381 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:32:39,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:32:39,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:32:39,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:32:39,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:32:39,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:32:39,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:32:39,382 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:32:39,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:32:39,382 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:32:39,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:32:39,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:32:39,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:32:39,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:32:39,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:32:39,384 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:32:39,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:32:39,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:32:39,384 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:32:39,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:32:39,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:32:39,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:32:39,385 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_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af7a19aabc47c6ad0d023db96d81a1e5e3db737faffc67c3935346aa9890fbf [2022-11-19 07:32:39,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:32:39,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:32:39,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:32:39,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:32:39,715 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:32:39,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec3_product25.cil.c [2022-11-19 07:32:39,780 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/data/8ba5f8ea7/a7ef8684dc4e4a8c82965d87a337ce42/FLAGba3e6319a [2022-11-19 07:32:40,289 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:32:40,290 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/sv-benchmarks/c/product-lines/minepump_spec3_product25.cil.c [2022-11-19 07:32:40,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/data/8ba5f8ea7/a7ef8684dc4e4a8c82965d87a337ce42/FLAGba3e6319a [2022-11-19 07:32:40,633 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/data/8ba5f8ea7/a7ef8684dc4e4a8c82965d87a337ce42 [2022-11-19 07:32:40,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:32:40,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:32:40,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:32:40,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:32:40,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:32:40,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:40" (1/1) ... [2022-11-19 07:32:40,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16777714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:40, skipping insertion in model container [2022-11-19 07:32:40,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:40" (1/1) ... [2022-11-19 07:32:40,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:32:40,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:32:40,920 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/sv-benchmarks/c/product-lines/minepump_spec3_product25.cil.c[2191,2204] [2022-11-19 07:32:41,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:32:41,094 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:32:41,119 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/sv-benchmarks/c/product-lines/minepump_spec3_product25.cil.c[2191,2204] [2022-11-19 07:32:41,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:32:41,204 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:32:41,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41 WrapperNode [2022-11-19 07:32:41,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:32:41,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:32:41,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:32:41,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:32:41,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (1/1) ... [2022-11-19 07:32:41,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (1/1) ... [2022-11-19 07:32:41,254 INFO L138 Inliner]: procedures = 53, calls = 96, calls flagged for inlining = 22, calls inlined = 17, statements flattened = 169 [2022-11-19 07:32:41,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:32:41,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:32:41,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:32:41,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:32:41,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (1/1) ... [2022-11-19 07:32:41,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (1/1) ... [2022-11-19 07:32:41,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (1/1) ... [2022-11-19 07:32:41,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (1/1) ... [2022-11-19 07:32:41,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (1/1) ... [2022-11-19 07:32:41,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (1/1) ... [2022-11-19 07:32:41,302 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (1/1) ... [2022-11-19 07:32:41,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (1/1) ... [2022-11-19 07:32:41,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:32:41,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:32:41,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:32:41,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:32:41,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (1/1) ... [2022-11-19 07:32:41,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:32:41,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:32:41,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:32:41,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:32:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:32:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 07:32:41,409 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 07:32:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:32:41,410 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:32:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:32:41,411 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:32:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-19 07:32:41,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-19 07:32:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 07:32:41,411 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 07:32:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:32:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 07:32:41,412 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 07:32:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:32:41,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:32:41,512 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:32:41,514 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:32:41,813 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:32:41,918 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:32:41,918 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:32:41,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:41 BoogieIcfgContainer [2022-11-19 07:32:41,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:32:41,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:32:41,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:32:41,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:32:41,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:32:40" (1/3) ... [2022-11-19 07:32:41,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f11913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:41, skipping insertion in model container [2022-11-19 07:32:41,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:41" (2/3) ... [2022-11-19 07:32:41,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f11913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:41, skipping insertion in model container [2022-11-19 07:32:41,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:41" (3/3) ... [2022-11-19 07:32:41,933 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product25.cil.c [2022-11-19 07:32:41,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:32:41,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:32:42,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:32:42,022 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;@3410e2f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:32:42,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:32:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 32 states have (on average 1.4375) internal successors, (46), 38 states have internal predecessors, (46), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-19 07:32:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:32:42,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:42,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:42,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:42,054 INFO L85 PathProgramCache]: Analyzing trace with hash 197152209, now seen corresponding path program 1 times [2022-11-19 07:32:42,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:42,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737411178] [2022-11-19 07:32:42,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:42,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:32:42,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:42,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737411178] [2022-11-19 07:32:42,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737411178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:42,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:42,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:32:42,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879166476] [2022-11-19 07:32:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:42,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:32:42,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:42,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:32:42,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:32:42,356 INFO L87 Difference]: Start difference. First operand has 49 states, 32 states have (on average 1.4375) internal successors, (46), 38 states have internal predecessors, (46), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:32:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:42,468 INFO L93 Difference]: Finished difference Result 96 states and 129 transitions. [2022-11-19 07:32:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:32:42,471 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-19 07:32:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:42,484 INFO L225 Difference]: With dead ends: 96 [2022-11-19 07:32:42,485 INFO L226 Difference]: Without dead ends: 44 [2022-11-19 07:32:42,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:32:42,492 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:42,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:32:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-19 07:32:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-19 07:32:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 34 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:32:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2022-11-19 07:32:42,533 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 17 [2022-11-19 07:32:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:42,533 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2022-11-19 07:32:42,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:32:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2022-11-19 07:32:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:32:42,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:42,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:42,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:32:42,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:42,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1976139193, now seen corresponding path program 1 times [2022-11-19 07:32:42,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:42,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940655259] [2022-11-19 07:32:42,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:42,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:32:42,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:42,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940655259] [2022-11-19 07:32:42,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940655259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:42,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:42,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:32:42,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594499540] [2022-11-19 07:32:42,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:42,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:32:42,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:42,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:32:42,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:42,724 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:32:42,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:42,762 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2022-11-19 07:32:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:32:42,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-19 07:32:42,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:42,763 INFO L225 Difference]: With dead ends: 65 [2022-11-19 07:32:42,763 INFO L226 Difference]: Without dead ends: 36 [2022-11-19 07:32:42,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:42,765 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:42,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 53 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:32:42,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-19 07:32:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-19 07:32:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 29 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 07:32:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2022-11-19 07:32:42,776 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 18 [2022-11-19 07:32:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:42,776 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2022-11-19 07:32:42,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:32:42,776 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2022-11-19 07:32:42,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:32:42,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:42,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:42,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:32:42,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:42,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:42,782 INFO L85 PathProgramCache]: Analyzing trace with hash 89645149, now seen corresponding path program 1 times [2022-11-19 07:32:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:42,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994414339] [2022-11-19 07:32:42,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:42,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:32:42,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:42,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994414339] [2022-11-19 07:32:42,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994414339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:42,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:42,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:32:42,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235454693] [2022-11-19 07:32:42,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:42,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:32:42,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:32:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:42,935 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:32:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:42,969 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2022-11-19 07:32:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:32:42,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-19 07:32:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:42,971 INFO L225 Difference]: With dead ends: 70 [2022-11-19 07:32:42,971 INFO L226 Difference]: Without dead ends: 36 [2022-11-19 07:32:42,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:42,973 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:42,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 29 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:32:42,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-19 07:32:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-19 07:32:42,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 29 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 07:32:42,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-11-19 07:32:42,981 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 20 [2022-11-19 07:32:42,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:42,981 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-11-19 07:32:42,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:32:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-11-19 07:32:42,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 07:32:42,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:42,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:42,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:32:42,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:42,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:42,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1871776409, now seen corresponding path program 1 times [2022-11-19 07:32:42,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:42,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730583148] [2022-11-19 07:32:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:42,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:32:43,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:43,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730583148] [2022-11-19 07:32:43,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730583148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:43,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:43,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:32:43,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059210834] [2022-11-19 07:32:43,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:43,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:32:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:43,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:32:43,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:32:43,283 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:32:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:43,556 INFO L93 Difference]: Finished difference Result 164 states and 202 transitions. [2022-11-19 07:32:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:32:43,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-19 07:32:43,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:43,559 INFO L225 Difference]: With dead ends: 164 [2022-11-19 07:32:43,559 INFO L226 Difference]: Without dead ends: 130 [2022-11-19 07:32:43,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:32:43,561 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 112 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:43,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 207 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:32:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-19 07:32:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2022-11-19 07:32:43,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 92 states have internal predecessors, (105), 19 states have call successors, (19), 18 states have call predecessors, (19), 18 states have return successors, (21), 18 states have call predecessors, (21), 19 states have call successors, (21) [2022-11-19 07:32:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 145 transitions. [2022-11-19 07:32:43,589 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 145 transitions. Word has length 23 [2022-11-19 07:32:43,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:43,589 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 145 transitions. [2022-11-19 07:32:43,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:32:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 145 transitions. [2022-11-19 07:32:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:32:43,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:43,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:43,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:32:43,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:43,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:43,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1150813617, now seen corresponding path program 1 times [2022-11-19 07:32:43,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:43,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606401292] [2022-11-19 07:32:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:43,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:43,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:32:43,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:43,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606401292] [2022-11-19 07:32:43,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606401292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:43,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:43,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:32:43,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619135125] [2022-11-19 07:32:43,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:43,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:32:43,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:43,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:32:43,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:32:43,806 INFO L87 Difference]: Start difference. First operand 120 states and 145 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:32:44,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:44,013 INFO L93 Difference]: Finished difference Result 334 states and 413 transitions. [2022-11-19 07:32:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:32:44,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-19 07:32:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:44,018 INFO L225 Difference]: With dead ends: 334 [2022-11-19 07:32:44,018 INFO L226 Difference]: Without dead ends: 216 [2022-11-19 07:32:44,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:32:44,020 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 72 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:44,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 131 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:32:44,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-19 07:32:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 193. [2022-11-19 07:32:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 144 states have internal predecessors, (164), 30 states have call successors, (30), 30 states have call predecessors, (30), 30 states have return successors, (40), 29 states have call predecessors, (40), 30 states have call successors, (40) [2022-11-19 07:32:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 234 transitions. [2022-11-19 07:32:44,055 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 234 transitions. Word has length 25 [2022-11-19 07:32:44,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:44,055 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 234 transitions. [2022-11-19 07:32:44,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:32:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 234 transitions. [2022-11-19 07:32:44,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 07:32:44,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:44,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:44,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:32:44,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:44,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:44,058 INFO L85 PathProgramCache]: Analyzing trace with hash -40527224, now seen corresponding path program 1 times [2022-11-19 07:32:44,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:44,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137496951] [2022-11-19 07:32:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:44,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:32:44,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:32:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:32:44,145 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:32:44,145 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:32:44,146 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:32:44,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:32:44,151 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-19 07:32:44,155 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:32:44,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:32:44 BoogieIcfgContainer [2022-11-19 07:32:44,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:32:44,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:32:44,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:32:44,223 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:32:44,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:41" (3/4) ... [2022-11-19 07:32:44,225 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:32:44,275 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:32:44,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:32:44,276 INFO L158 Benchmark]: Toolchain (without parser) took 3638.79ms. Allocated memory is still 144.7MB. Free memory was 106.5MB in the beginning and 75.1MB in the end (delta: 31.3MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2022-11-19 07:32:44,276 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 144.7MB. Free memory was 123.7MB in the beginning and 123.7MB in the end (delta: 69.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:32:44,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 567.11ms. Allocated memory is still 144.7MB. Free memory was 106.2MB in the beginning and 112.1MB in the end (delta: -5.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:32:44,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.50ms. Allocated memory is still 144.7MB. Free memory was 112.1MB in the beginning and 110.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:32:44,277 INFO L158 Benchmark]: Boogie Preprocessor took 58.16ms. Allocated memory is still 144.7MB. Free memory was 110.0MB in the beginning and 108.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:32:44,278 INFO L158 Benchmark]: RCFGBuilder took 607.33ms. Allocated memory is still 144.7MB. Free memory was 108.4MB in the beginning and 85.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-19 07:32:44,278 INFO L158 Benchmark]: TraceAbstraction took 2298.77ms. Allocated memory is still 144.7MB. Free memory was 84.9MB in the beginning and 79.3MB in the end (delta: 5.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2022-11-19 07:32:44,279 INFO L158 Benchmark]: Witness Printer took 52.17ms. Allocated memory is still 144.7MB. Free memory was 78.2MB in the beginning and 75.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:32:44,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 144.7MB. Free memory was 123.7MB in the beginning and 123.7MB in the end (delta: 69.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 567.11ms. Allocated memory is still 144.7MB. Free memory was 106.2MB in the beginning and 112.1MB in the end (delta: -5.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.50ms. Allocated memory is still 144.7MB. Free memory was 112.1MB in the beginning and 110.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.16ms. Allocated memory is still 144.7MB. Free memory was 110.0MB in the beginning and 108.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 607.33ms. Allocated memory is still 144.7MB. Free memory was 108.4MB in the beginning and 85.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2298.77ms. Allocated memory is still 144.7MB. Free memory was 84.9MB in the beginning and 79.3MB in the end (delta: 5.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Witness Printer took 52.17ms. Allocated memory is still 144.7MB. Free memory was 78.2MB in the beginning and 75.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 92]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L266] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L469] int methaneLevelCritical = 0; [L696] int pumpRunning = 0; [L468] int waterLevel = 1; [L697] int systemActive = 1; [L595] int cleanupTimeShifts = 4; [L671] int retValue_acc ; [L672] int tmp ; [L676] FCALL select_helpers() [L677] FCALL select_features() [L678] CALL, EXPR valid_product() [L586] int retValue_acc ; [L589] retValue_acc = 1 [L590] return (retValue_acc); [L678] RET, EXPR valid_product() [L678] tmp = valid_product() [L680] COND TRUE \read(tmp) [L682] FCALL setup() [L683] CALL runTest() [L665] CALL test() [L867] int splverifierCounter ; [L868] int tmp ; [L869] int tmp___0 ; [L870] int tmp___1 ; [L871] int tmp___2 ; [L874] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L876] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L878] COND TRUE splverifierCounter < 4 [L884] tmp = __VERIFIER_nondet_int() [L886] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L888] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L486] COND TRUE waterLevel < 2 [L487] waterLevel = waterLevel + 1 [L888] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L894] tmp___0 = __VERIFIER_nondet_int() [L896] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L904] tmp___2 = __VERIFIER_nondet_int() [L906] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=-3, tmp___2=-2, waterLevel=2] [L919] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L703] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L710] COND TRUE \read(systemActive) [L712] CALL processEnvironment() [L732] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L735] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L750] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L712] RET processEnvironment() [L718] CALL __utac_acc__Specification3_spec__1() [L55] int tmp ; [L56] int tmp___0 ; [L57] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L61] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L507] int retValue_acc ; [L510] retValue_acc = methaneLevelCritical [L511] return (retValue_acc); [L61] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L61] tmp = isMethaneLevelCritical() [L63] COND FALSE !(\read(tmp)) [L67] CALL, EXPR getWaterLevel() [L539] int retValue_acc ; [L542] retValue_acc = waterLevel [L543] return (retValue_acc); [L67] RET, EXPR getWaterLevel() [L67] tmp___0 = getWaterLevel() [L69] COND TRUE tmp___0 == 2 [L71] CALL, EXPR isPumpRunning() [L802] int retValue_acc ; [L805] retValue_acc = pumpRunning [L806] return (retValue_acc); [L71] RET, EXPR isPumpRunning() [L71] tmp___1 = isPumpRunning() [L73] COND FALSE !(\read(tmp___1)) [L77] CALL __automaton_fail() [L92] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 227 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 224 mSDsluCounter, 465 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 253 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 258 IncrementalHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 212 mSDtfsCounter, 258 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=5, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 33 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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! [2022-11-19 07:32:44,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb52d9d-1ca4-4bf4-8bf3-4dc6413abcfc/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE