./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh --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 d2302423425d09a02191583f4a443e0b9b2d72b45fd4f1bcb2e2d3ac85995a3d --- 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-2329fc7 [2022-12-14 12:56:01,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:56:01,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:56:01,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:56:01,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:56:01,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:56:01,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:56:01,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:56:01,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:56:01,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:56:01,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:56:01,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:56:01,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:56:01,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:56:01,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:56:01,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:56:01,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:56:01,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:56:01,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:56:01,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:56:01,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:56:01,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:56:01,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:56:01,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:56:01,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:56:01,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:56:01,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:56:01,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:56:01,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:56:01,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:56:01,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:56:01,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:56:01,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:56:01,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:56:01,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:56:01,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:56:01,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:56:01,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:56:01,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:56:01,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:56:01,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:56:01,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:56:01,271 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:56:01,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:56:01,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:56:01,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:56:01,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:56:01,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:56:01,273 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:56:01,273 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:56:01,274 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:56:01,274 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:56:01,274 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:56:01,274 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:56:01,274 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:56:01,274 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:56:01,275 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:56:01,275 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:56:01,275 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:56:01,275 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:56:01,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:56:01,276 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:56:01,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:56:01,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:56:01,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:56:01,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:56:01,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:56:01,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:56:01,277 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:56:01,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:56:01,278 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:56:01,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:56:01,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:56:01,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:56:01,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:56:01,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:56:01,279 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:56:01,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:56:01,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:56:01,279 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:56:01,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:56:01,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:56:01,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:56:01,280 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_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2302423425d09a02191583f4a443e0b9b2d72b45fd4f1bcb2e2d3ac85995a3d [2022-12-14 12:56:01,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:56:01,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:56:01,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:56:01,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:56:01,496 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:56:01,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/minepump_spec2_product15.cil.c [2022-12-14 12:56:04,166 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:56:04,334 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:56:04,335 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/sv-benchmarks/c/product-lines/minepump_spec2_product15.cil.c [2022-12-14 12:56:04,343 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/data/299a84950/06a5595f690a4edcb83772785f4a1715/FLAG2f5810a96 [2022-12-14 12:56:04,353 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/data/299a84950/06a5595f690a4edcb83772785f4a1715 [2022-12-14 12:56:04,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:56:04,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:56:04,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:56:04,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:56:04,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:56:04,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@361602ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04, skipping insertion in model container [2022-12-14 12:56:04,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:56:04,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:56:04,520 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/sv-benchmarks/c/product-lines/minepump_spec2_product15.cil.c[5831,5844] [2022-12-14 12:56:04,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:56:04,572 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:56:04,589 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/sv-benchmarks/c/product-lines/minepump_spec2_product15.cil.c[5831,5844] [2022-12-14 12:56:04,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:56:04,627 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:56:04,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04 WrapperNode [2022-12-14 12:56:04,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:56:04,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:56:04,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:56:04,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:56:04,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,661 INFO L138 Inliner]: procedures = 53, calls = 97, calls flagged for inlining = 19, calls inlined = 15, statements flattened = 147 [2022-12-14 12:56:04,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:56:04,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:56:04,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:56:04,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:56:04,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,678 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:56:04,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:56:04,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:56:04,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:56:04,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (1/1) ... [2022-12-14 12:56:04,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:56:04,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:56:04,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:56:04,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:56:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:56:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 12:56:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 12:56:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-12-14 12:56:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-12-14 12:56:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 12:56:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 12:56:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-12-14 12:56:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-12-14 12:56:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-12-14 12:56:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-12-14 12:56:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-12-14 12:56:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-12-14 12:56:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-12-14 12:56:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-12-14 12:56:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:56:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-12-14 12:56:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-12-14 12:56:04,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:56:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:56:04,804 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:56:04,806 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:56:04,990 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:56:05,045 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:56:05,046 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 12:56:05,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:56:05 BoogieIcfgContainer [2022-12-14 12:56:05,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:56:05,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:56:05,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:56:05,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:56:05,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:56:04" (1/3) ... [2022-12-14 12:56:05,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96f61a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:56:05, skipping insertion in model container [2022-12-14 12:56:05,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:04" (2/3) ... [2022-12-14 12:56:05,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96f61a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:56:05, skipping insertion in model container [2022-12-14 12:56:05,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:56:05" (3/3) ... [2022-12-14 12:56:05,055 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product15.cil.c [2022-12-14 12:56:05,069 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:56:05,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:56:05,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:56:05,110 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;@30ea8dd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:56:05,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:56:05,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 40 states have (on average 1.425) internal successors, (57), 47 states have internal predecessors, (57), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 12:56:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 12:56:05,120 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:05,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:56:05,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:56:05,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:05,125 INFO L85 PathProgramCache]: Analyzing trace with hash -407510396, now seen corresponding path program 1 times [2022-12-14 12:56:05,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:05,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297773815] [2022-12-14 12:56:05,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:05,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:05,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:05,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297773815] [2022-12-14 12:56:05,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297773815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:56:05,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:56:05,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:56:05,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999599864] [2022-12-14 12:56:05,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:56:05,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:56:05,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:56:05,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:56:05,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:56:05,306 INFO L87 Difference]: Start difference. First operand has 63 states, 40 states have (on average 1.425) internal successors, (57), 47 states have internal predecessors, (57), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) 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) [2022-12-14 12:56:05,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:56:05,366 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2022-12-14 12:56:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:56:05,368 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 [2022-12-14 12:56:05,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:56:05,376 INFO L225 Difference]: With dead ends: 124 [2022-12-14 12:56:05,376 INFO L226 Difference]: Without dead ends: 58 [2022-12-14 12:56:05,378 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 [2022-12-14 12:56:05,381 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:56:05,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:56:05,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-14 12:56:05,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-12-14 12:56:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 43 states have internal predecessors, (49), 13 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 12:56:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2022-12-14 12:56:05,418 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 17 [2022-12-14 12:56:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:56:05,418 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2022-12-14 12:56:05,419 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) [2022-12-14 12:56:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2022-12-14 12:56:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 12:56:05,420 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:05,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:56:05,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:56:05,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:56:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:05,421 INFO L85 PathProgramCache]: Analyzing trace with hash -724538907, now seen corresponding path program 1 times [2022-12-14 12:56:05,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:05,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248199099] [2022-12-14 12:56:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:05,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:05,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:05,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248199099] [2022-12-14 12:56:05,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248199099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:56:05,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:56:05,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:56:05,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135879487] [2022-12-14 12:56:05,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:56:05,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:56:05,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:56:05,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:56:05,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:56:05,526 INFO L87 Difference]: Start difference. First operand 58 states and 74 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) [2022-12-14 12:56:05,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:56:05,560 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2022-12-14 12:56:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:56:05,561 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 [2022-12-14 12:56:05,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:56:05,562 INFO L225 Difference]: With dead ends: 88 [2022-12-14 12:56:05,562 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 12:56:05,563 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 [2022-12-14 12:56:05,563 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:56:05,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 85 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:56:05,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 12:56:05,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-12-14 12:56:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.34375) internal successors, (43), 38 states have internal predecessors, (43), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 12:56:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2022-12-14 12:56:05,570 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 18 [2022-12-14 12:56:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:56:05,570 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2022-12-14 12:56:05,570 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) [2022-12-14 12:56:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2022-12-14 12:56:05,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 12:56:05,571 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:05,571 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] [2022-12-14 12:56:05,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:56:05,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:56:05,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:05,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1959830209, now seen corresponding path program 1 times [2022-12-14 12:56:05,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:05,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320732719] [2022-12-14 12:56:05,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:05,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:05,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:05,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320732719] [2022-12-14 12:56:05,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320732719] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:56:05,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:56:05,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:56:05,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463387790] [2022-12-14 12:56:05,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:56:05,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:56:05,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:56:05,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:56:05,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:56:05,639 INFO L87 Difference]: Start difference. First operand 50 states and 63 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, (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) [2022-12-14 12:56:05,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:56:05,687 INFO L93 Difference]: Finished difference Result 146 states and 186 transitions. [2022-12-14 12:56:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:56:05,687 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, (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 21 [2022-12-14 12:56:05,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:56:05,689 INFO L225 Difference]: With dead ends: 146 [2022-12-14 12:56:05,689 INFO L226 Difference]: Without dead ends: 98 [2022-12-14 12:56:05,689 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 [2022-12-14 12:56:05,690 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 50 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:56:05,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 118 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:56:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-14 12:56:05,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2022-12-14 12:56:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 60 states have (on average 1.35) internal successors, (81), 71 states have internal predecessors, (81), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (20), 15 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-14 12:56:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2022-12-14 12:56:05,704 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 21 [2022-12-14 12:56:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:56:05,704 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2022-12-14 12:56:05,704 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, (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) [2022-12-14 12:56:05,705 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2022-12-14 12:56:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 12:56:05,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:05,705 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] [2022-12-14 12:56:05,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:56:05,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:56:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash -932752362, now seen corresponding path program 1 times [2022-12-14 12:56:05,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:05,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575141569] [2022-12-14 12:56:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:05,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:05,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:05,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575141569] [2022-12-14 12:56:05,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575141569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:56:05,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:56:05,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 12:56:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779127603] [2022-12-14 12:56:05,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:56:05,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:56:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:56:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:56:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:56:05,790 INFO L87 Difference]: Start difference. First operand 95 states and 121 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 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) [2022-12-14 12:56:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:56:05,899 INFO L93 Difference]: Finished difference Result 277 states and 356 transitions. [2022-12-14 12:56:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:56:05,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 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 24 [2022-12-14 12:56:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:56:05,902 INFO L225 Difference]: With dead ends: 277 [2022-12-14 12:56:05,902 INFO L226 Difference]: Without dead ends: 184 [2022-12-14 12:56:05,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-14 12:56:05,904 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 39 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:56:05,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 261 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:56:05,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-14 12:56:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 176. [2022-12-14 12:56:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 111 states have (on average 1.3243243243243243) internal successors, (147), 130 states have internal predecessors, (147), 38 states have call successors, (38), 26 states have call predecessors, (38), 26 states have return successors, (38), 28 states have call predecessors, (38), 38 states have call successors, (38) [2022-12-14 12:56:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 223 transitions. [2022-12-14 12:56:05,926 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 223 transitions. Word has length 24 [2022-12-14 12:56:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:56:05,927 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 223 transitions. [2022-12-14 12:56:05,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 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) [2022-12-14 12:56:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 223 transitions. [2022-12-14 12:56:05,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 12:56:05,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:05,928 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] [2022-12-14 12:56:05,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:56:05,928 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:56:05,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1231686281, now seen corresponding path program 1 times [2022-12-14 12:56:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:05,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057781363] [2022-12-14 12:56:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:05,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:05,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:05,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057781363] [2022-12-14 12:56:05,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057781363] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:56:05,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:56:05,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:56:05,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516356562] [2022-12-14 12:56:05,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:56:05,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:56:05,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:56:05,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:56:05,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:56:05,994 INFO L87 Difference]: Start difference. First operand 176 states and 223 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-12-14 12:56:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:56:06,042 INFO L93 Difference]: Finished difference Result 269 states and 346 transitions. [2022-12-14 12:56:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:56:06,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 27 [2022-12-14 12:56:06,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:56:06,044 INFO L225 Difference]: With dead ends: 269 [2022-12-14 12:56:06,044 INFO L226 Difference]: Without dead ends: 267 [2022-12-14 12:56:06,045 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 [2022-12-14 12:56:06,046 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 38 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:56:06,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 108 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:56:06,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-12-14 12:56:06,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-12-14 12:56:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 168 states have (on average 1.3273809523809523) internal successors, (223), 197 states have internal predecessors, (223), 58 states have call successors, (58), 40 states have call predecessors, (58), 40 states have return successors, (62), 43 states have call predecessors, (62), 58 states have call successors, (62) [2022-12-14 12:56:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 343 transitions. [2022-12-14 12:56:06,068 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 343 transitions. Word has length 27 [2022-12-14 12:56:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:56:06,069 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 343 transitions. [2022-12-14 12:56:06,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-12-14 12:56:06,069 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 343 transitions. [2022-12-14 12:56:06,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-14 12:56:06,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:06,071 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 12:56:06,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:56:06,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:56:06,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:06,072 INFO L85 PathProgramCache]: Analyzing trace with hash -529264641, now seen corresponding path program 1 times [2022-12-14 12:56:06,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:06,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038449873] [2022-12-14 12:56:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:06,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 12:56:06,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:06,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038449873] [2022-12-14 12:56:06,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038449873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:56:06,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:56:06,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 12:56:06,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484408152] [2022-12-14 12:56:06,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:56:06,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:56:06,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:56:06,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:56:06,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:56:06,250 INFO L87 Difference]: Start difference. First operand 267 states and 343 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 12:56:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:56:06,352 INFO L93 Difference]: Finished difference Result 393 states and 505 transitions. [2022-12-14 12:56:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:56:06,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2022-12-14 12:56:06,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:56:06,353 INFO L225 Difference]: With dead ends: 393 [2022-12-14 12:56:06,353 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 12:56:06,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:56:06,356 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 35 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:56:06,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 66 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:56:06,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 12:56:06,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 12:56:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:56:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 12:56:06,358 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2022-12-14 12:56:06,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:56:06,358 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 12:56:06,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 12:56:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 12:56:06,359 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 12:56:06,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 12:56:06,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:56:06,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 12:56:06,770 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 145 152) no Hoare annotation was computed. [2022-12-14 12:56:06,771 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 145 152) the Hoare annotation is: true [2022-12-14 12:56:06,771 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 322 333) the Hoare annotation is: true [2022-12-14 12:56:06,771 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 322 333) no Hoare annotation was computed. [2022-12-14 12:56:06,771 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 829 858) no Hoare annotation was computed. [2022-12-14 12:56:06,771 INFO L902 garLoopResultBuilder]: At program point L854(lines 829 858) the Hoare annotation is: true [2022-12-14 12:56:06,771 INFO L899 garLoopResultBuilder]: For program point L850(line 850) no Hoare annotation was computed. [2022-12-14 12:56:06,771 INFO L899 garLoopResultBuilder]: For program point L843(lines 843 847) no Hoare annotation was computed. [2022-12-14 12:56:06,771 INFO L902 garLoopResultBuilder]: At program point L843-1(lines 843 847) the Hoare annotation is: true [2022-12-14 12:56:06,772 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 829 858) the Hoare annotation is: true [2022-12-14 12:56:06,772 INFO L902 garLoopResultBuilder]: At program point L839-2(lines 839 853) the Hoare annotation is: true [2022-12-14 12:56:06,772 INFO L902 garLoopResultBuilder]: At program point L835(line 835) the Hoare annotation is: true [2022-12-14 12:56:06,772 INFO L899 garLoopResultBuilder]: For program point L835-1(line 835) no Hoare annotation was computed. [2022-12-14 12:56:06,772 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 334 342) the Hoare annotation is: true [2022-12-14 12:56:06,772 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 334 342) no Hoare annotation was computed. [2022-12-14 12:56:06,772 INFO L895 garLoopResultBuilder]: At program point L114(line 114) the Hoare annotation is: (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (<= |old(~pumpRunning~0)| 0)) (not (<= 0 |old(~pumpRunning~0)|)) (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (<= 0 ~pumpRunning~0))) [2022-12-14 12:56:06,773 INFO L895 garLoopResultBuilder]: At program point L114-1(lines 95 119) the Hoare annotation is: (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (<= |old(~pumpRunning~0)| 0)) (not (<= 0 |old(~pumpRunning~0)|)) (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (<= 0 ~pumpRunning~0))) [2022-12-14 12:56:06,773 INFO L895 garLoopResultBuilder]: At program point L804(line 804) the Hoare annotation is: (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (<= |old(~pumpRunning~0)| 0)) (not (<= 0 |old(~pumpRunning~0)|)) (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (<= 0 ~pumpRunning~0))) [2022-12-14 12:56:06,773 INFO L899 garLoopResultBuilder]: For program point L804-1(line 804) no Hoare annotation was computed. [2022-12-14 12:56:06,773 INFO L899 garLoopResultBuilder]: For program point L74-1(lines 74 80) no Hoare annotation was computed. [2022-12-14 12:56:06,773 INFO L899 garLoopResultBuilder]: For program point L103(lines 103 111) no Hoare annotation was computed. [2022-12-14 12:56:06,773 INFO L899 garLoopResultBuilder]: For program point L99(lines 99 116) no Hoare annotation was computed. [2022-12-14 12:56:06,773 INFO L895 garLoopResultBuilder]: At program point L380(line 380) the Hoare annotation is: (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (<= |old(~pumpRunning~0)| 0)) (not (<= 0 |old(~pumpRunning~0)|))) [2022-12-14 12:56:06,773 INFO L899 garLoopResultBuilder]: For program point L810(lines 810 820) no Hoare annotation was computed. [2022-12-14 12:56:06,774 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 63 86) the Hoare annotation is: (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (<= |old(~pumpRunning~0)| 0)) (not (<= 0 |old(~pumpRunning~0)|)) (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (<= 0 ~pumpRunning~0))) [2022-12-14 12:56:06,774 INFO L895 garLoopResultBuilder]: At program point L806(lines 806 823) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (<= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 .cse1 .cse2 (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (<= 0 ~pumpRunning~0))) (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~6#1| 0)))) [2022-12-14 12:56:06,774 INFO L895 garLoopResultBuilder]: At program point L806-1(lines 798 826) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (<= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 .cse1 .cse2 (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (<= 0 ~pumpRunning~0))) (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~6#1| 0)))) [2022-12-14 12:56:06,774 INFO L899 garLoopResultBuilder]: For program point L67-1(lines 66 85) no Hoare annotation was computed. [2022-12-14 12:56:06,774 INFO L895 garLoopResultBuilder]: At program point L109(line 109) the Hoare annotation is: (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (<= |old(~pumpRunning~0)| 0)) (not (<= 0 |old(~pumpRunning~0)|))) [2022-12-14 12:56:06,774 INFO L899 garLoopResultBuilder]: For program point L811(lines 811 817) no Hoare annotation was computed. [2022-12-14 12:56:06,774 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 63 86) no Hoare annotation was computed. [2022-12-14 12:56:06,775 INFO L895 garLoopResultBuilder]: At program point L105(line 105) the Hoare annotation is: (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (<= |old(~pumpRunning~0)| 0)) (not (<= 0 |old(~pumpRunning~0)|))) [2022-12-14 12:56:06,775 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 380) no Hoare annotation was computed. [2022-12-14 12:56:06,775 INFO L895 garLoopResultBuilder]: At program point L101(line 101) the Hoare annotation is: (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (<= |old(~pumpRunning~0)| 0)) (not (<= 0 |old(~pumpRunning~0)|))) [2022-12-14 12:56:06,775 INFO L899 garLoopResultBuilder]: For program point L101-1(line 101) no Hoare annotation was computed. [2022-12-14 12:56:06,775 INFO L899 garLoopResultBuilder]: For program point L258-1(lines 258 264) no Hoare annotation was computed. [2022-12-14 12:56:06,775 INFO L895 garLoopResultBuilder]: At program point L283(lines 238 285) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 0 ~pumpRunning~0)) [2022-12-14 12:56:06,775 INFO L895 garLoopResultBuilder]: At program point L250(line 250) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 0 ~pumpRunning~0)) [2022-12-14 12:56:06,775 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 219) no Hoare annotation was computed. [2022-12-14 12:56:06,776 INFO L895 garLoopResultBuilder]: At program point L213-1(lines 213 219) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 0 ~pumpRunning~0)) [2022-12-14 12:56:06,776 INFO L895 garLoopResultBuilder]: At program point L911(lines 911 918) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) (<= 0 ~pumpRunning~0)) [2022-12-14 12:56:06,776 INFO L902 garLoopResultBuilder]: At program point L911-2(lines 911 918) the Hoare annotation is: true [2022-12-14 12:56:06,776 INFO L899 garLoopResultBuilder]: For program point L239(lines 238 285) no Hoare annotation was computed. [2022-12-14 12:56:06,776 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 281) no Hoare annotation was computed. [2022-12-14 12:56:06,776 INFO L895 garLoopResultBuilder]: At program point L260(line 260) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 0 ~pumpRunning~0)) [2022-12-14 12:56:06,776 INFO L902 garLoopResultBuilder]: At program point L289(lines 228 293) the Hoare annotation is: true [2022-12-14 12:56:06,776 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 12:56:06,776 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 254) no Hoare annotation was computed. [2022-12-14 12:56:06,777 INFO L899 garLoopResultBuilder]: For program point L248-1(lines 248 254) no Hoare annotation was computed. [2022-12-14 12:56:06,777 INFO L895 garLoopResultBuilder]: At program point L215(line 215) the Hoare annotation is: false [2022-12-14 12:56:06,777 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2022-12-14 12:56:06,777 INFO L895 garLoopResultBuilder]: At program point L286(lines 237 287) the Hoare annotation is: false [2022-12-14 12:56:06,777 INFO L899 garLoopResultBuilder]: For program point L274(lines 274 280) no Hoare annotation was computed. [2022-12-14 12:56:06,777 INFO L895 garLoopResultBuilder]: At program point L274-2(lines 268 281) the Hoare annotation is: (and (<= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 0 ~pumpRunning~0)) [2022-12-14 12:56:06,777 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 264) no Hoare annotation was computed. [2022-12-14 12:56:06,777 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 310 321) no Hoare annotation was computed. [2022-12-14 12:56:06,778 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 310 321) the Hoare annotation is: true [2022-12-14 12:56:06,778 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 87 93) no Hoare annotation was computed. [2022-12-14 12:56:06,778 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryFINAL(lines 87 93) the Hoare annotation is: true [2022-12-14 12:56:06,778 INFO L902 garLoopResultBuilder]: At program point L158(line 158) the Hoare annotation is: true [2022-12-14 12:56:06,778 INFO L899 garLoopResultBuilder]: For program point L158-1(line 158) no Hoare annotation was computed. [2022-12-14 12:56:06,778 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 153 163) no Hoare annotation was computed. [2022-12-14 12:56:06,778 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 153 163) the Hoare annotation is: true [2022-12-14 12:56:06,781 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-14 12:56:06,784 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 12:56:06,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 12:56:06 BoogieIcfgContainer [2022-12-14 12:56:06,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 12:56:06,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 12:56:06,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 12:56:06,796 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 12:56:06,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:56:05" (3/4) ... [2022-12-14 12:56:06,799 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 12:56:06,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-12-14 12:56:06,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-12-14 12:56:06,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-12-14 12:56:06,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-12-14 12:56:06,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-12-14 12:56:06,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-12-14 12:56:06,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-12-14 12:56:06,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-12-14 12:56:06,807 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2022-12-14 12:56:06,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-12-14 12:56:06,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-14 12:56:06,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 12:56:06,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 12:56:06,827 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) || ((pumpRunning <= 0 && methAndRunningLastTime == 0) && 0 <= pumpRunning) [2022-12-14 12:56:06,827 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) || ((pumpRunning <= 0 && methAndRunningLastTime == 0) && 0 <= pumpRunning) [2022-12-14 12:56:06,827 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) || ((pumpRunning <= 0 && methAndRunningLastTime == 0) && 0 <= pumpRunning)) && ((((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(methaneLevelCritical == 0)) || !(0 <= \old(pumpRunning))) || tmp == 0) [2022-12-14 12:56:06,828 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) || ((pumpRunning <= 0 && methAndRunningLastTime == 0) && 0 <= pumpRunning)) && ((((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(methaneLevelCritical == 0)) || !(0 <= \old(pumpRunning))) || tmp == 0) [2022-12-14 12:56:06,828 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning)) [2022-12-14 12:56:06,841 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 12:56:06,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 12:56:06,841 INFO L158 Benchmark]: Toolchain (without parser) took 2484.91ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 140.1MB in the beginning and 106.9MB in the end (delta: 33.3MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. [2022-12-14 12:56:06,842 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 96.5MB. Free memory was 45.6MB in the beginning and 45.4MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:56:06,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.73ms. Allocated memory is still 178.3MB. Free memory was 139.8MB in the beginning and 121.9MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 12:56:06,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.37ms. Allocated memory is still 178.3MB. Free memory was 121.3MB in the beginning and 119.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:56:06,842 INFO L158 Benchmark]: Boogie Preprocessor took 18.92ms. Allocated memory is still 178.3MB. Free memory was 119.8MB in the beginning and 118.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:56:06,842 INFO L158 Benchmark]: RCFGBuilder took 366.73ms. Allocated memory is still 178.3MB. Free memory was 118.3MB in the beginning and 98.2MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 12:56:06,842 INFO L158 Benchmark]: TraceAbstraction took 1745.71ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 97.9MB in the beginning and 112.1MB in the end (delta: -14.2MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2022-12-14 12:56:06,843 INFO L158 Benchmark]: Witness Printer took 45.30ms. Allocated memory is still 213.9MB. Free memory was 112.1MB in the beginning and 106.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 12:56:06,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 96.5MB. Free memory was 45.6MB in the beginning and 45.4MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.73ms. Allocated memory is still 178.3MB. Free memory was 139.8MB in the beginning and 121.9MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.37ms. Allocated memory is still 178.3MB. Free memory was 121.3MB in the beginning and 119.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.92ms. Allocated memory is still 178.3MB. Free memory was 119.8MB in the beginning and 118.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 366.73ms. Allocated memory is still 178.3MB. Free memory was 118.3MB in the beginning and 98.2MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1745.71ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 97.9MB in the beginning and 112.1MB in the end (delta: -14.2MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * Witness Printer took 45.30ms. Allocated memory is still 213.9MB. Free memory was 112.1MB in the beginning and 106.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 380]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 184 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 703 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 377 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 258 IncrementalHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 326 mSDtfsCounter, 258 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=267occurred in iteration=5, InterpolantAutomatonStates: 24, 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, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 320 PreInvPairs, 357 NumberOfFragments, 330 HoareAnnotationTreeSize, 320 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 1520 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 18/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 213]: Loop Invariant Derived loop invariant: ((pumpRunning <= 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) && 0 <= pumpRunning - InvariantResult [Line: 95]: Loop Invariant Derived loop invariant: ((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) || ((pumpRunning <= 0 && methAndRunningLastTime == 0) && 0 <= pumpRunning) - InvariantResult [Line: 806]: Loop Invariant Derived loop invariant: (((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) || ((pumpRunning <= 0 && methAndRunningLastTime == 0) && 0 <= pumpRunning)) && ((((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(methaneLevelCritical == 0)) || !(0 <= \old(pumpRunning))) || tmp == 0) - InvariantResult [Line: 798]: Loop Invariant Derived loop invariant: (((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) || ((pumpRunning <= 0 && methAndRunningLastTime == 0) && 0 <= pumpRunning)) && ((((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(methaneLevelCritical == 0)) || !(0 <= \old(pumpRunning))) || tmp == 0) - InvariantResult [Line: 911]: Loop Invariant Derived loop invariant: (((pumpRunning <= 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && 1 == systemActive) && 0 <= pumpRunning - InvariantResult [Line: 829]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 839]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 380]: Loop Invariant Derived loop invariant: (!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning)) - InvariantResult [Line: 238]: Loop Invariant Derived loop invariant: ((pumpRunning <= 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) && 0 <= pumpRunning - InvariantResult [Line: 911]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: ((!(\old(methAndRunningLastTime) == 0) || !(\old(pumpRunning) <= 0)) || !(0 <= \old(pumpRunning))) || ((pumpRunning <= 0 && methAndRunningLastTime == 0) && 0 <= pumpRunning) - InvariantResult [Line: 237]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-12-14 12:56:06,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a02f7a-db59-417c-a195-85b72e3028ab/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE