./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1741a5d4e19b6faba6ff51056891b76c8b4c0acd4f550f71706571820842dcfa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:06:31,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:06:31,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:06:31,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:06:31,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:06:31,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:06:31,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:06:31,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:06:31,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:06:31,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:06:31,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:06:31,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:06:31,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:06:31,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:06:31,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:06:31,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:06:31,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:06:31,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:06:31,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:06:31,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:06:31,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:06:31,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:06:31,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:06:31,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:06:31,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:06:31,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:06:31,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:06:31,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:06:31,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:06:31,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:06:31,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:06:31,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:06:31,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:06:31,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:06:31,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:06:31,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:06:31,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:06:31,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:06:31,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:06:31,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:06:31,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:06:31,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:06:31,502 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:06:31,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:06:31,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:06:31,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:06:31,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:06:31,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:06:31,504 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:06:31,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:06:31,504 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:06:31,504 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:06:31,505 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:06:31,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:06:31,505 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:06:31,505 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:06:31,506 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:06:31,506 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:06:31,506 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:06:31,506 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:06:31,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:06:31,507 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:06:31,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:06:31,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:06:31,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:06:31,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:06:31,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:06:31,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:06:31,509 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:06:31,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:06:31,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:06:31,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:06:31,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:06:31,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:06:31,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:31,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:06:31,510 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:06:31,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:06:31,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:06:31,511 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:06:31,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:06:31,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:06:31,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:06:31,512 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_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1741a5d4e19b6faba6ff51056891b76c8b4c0acd4f550f71706571820842dcfa [2022-11-03 02:06:31,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:06:31,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:06:31,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:06:31,789 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:06:31,790 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:06:31,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c [2022-11-03 02:06:31,882 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/data/0a3bdc465/ce9654bd277048e296959fed59c89cf2/FLAG98cd24f4c [2022-11-03 02:06:32,503 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:06:32,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c [2022-11-03 02:06:32,521 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/data/0a3bdc465/ce9654bd277048e296959fed59c89cf2/FLAG98cd24f4c [2022-11-03 02:06:32,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/data/0a3bdc465/ce9654bd277048e296959fed59c89cf2 [2022-11-03 02:06:32,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:06:32,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:06:32,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:32,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:06:32,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:06:32,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:32" (1/1) ... [2022-11-03 02:06:32,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b85b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:32, skipping insertion in model container [2022-11-03 02:06:32,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:32" (1/1) ... [2022-11-03 02:06:32,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:06:32,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:06:33,212 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c[6887,6900] [2022-11-03 02:06:33,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:33,355 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:06:33,395 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c[6887,6900] [2022-11-03 02:06:33,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:33,497 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:06:33,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33 WrapperNode [2022-11-03 02:06:33,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:33,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:33,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:06:33,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:06:33,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (1/1) ... [2022-11-03 02:06:33,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (1/1) ... [2022-11-03 02:06:33,588 INFO L138 Inliner]: procedures = 57, calls = 160, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 286 [2022-11-03 02:06:33,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:33,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:06:33,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:06:33,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:06:33,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (1/1) ... [2022-11-03 02:06:33,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (1/1) ... [2022-11-03 02:06:33,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (1/1) ... [2022-11-03 02:06:33,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (1/1) ... [2022-11-03 02:06:33,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (1/1) ... [2022-11-03 02:06:33,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (1/1) ... [2022-11-03 02:06:33,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (1/1) ... [2022-11-03 02:06:33,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (1/1) ... [2022-11-03 02:06:33,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:06:33,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:06:33,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:06:33,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:06:33,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (1/1) ... [2022-11-03 02:06:33,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:33,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:33,716 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:06:33,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:06:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:06:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-03 02:06:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-03 02:06:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 02:06:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 02:06:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 02:06:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 02:06:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-03 02:06:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-03 02:06:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-03 02:06:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-03 02:06:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2022-11-03 02:06:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2022-11-03 02:06:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-03 02:06:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-03 02:06:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:06:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-03 02:06:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-03 02:06:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:06:33,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:06:33,901 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:06:33,903 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:06:34,320 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:06:34,431 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:06:34,432 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:06:34,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:34 BoogieIcfgContainer [2022-11-03 02:06:34,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:06:34,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:06:34,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:06:34,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:06:34,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:06:32" (1/3) ... [2022-11-03 02:06:34,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@945e6dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:34, skipping insertion in model container [2022-11-03 02:06:34,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:33" (2/3) ... [2022-11-03 02:06:34,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@945e6dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:34, skipping insertion in model container [2022-11-03 02:06:34,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:34" (3/3) ... [2022-11-03 02:06:34,444 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product55.cil.c [2022-11-03 02:06:34,464 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:06:34,464 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:06:34,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:06:34,524 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;@895c17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:06:34,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:06:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 53 states have internal predecessors, (62), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 02:06:34,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 02:06:34,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:34,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:34,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:34,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:34,546 INFO L85 PathProgramCache]: Analyzing trace with hash 224364336, now seen corresponding path program 1 times [2022-11-03 02:06:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:34,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402865735] [2022-11-03 02:06:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:34,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:34,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:34,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402865735] [2022-11-03 02:06:34,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402865735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:34,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:34,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:06:34,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193209644] [2022-11-03 02:06:34,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:34,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:06:34,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:34,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:06:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:06:34,861 INFO L87 Difference]: Start difference. First operand has 67 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 53 states have internal predecessors, (62), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:34,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:34,959 INFO L93 Difference]: Finished difference Result 132 states and 185 transitions. [2022-11-03 02:06:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:06:34,965 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 02:06:34,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:34,975 INFO L225 Difference]: With dead ends: 132 [2022-11-03 02:06:34,976 INFO L226 Difference]: Without dead ends: 62 [2022-11-03 02:06:34,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:06:34,983 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:34,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:06:35,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-03 02:06:35,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-03 02:06:35,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 49 states have internal predecessors, (54), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 02:06:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2022-11-03 02:06:35,031 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 83 transitions. Word has length 12 [2022-11-03 02:06:35,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:35,032 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 83 transitions. [2022-11-03 02:06:35,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:35,032 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2022-11-03 02:06:35,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:06:35,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:35,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:35,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:06:35,035 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1225034524, now seen corresponding path program 1 times [2022-11-03 02:06:35,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:35,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5709644] [2022-11-03 02:06:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:35,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:35,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:35,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5709644] [2022-11-03 02:06:35,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5709644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:35,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:35,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:35,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589975125] [2022-11-03 02:06:35,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:35,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:35,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:35,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:35,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:35,146 INFO L87 Difference]: Start difference. First operand 62 states and 83 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:35,195 INFO L93 Difference]: Finished difference Result 96 states and 128 transitions. [2022-11-03 02:06:35,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:35,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:06:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:35,198 INFO L225 Difference]: With dead ends: 96 [2022-11-03 02:06:35,198 INFO L226 Difference]: Without dead ends: 54 [2022-11-03 02:06:35,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:35,200 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 14 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 97 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 [2022-11-03 02:06:35,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 97 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:06:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-03 02:06:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-03 02:06:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.411764705882353) internal successors, (48), 44 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 7 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 02:06:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-11-03 02:06:35,211 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 13 [2022-11-03 02:06:35,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:35,212 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-03 02:06:35,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:35,212 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2022-11-03 02:06:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:06:35,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:35,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:35,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:06:35,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2113340253, now seen corresponding path program 1 times [2022-11-03 02:06:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:35,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619863639] [2022-11-03 02:06:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:35,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:35,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:35,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619863639] [2022-11-03 02:06:35,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619863639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:35,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:35,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:35,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065019091] [2022-11-03 02:06:35,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:35,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:06:35,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:35,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:06:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:06:35,389 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:35,598 INFO L93 Difference]: Finished difference Result 149 states and 204 transitions. [2022-11-03 02:06:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:06:35,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 02:06:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:35,601 INFO L225 Difference]: With dead ends: 149 [2022-11-03 02:06:35,601 INFO L226 Difference]: Without dead ends: 97 [2022-11-03 02:06:35,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:06:35,604 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 86 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:35,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 142 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:06:35,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-03 02:06:35,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2022-11-03 02:06:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 65 states have internal predecessors, (73), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (17), 10 states have call predecessors, (17), 16 states have call successors, (17) [2022-11-03 02:06:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2022-11-03 02:06:35,624 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 16 [2022-11-03 02:06:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:35,624 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2022-11-03 02:06:35,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2022-11-03 02:06:35,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:06:35,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:35,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:35,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:06:35,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:35,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:35,628 INFO L85 PathProgramCache]: Analyzing trace with hash -325721561, now seen corresponding path program 1 times [2022-11-03 02:06:35,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:35,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87032980] [2022-11-03 02:06:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:35,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:35,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:35,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87032980] [2022-11-03 02:06:35,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87032980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:35,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:35,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:35,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097383632] [2022-11-03 02:06:35,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:35,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:06:35,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:35,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:06:35,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:06:35,797 INFO L87 Difference]: Start difference. First operand 80 states and 106 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:35,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:35,959 INFO L93 Difference]: Finished difference Result 196 states and 272 transitions. [2022-11-03 02:06:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:06:35,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 02:06:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:35,962 INFO L225 Difference]: With dead ends: 196 [2022-11-03 02:06:35,962 INFO L226 Difference]: Without dead ends: 118 [2022-11-03 02:06:35,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:06:35,965 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 41 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:35,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 175 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:06:35,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-03 02:06:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 111. [2022-11-03 02:06:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 87 states have internal predecessors, (100), 18 states have call successors, (18), 16 states have call predecessors, (18), 16 states have return successors, (26), 16 states have call predecessors, (26), 18 states have call successors, (26) [2022-11-03 02:06:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2022-11-03 02:06:35,990 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 19 [2022-11-03 02:06:35,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:35,990 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2022-11-03 02:06:35,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:06:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2022-11-03 02:06:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 02:06:35,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:35,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:35,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:06:35,993 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:35,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash 396284249, now seen corresponding path program 1 times [2022-11-03 02:06:35,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:35,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91496519] [2022-11-03 02:06:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:35,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:36,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:36,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91496519] [2022-11-03 02:06:36,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91496519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:36,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:36,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:36,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870922352] [2022-11-03 02:06:36,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:36,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:36,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:36,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:36,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:36,101 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:06:36,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:36,168 INFO L93 Difference]: Finished difference Result 222 states and 288 transitions. [2022-11-03 02:06:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:36,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-11-03 02:06:36,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:36,171 INFO L225 Difference]: With dead ends: 222 [2022-11-03 02:06:36,171 INFO L226 Difference]: Without dead ends: 85 [2022-11-03 02:06:36,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:36,174 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 26 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:36,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 129 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:06:36,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-03 02:06:36,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-03 02:06:36,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 57 states have (on average 1.263157894736842) internal successors, (72), 65 states have internal predecessors, (72), 14 states have call successors, (14), 13 states have call predecessors, (14), 13 states have return successors, (20), 12 states have call predecessors, (20), 14 states have call successors, (20) [2022-11-03 02:06:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 106 transitions. [2022-11-03 02:06:36,193 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 106 transitions. Word has length 32 [2022-11-03 02:06:36,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:36,194 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 106 transitions. [2022-11-03 02:06:36,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:06:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 106 transitions. [2022-11-03 02:06:36,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:06:36,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:36,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:36,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:06:36,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:36,197 INFO L85 PathProgramCache]: Analyzing trace with hash 586391645, now seen corresponding path program 1 times [2022-11-03 02:06:36,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:36,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377970821] [2022-11-03 02:06:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:36,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:36,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:36,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377970821] [2022-11-03 02:06:36,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377970821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:36,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:36,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:06:36,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094074270] [2022-11-03 02:06:36,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:36,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:06:36,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:36,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:06:36,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:06:36,501 INFO L87 Difference]: Start difference. First operand 85 states and 106 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:06:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:36,627 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2022-11-03 02:06:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:06:36,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-03 02:06:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:36,629 INFO L225 Difference]: With dead ends: 240 [2022-11-03 02:06:36,629 INFO L226 Difference]: Without dead ends: 157 [2022-11-03 02:06:36,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:06:36,631 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 63 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:36,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 219 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:06:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-03 02:06:36,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 128. [2022-11-03 02:06:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 97 states have internal predecessors, (106), 19 states have call successors, (19), 18 states have call predecessors, (19), 21 states have return successors, (28), 19 states have call predecessors, (28), 19 states have call successors, (28) [2022-11-03 02:06:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 153 transitions. [2022-11-03 02:06:36,683 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 153 transitions. Word has length 29 [2022-11-03 02:06:36,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:36,684 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 153 transitions. [2022-11-03 02:06:36,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:06:36,684 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2022-11-03 02:06:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 02:06:36,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:36,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:36,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:06:36,686 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:36,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1824649193, now seen corresponding path program 1 times [2022-11-03 02:06:36,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:36,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900153380] [2022-11-03 02:06:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:36,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:37,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:37,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900153380] [2022-11-03 02:06:37,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900153380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:37,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:37,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:06:37,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810058136] [2022-11-03 02:06:37,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:37,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:06:37,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:37,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:06:37,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:06:37,081 INFO L87 Difference]: Start difference. First operand 128 states and 153 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:06:37,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:37,659 INFO L93 Difference]: Finished difference Result 314 states and 392 transitions. [2022-11-03 02:06:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:06:37,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-11-03 02:06:37,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:37,663 INFO L225 Difference]: With dead ends: 314 [2022-11-03 02:06:37,663 INFO L226 Difference]: Without dead ends: 231 [2022-11-03 02:06:37,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:06:37,665 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 168 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:37,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 327 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:06:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-03 02:06:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 208. [2022-11-03 02:06:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 142 states have (on average 1.2183098591549295) internal successors, (173), 159 states have internal predecessors, (173), 31 states have call successors, (31), 27 states have call predecessors, (31), 34 states have return successors, (46), 32 states have call predecessors, (46), 31 states have call successors, (46) [2022-11-03 02:06:37,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions. [2022-11-03 02:06:37,708 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 32 [2022-11-03 02:06:37,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:37,708 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 250 transitions. [2022-11-03 02:06:37,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:06:37,709 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions. [2022-11-03 02:06:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 02:06:37,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:37,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:37,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:06:37,713 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:37,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:37,714 INFO L85 PathProgramCache]: Analyzing trace with hash -873562763, now seen corresponding path program 1 times [2022-11-03 02:06:37,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:37,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21765661] [2022-11-03 02:06:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:37,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:06:37,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:37,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21765661] [2022-11-03 02:06:37,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21765661] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:06:37,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650117966] [2022-11-03 02:06:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:37,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:06:37,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:37,954 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:06:37,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:06:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:38,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:06:38,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:06:38,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:06:38,492 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:06:38,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650117966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:06:38,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1965127685] [2022-11-03 02:06:38,516 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-03 02:06:38,516 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:06:38,522 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:06:38,528 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:06:38,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:06:56,177 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 320 for LOIs [2022-11-03 02:06:58,780 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 328 for LOIs [2022-11-03 02:06:59,465 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 294 for LOIs [2022-11-03 02:06:59,637 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:08:01,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1965127685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:01,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:08:01,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [7, 5, 5] total 29 [2022-11-03 02:08:01,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071915549] [2022-11-03 02:08:01,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:01,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:08:01,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:01,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:08:01,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:08:01,530 INFO L87 Difference]: Start difference. First operand 208 states and 250 transitions. Second operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:08:24,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:24,851 INFO L93 Difference]: Finished difference Result 340 states and 411 transitions. [2022-11-03 02:08:24,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:08:24,852 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 57 [2022-11-03 02:08:24,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:24,854 INFO L225 Difference]: With dead ends: 340 [2022-11-03 02:08:24,854 INFO L226 Difference]: Without dead ends: 248 [2022-11-03 02:08:24,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 141 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 83.3s TimeCoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 02:08:24,856 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 117 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:24,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 291 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 02:08:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-03 02:08:24,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 239. [2022-11-03 02:08:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 165 states have (on average 1.206060606060606) internal successors, (199), 182 states have internal predecessors, (199), 35 states have call successors, (35), 31 states have call predecessors, (35), 38 states have return successors, (50), 36 states have call predecessors, (50), 35 states have call successors, (50) [2022-11-03 02:08:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 284 transitions. [2022-11-03 02:08:24,950 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 284 transitions. Word has length 57 [2022-11-03 02:08:24,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:24,950 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 284 transitions. [2022-11-03 02:08:24,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:08:24,951 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 284 transitions. [2022-11-03 02:08:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 02:08:24,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:24,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:24,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:08:25,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:25,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:25,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:25,168 INFO L85 PathProgramCache]: Analyzing trace with hash -815979360, now seen corresponding path program 1 times [2022-11-03 02:08:25,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:25,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563935376] [2022-11-03 02:08:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:25,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:08:25,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:25,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563935376] [2022-11-03 02:08:25,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563935376] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:25,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469957270] [2022-11-03 02:08:25,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:25,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:25,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:25,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:25,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:08:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:25,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:08:25,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:25,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:08:25,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469957270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:25,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:08:25,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-03 02:08:25,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619634491] [2022-11-03 02:08:25,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:25,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:08:25,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:25,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:08:25,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:08:25,464 INFO L87 Difference]: Start difference. First operand 239 states and 284 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:08:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:25,565 INFO L93 Difference]: Finished difference Result 334 states and 410 transitions. [2022-11-03 02:08:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:08:25,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-03 02:08:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:25,568 INFO L225 Difference]: With dead ends: 334 [2022-11-03 02:08:25,568 INFO L226 Difference]: Without dead ends: 238 [2022-11-03 02:08:25,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:08:25,570 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 32 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:25,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 108 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:08:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-03 02:08:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-11-03 02:08:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 165 states have (on average 1.1818181818181819) internal successors, (195), 181 states have internal predecessors, (195), 34 states have call successors, (34), 31 states have call predecessors, (34), 38 states have return successors, (47), 36 states have call predecessors, (47), 34 states have call successors, (47) [2022-11-03 02:08:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 276 transitions. [2022-11-03 02:08:25,630 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 276 transitions. Word has length 59 [2022-11-03 02:08:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:25,631 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 276 transitions. [2022-11-03 02:08:25,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:08:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 276 transitions. [2022-11-03 02:08:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 02:08:25,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:25,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:25,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:25,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 02:08:25,846 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:25,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:25,846 INFO L85 PathProgramCache]: Analyzing trace with hash 563687670, now seen corresponding path program 1 times [2022-11-03 02:08:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:25,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415428247] [2022-11-03 02:08:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:25,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:08:26,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:26,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415428247] [2022-11-03 02:08:26,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415428247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:26,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367554205] [2022-11-03 02:08:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:26,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:26,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:26,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:26,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:08:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:26,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:08:26,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:26,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:08:26,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367554205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:26,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:08:26,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-11-03 02:08:26,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666094384] [2022-11-03 02:08:26,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:26,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:08:26,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:08:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:08:26,372 INFO L87 Difference]: Start difference. First operand 238 states and 276 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-03 02:08:26,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:26,801 INFO L93 Difference]: Finished difference Result 442 states and 526 transitions. [2022-11-03 02:08:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:08:26,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2022-11-03 02:08:26,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:26,804 INFO L225 Difference]: With dead ends: 442 [2022-11-03 02:08:26,804 INFO L226 Difference]: Without dead ends: 308 [2022-11-03 02:08:26,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:08:26,806 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 134 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:26,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 185 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:08:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-03 02:08:26,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 224. [2022-11-03 02:08:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 156 states have (on average 1.1730769230769231) internal successors, (183), 168 states have internal predecessors, (183), 33 states have call successors, (33), 32 states have call predecessors, (33), 34 states have return successors, (41), 32 states have call predecessors, (41), 33 states have call successors, (41) [2022-11-03 02:08:26,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 257 transitions. [2022-11-03 02:08:26,883 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 257 transitions. Word has length 63 [2022-11-03 02:08:26,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:26,883 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 257 transitions. [2022-11-03 02:08:26,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-03 02:08:26,884 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 257 transitions. [2022-11-03 02:08:26,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 02:08:26,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:26,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:26,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:27,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:27,101 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:27,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:27,101 INFO L85 PathProgramCache]: Analyzing trace with hash -737942555, now seen corresponding path program 1 times [2022-11-03 02:08:27,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:27,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2175662] [2022-11-03 02:08:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:27,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:08:27,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:27,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2175662] [2022-11-03 02:08:27,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2175662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:27,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903594096] [2022-11-03 02:08:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:27,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:27,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:27,693 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:27,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:08:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:27,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:08:27,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 02:08:28,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:08:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:08:28,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903594096] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:08:28,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [513578687] [2022-11-03 02:08:28,604 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-03 02:08:28,604 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:08:28,604 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:08:28,605 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:08:28,605 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:08:35,250 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 305 for LOIs [2022-11-03 02:08:35,319 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2022-11-03 02:08:35,449 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 49 for LOIs [2022-11-03 02:08:35,883 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 59 for LOIs [2022-11-03 02:08:36,090 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2022-11-03 02:08:36,092 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:08:47,672 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7321#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (<= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 2147483647) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~6#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~6#1| 0) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (<= 0 (+ |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 2147483648)) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-03 02:08:47,672 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:08:47,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:08:47,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 31 [2022-11-03 02:08:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965333620] [2022-11-03 02:08:47,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:08:47,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-03 02:08:47,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:47,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-03 02:08:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=3184, Unknown=0, NotChecked=0, Total=3540 [2022-11-03 02:08:47,676 INFO L87 Difference]: Start difference. First operand 224 states and 257 transitions. Second operand has 31 states, 28 states have (on average 3.892857142857143) internal successors, (109), 28 states have internal predecessors, (109), 13 states have call successors, (20), 10 states have call predecessors, (20), 9 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2022-11-03 02:08:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:50,998 INFO L93 Difference]: Finished difference Result 624 states and 739 transitions. [2022-11-03 02:08:50,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-03 02:08:50,999 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.892857142857143) internal successors, (109), 28 states have internal predecessors, (109), 13 states have call successors, (20), 10 states have call predecessors, (20), 9 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 63 [2022-11-03 02:08:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:51,002 INFO L225 Difference]: With dead ends: 624 [2022-11-03 02:08:51,002 INFO L226 Difference]: Without dead ends: 501 [2022-11-03 02:08:51,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 152 SyntacticMatches, 5 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3991 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=1124, Invalid=9382, Unknown=0, NotChecked=0, Total=10506 [2022-11-03 02:08:51,006 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1426 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 876 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:51,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 916 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [876 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:08:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-11-03 02:08:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 341. [2022-11-03 02:08:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 238 states have (on average 1.1680672268907564) internal successors, (278), 255 states have internal predecessors, (278), 50 states have call successors, (50), 48 states have call predecessors, (50), 52 states have return successors, (63), 50 states have call predecessors, (63), 50 states have call successors, (63) [2022-11-03 02:08:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 391 transitions. [2022-11-03 02:08:51,087 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 391 transitions. Word has length 63 [2022-11-03 02:08:51,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:51,088 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 391 transitions. [2022-11-03 02:08:51,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.892857142857143) internal successors, (109), 28 states have internal predecessors, (109), 13 states have call successors, (20), 10 states have call predecessors, (20), 9 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2022-11-03 02:08:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 391 transitions. [2022-11-03 02:08:51,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-03 02:08:51,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:51,090 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:51,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-03 02:08:51,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:51,306 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1597869975, now seen corresponding path program 2 times [2022-11-03 02:08:51,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:51,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634474961] [2022-11-03 02:08:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:51,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:08:52,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:52,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634474961] [2022-11-03 02:08:52,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634474961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:52,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431501126] [2022-11-03 02:08:52,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:08:52,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:52,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:52,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:52,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:08:52,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 02:08:52,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:08:52,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 02:08:52,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:08:52,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:08:52,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431501126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:52,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:08:52,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-03 02:08:52,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796063513] [2022-11-03 02:08:52,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:52,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:08:52,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:08:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:08:52,547 INFO L87 Difference]: Start difference. First operand 341 states and 391 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:08:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:52,854 INFO L93 Difference]: Finished difference Result 752 states and 880 transitions. [2022-11-03 02:08:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:08:52,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 94 [2022-11-03 02:08:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:52,859 INFO L225 Difference]: With dead ends: 752 [2022-11-03 02:08:52,859 INFO L226 Difference]: Without dead ends: 434 [2022-11-03 02:08:52,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:08:52,860 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 69 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:52,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 200 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:08:52,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-03 02:08:52,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 422. [2022-11-03 02:08:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 300 states have (on average 1.1666666666666667) internal successors, (350), 319 states have internal predecessors, (350), 61 states have call successors, (61), 59 states have call predecessors, (61), 60 states have return successors, (76), 59 states have call predecessors, (76), 61 states have call successors, (76) [2022-11-03 02:08:52,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 487 transitions. [2022-11-03 02:08:52,963 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 487 transitions. Word has length 94 [2022-11-03 02:08:52,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:52,963 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 487 transitions. [2022-11-03 02:08:52,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:08:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 487 transitions. [2022-11-03 02:08:52,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:08:52,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:52,967 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:53,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:53,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:53,181 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:53,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:53,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1258577083, now seen corresponding path program 1 times [2022-11-03 02:08:53,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:53,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498418969] [2022-11-03 02:08:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:53,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 44 proven. 58 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:08:54,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:54,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498418969] [2022-11-03 02:08:54,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498418969] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:54,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052666635] [2022-11-03 02:08:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:54,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:54,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:54,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:54,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:08:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:54,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 02:08:54,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 64 proven. 38 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:08:55,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:08:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 69 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:08:56,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052666635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:08:56,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1171631279] [2022-11-03 02:08:56,011 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2022-11-03 02:08:56,011 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:08:56,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:08:56,012 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:08:56,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:09:00,857 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 305 for LOIs [2022-11-03 02:09:00,923 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2022-11-03 02:09:01,042 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 49 for LOIs [2022-11-03 02:09:01,398 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 59 for LOIs [2022-11-03 02:09:01,578 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2022-11-03 02:09:01,580 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:09:13,688 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11757#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (<= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 2147483647) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~6#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~6#1| 0) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (<= 0 (+ |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 2147483648)) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-03 02:09:13,688 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:09:13,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:09:13,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 13] total 41 [2022-11-03 02:09:13,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611933028] [2022-11-03 02:09:13,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:09:13,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-03 02:09:13,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:13,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-03 02:09:13,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=4305, Unknown=0, NotChecked=0, Total=4830 [2022-11-03 02:09:13,693 INFO L87 Difference]: Start difference. First operand 422 states and 487 transitions. Second operand has 41 states, 38 states have (on average 4.473684210526316) internal successors, (170), 39 states have internal predecessors, (170), 19 states have call successors, (27), 8 states have call predecessors, (27), 16 states have return successors, (30), 20 states have call predecessors, (30), 19 states have call successors, (30) [2022-11-03 02:09:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:15,031 INFO L93 Difference]: Finished difference Result 544 states and 634 transitions. [2022-11-03 02:09:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:09:15,034 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 4.473684210526316) internal successors, (170), 39 states have internal predecessors, (170), 19 states have call successors, (27), 8 states have call predecessors, (27), 16 states have return successors, (30), 20 states have call predecessors, (30), 19 states have call successors, (30) Word has length 110 [2022-11-03 02:09:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:15,035 INFO L225 Difference]: With dead ends: 544 [2022-11-03 02:09:15,035 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:09:15,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 282 SyntacticMatches, 9 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3532 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=915, Invalid=6395, Unknown=0, NotChecked=0, Total=7310 [2022-11-03 02:09:15,038 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 564 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:15,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 487 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:09:15,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:09:15,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:09:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:09:15,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 110 [2022-11-03 02:09:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:15,040 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:09:15,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 4.473684210526316) internal successors, (170), 39 states have internal predecessors, (170), 19 states have call successors, (27), 8 states have call predecessors, (27), 16 states have return successors, (30), 20 states have call predecessors, (30), 19 states have call successors, (30) [2022-11-03 02:09:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:09:15,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:09:15,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:09:15,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:15,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:15,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 02:09:31,191 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 252 259) the Hoare annotation is: (or (not (= ~waterLevel~0 1)) (not (= 1 ~systemActive~0)) (not (= |old(~pumpRunning~0)| 1)) (= ~pumpRunning~0 1)) [2022-11-03 02:09:31,191 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 252 259) no Hoare annotation was computed. [2022-11-03 02:09:31,191 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 159 165) no Hoare annotation was computed. [2022-11-03 02:09:31,192 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 159 165) the Hoare annotation is: true [2022-11-03 02:09:31,192 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 933 944) the Hoare annotation is: true [2022-11-03 02:09:31,192 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 933 944) no Hoare annotation was computed. [2022-11-03 02:09:31,192 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 446 475) no Hoare annotation was computed. [2022-11-03 02:09:31,192 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 446 475) the Hoare annotation is: true [2022-11-03 02:09:31,192 INFO L902 garLoopResultBuilder]: At program point L471(lines 446 475) the Hoare annotation is: true [2022-11-03 02:09:31,193 INFO L899 garLoopResultBuilder]: For program point L467(line 467) no Hoare annotation was computed. [2022-11-03 02:09:31,193 INFO L899 garLoopResultBuilder]: For program point L460(lines 460 464) no Hoare annotation was computed. [2022-11-03 02:09:31,193 INFO L902 garLoopResultBuilder]: At program point L460-1(lines 460 464) the Hoare annotation is: true [2022-11-03 02:09:31,193 INFO L902 garLoopResultBuilder]: At program point L456-2(lines 456 470) the Hoare annotation is: true [2022-11-03 02:09:31,193 INFO L902 garLoopResultBuilder]: At program point L452(line 452) the Hoare annotation is: true [2022-11-03 02:09:31,193 INFO L899 garLoopResultBuilder]: For program point L452-1(line 452) no Hoare annotation was computed. [2022-11-03 02:09:31,194 INFO L895 garLoopResultBuilder]: At program point L440(line 440) the Hoare annotation is: (let ((.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1) (or .cse2 .cse0 .cse1) (or .cse2 (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse2 (not (= 0 ~systemActive~0))))) [2022-11-03 02:09:31,194 INFO L895 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: (let ((.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse3 (or (= ~pumpRunning~0 0) (not (< 0 ~waterLevel~0)))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1) (or .cse2 .cse0 .cse1 (and .cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (or (and .cse3 (= ~waterLevel~0 1)) .cse2 (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse2 (not (= 0 ~systemActive~0))))) [2022-11-03 02:09:31,194 INFO L895 garLoopResultBuilder]: At program point L238-1(lines 219 243) the Hoare annotation is: (let ((.cse1 (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))) (.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (= |old(~waterLevel~0)| 2)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1 .cse2) (or .cse3 (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1) (or .cse3 (not (= 0 ~systemActive~0))) (or .cse3 .cse0 .cse2 (and (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1))))) [2022-11-03 02:09:31,194 INFO L899 garLoopResultBuilder]: For program point L139-1(lines 138 157) no Hoare annotation was computed. [2022-11-03 02:09:31,194 INFO L899 garLoopResultBuilder]: For program point L227(lines 227 235) no Hoare annotation was computed. [2022-11-03 02:09:31,195 INFO L899 garLoopResultBuilder]: For program point L384(lines 384 390) no Hoare annotation was computed. [2022-11-03 02:09:31,195 INFO L895 garLoopResultBuilder]: At program point L223(lines 223 240) the Hoare annotation is: (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse1 (not (= 1 ~systemActive~0))) (.cse4 (let ((.cse5 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (or (and (not (< 0 ~waterLevel~0)) .cse5) (and (= ~pumpRunning~0 0) .cse5)))) (.cse0 (= ~waterLevel~0 1)) (.cse3 (not (= |old(~pumpRunning~0)| 0)))) (and (or (and .cse0 (= ~pumpRunning~0 1)) .cse1 (not (= |old(~pumpRunning~0)| 1)) .cse2) (or .cse3 .cse1 .cse2 (and .cse4 (= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse3 (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse4 .cse0)) (or .cse3 (not (= 0 ~systemActive~0))))) [2022-11-03 02:09:31,195 INFO L895 garLoopResultBuilder]: At program point L380(lines 380 393) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse6 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~6#1| ~waterLevel~0))) (let ((.cse5 (and .cse1 (= ~waterLevel~0 1) .cse6)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= 1 ~systemActive~0))) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not .cse2)) (or .cse3 (not (= |old(~pumpRunning~0)| 1)) .cse4 .cse5) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 .cse2 .cse5) (or .cse0 .cse3 (and (= |old(~waterLevel~0)| ~waterLevel~0) .cse6 (= ~pumpRunning~0 1)) .cse4 .cse2)))) [2022-11-03 02:09:31,196 INFO L895 garLoopResultBuilder]: At program point L380-1(lines 372 396) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse6 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~6#1| ~waterLevel~0))) (let ((.cse5 (and .cse1 (= ~waterLevel~0 1) .cse6)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= 1 ~systemActive~0))) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not .cse2)) (or .cse3 (not (= |old(~pumpRunning~0)| 1)) .cse4 .cse5) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 .cse2 .cse5) (or .cse0 .cse3 (and (= |old(~waterLevel~0)| ~waterLevel~0) .cse6 (= ~pumpRunning~0 1)) .cse4 .cse2)))) [2022-11-03 02:09:31,196 INFO L895 garLoopResultBuilder]: At program point L146-1(lines 146 152) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 0))) (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse1 (and .cse4 (= ~waterLevel~0 1))) (.cse5 (= 0 ~systemActive~0))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1 .cse2) (or .cse3 .cse4 (not .cse5)) (or .cse3 .cse0 .cse2 .cse5 (and (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1))) (or .cse3 (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1 .cse5)))) [2022-11-03 02:09:31,196 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 135 158) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse5 (= 0 ~systemActive~0)) (.cse3 (not (= 1 ~systemActive~0))) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 (and .cse1 .cse2) .cse3 .cse4 .cse5) (or .cse0 .cse1 (not .cse5)) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 (and .cse1 (= ~waterLevel~0 1)) .cse5) (or .cse3 (not (= |old(~pumpRunning~0)| 1)) .cse4 (and .cse2 (= ~pumpRunning~0 1))))) [2022-11-03 02:09:31,196 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 135 158) no Hoare annotation was computed. [2022-11-03 02:09:31,197 INFO L895 garLoopResultBuilder]: At program point L233(line 233) the Hoare annotation is: (let ((.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (= |old(~pumpRunning~0)| 0)))) (and (or (and (= ~waterLevel~0 1) (= ~pumpRunning~0 1)) .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1) (or .cse2 .cse0 .cse1) (or .cse2 (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse2 (not (= 0 ~systemActive~0))))) [2022-11-03 02:09:31,197 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 440) no Hoare annotation was computed. [2022-11-03 02:09:31,197 INFO L895 garLoopResultBuilder]: At program point L229(line 229) the Hoare annotation is: (let ((.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (= |old(~pumpRunning~0)| 0)))) (and (or (and (= ~waterLevel~0 1) (= ~pumpRunning~0 1)) .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1) (or .cse2 .cse0 .cse1) (or .cse2 (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse2 (not (= 0 ~systemActive~0))))) [2022-11-03 02:09:31,197 INFO L899 garLoopResultBuilder]: For program point L85(lines 85 91) no Hoare annotation was computed. [2022-11-03 02:09:31,197 INFO L899 garLoopResultBuilder]: For program point L85-1(lines 85 91) no Hoare annotation was computed. [2022-11-03 02:09:31,199 INFO L895 garLoopResultBuilder]: At program point L527(lines 527 534) the Hoare annotation is: (let ((.cse2 (select |#memory_int| 11)) (.cse8 (select |#memory_int| 8)) (.cse4 (select |#memory_int| 9)) (.cse10 (select |#memory_int| 28)) (.cse5 (select |#memory_int| 7)) (.cse1 (select |#memory_int| 6)) (.cse11 (select |#memory_int| 1)) (.cse9 (select |#memory_int| 25)) (.cse3 (select |#memory_int| 10)) (.cse7 (select |#memory_int| 5)) (.cse6 (select |#memory_int| 27)) (.cse0 (select |#memory_int| 26))) (and (= (select .cse0 3) 84) (= (select .cse1 2) 102) (= (select .cse2 1) 0) (= 1 (select |#valid| 5)) (= 32 (select .cse3 1)) (= (select |#length| 3) 12) (= (select .cse4 0) 79) (= (select |#valid| 15) 1) (= 112 (select .cse5 4)) (= (select .cse1 0) 79) (= 82 (select .cse0 1)) (= 3 (select |#length| 10)) (= ~pumpRunning~0 0) (= (select |#valid| 26) 1) (= 67 (select .cse0 0)) (= (select .cse5 1) 80) (= (select .cse6 2) 0) (= 9 (select |#length| 16)) (= (select |#length| 8) 3) (= (select |#length| 6) 4) (= (select |#length| 20) 25) (= (select .cse6 1) 75) (= (select |#valid| 9) 1) (= (select |#length| 4) 13) (= 117 (select .cse5 2)) (= (select .cse7 2) 0) (= 7 (select |#length| 7)) (= (select |#length| 28) 2) (= 110 (select .cse8 1)) (= (select .cse1 1) 102) (= (select |#length| 15) 30) (= (select |#valid| 11) 1) (= (select |#valid| 27) 1) (= ~methaneLevelCritical~0 0) (= 58 (select .cse5 5)) (= (select .cse8 0) 79) (= 44 (select .cse5 0)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 30 (select |#length| 12)) (= (select |#length| 24) 13) (= (select |#length| 27) 3) (= (select .cse2 0) 10) (= 2 (select |#length| 1)) (= (select .cse9 5) 58) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 5 (select |#length| 26)) (= 77 (select .cse9 1)) (= (select |#valid| 18) 1) (= (select |#valid| 22) 1) (= 3 (select |#length| 5)) (= 25 (select |#length| 23)) (= 2 (select |#length| 11)) (= 1 ~systemActive~0) (= (select .cse9 6) 0) (= (select |#valid| 24) 1) (= (select .cse0 4) 0) (= (select .cse4 3) 0) (= (select |#valid| 12) 1) (= (select |#length| 19) 9) (= (select |#valid| 28) 1) (= (select .cse10 1) 0) (= (select |#valid| 4) 1) (= (select .cse4 1) 102) (= 9 (select |#length| 13)) (= (select .cse8 2) 0) (= (select |#valid| 1) 1) (= (select .cse5 6) 0) (= (select .cse4 2) 102) (= (select |#valid| 20) 1) (= (select .cse7 0) 79) (= (select |#valid| 21) 1) (= (select |#length| 9) 4) (= (select |#length| 22) 9) (= (select |#valid| 14) 1) (= (select |#length| 21) 30) (= (select |#valid| 0) 0) (= (select |#valid| 25) 1) (= (select |#length| 17) 21) (= ~head~0.base 0) (= 101 (select .cse9 2)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= ~waterLevel~0 1) (= (select .cse3 2) 0) (= (select .cse9 0) 44) (= (select .cse11 0) 48) (= (select |#valid| 23) 1) (= 41 (select .cse10 0)) (= |ULTIMATE.start_main_~tmp~7#1| ~systemActive~0) (= 116 (select .cse9 3)) (= 7 (select |#length| 25)) (= (select |#valid| 19) 1) (= 109 (select .cse5 3)) (= (select .cse1 3) 0) (= (select |#valid| 16) 1) (= (select |#valid| 6) 1) (= 30 (select |#length| 18)) (= (select .cse11 1) 0) (= 104 (select .cse9 4)) (= (select .cse3 0) 41) (= |ULTIMATE.start_valid_product_~retValue_acc~5#1| |ULTIMATE.start_valid_product_#res#1|) (= (select |#valid| 17) 1) (= (select |#valid| 10) 1) (= (select .cse7 1) 110) (= (select .cse6 0) 79) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (= (select .cse0 2) 73) (< 0 |#StackHeapBarrier|) (= |ULTIMATE.start_valid_product_~retValue_acc~5#1| 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= 21 (select |#length| 14)))) [2022-11-03 02:09:31,199 INFO L895 garLoopResultBuilder]: At program point L110(lines 65 112) the Hoare annotation is: (let ((.cse4 (= 0 ~systemActive~0))) (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (not .cse4)) (.cse3 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2 (= ~pumpRunning~0 1)) (and .cse3 .cse0 .cse1 (= ~waterLevel~0 1) .cse2) (and .cse3 .cse1 .cse4)))) [2022-11-03 02:09:31,199 INFO L895 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (let ((.cse4 (= 0 ~systemActive~0))) (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (not .cse4)) (.cse3 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 .cse1 (<= ~waterLevel~0 2) .cse2 (= ~pumpRunning~0 1)) (and .cse3 .cse0 .cse1 (= ~waterLevel~0 1) .cse2) (and .cse3 .cse1 .cse4)))) [2022-11-03 02:09:31,199 INFO L902 garLoopResultBuilder]: At program point L527-2(lines 527 534) the Hoare annotation is: true [2022-11-03 02:09:31,199 INFO L899 garLoopResultBuilder]: For program point L358(lines 358 364) no Hoare annotation was computed. [2022-11-03 02:09:31,200 INFO L895 garLoopResultBuilder]: At program point L358-1(lines 358 364) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) [2022-11-03 02:09:31,200 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-03 02:09:31,200 INFO L899 garLoopResultBuilder]: For program point L66(lines 65 112) no Hoare annotation was computed. [2022-11-03 02:09:31,200 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 02:09:31,203 INFO L899 garLoopResultBuilder]: For program point L95(lines 95 108) no Hoare annotation was computed. [2022-11-03 02:09:31,204 INFO L895 garLoopResultBuilder]: At program point L87(line 87) the Hoare annotation is: (let ((.cse5 (= 0 ~systemActive~0))) (let ((.cse0 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse3 (not .cse5)) (.cse4 (= ~pumpRunning~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 1)) (and .cse4 .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse1 .cse2 (= ~waterLevel~0 1) .cse3) (and .cse4 .cse2 .cse5)))) [2022-11-03 02:09:31,204 INFO L902 garLoopResultBuilder]: At program point L116(lines 55 120) the Hoare annotation is: true [2022-11-03 02:09:31,204 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 81) no Hoare annotation was computed. [2022-11-03 02:09:31,204 INFO L899 garLoopResultBuilder]: For program point L75-1(lines 75 81) no Hoare annotation was computed. [2022-11-03 02:09:31,204 INFO L895 garLoopResultBuilder]: At program point L360(line 360) the Hoare annotation is: (and (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (not (= 0 ~systemActive~0))) [2022-11-03 02:09:31,204 INFO L895 garLoopResultBuilder]: At program point L113(lines 64 114) the Hoare annotation is: false [2022-11-03 02:09:31,205 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 107) no Hoare annotation was computed. [2022-11-03 02:09:31,205 INFO L895 garLoopResultBuilder]: At program point L101-2(lines 95 108) the Hoare annotation is: (let ((.cse5 (= 0 ~systemActive~0))) (let ((.cse0 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse3 (not .cse5)) (.cse4 (= ~pumpRunning~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 1)) (and .cse4 .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse1 .cse2 (= ~waterLevel~0 1) .cse3) (and .cse4 .cse2 .cse5)))) [2022-11-03 02:09:31,205 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 167 191) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (< 0 ~waterLevel~0)) (not (= 1 ~systemActive~0)) (not (<= ~waterLevel~0 2))) [2022-11-03 02:09:31,205 INFO L895 garLoopResultBuilder]: At program point L186(line 186) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (and (not (= |old(~pumpRunning~0)| 0)) (< 0 ~waterLevel~0)))) (and (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1) (or (not (= ~waterLevel~0 1)) .cse0 .cse1))) [2022-11-03 02:09:31,205 INFO L899 garLoopResultBuilder]: For program point L186-1(lines 167 191) no Hoare annotation was computed. [2022-11-03 02:09:31,205 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 167 191) no Hoare annotation was computed. [2022-11-03 02:09:31,206 INFO L895 garLoopResultBuilder]: At program point L181(line 181) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (and (not (= |old(~pumpRunning~0)| 0)) (< 0 ~waterLevel~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0)) .cse1) (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1))) [2022-11-03 02:09:31,206 INFO L895 garLoopResultBuilder]: At program point L175(lines 175 183) the Hoare annotation is: (let ((.cse3 (< 0 ~waterLevel~0))) (let ((.cse1 (or (= ~pumpRunning~0 0) (not .cse3))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (and (not (= |old(~pumpRunning~0)| 0)) .cse3))) (and (or .cse0 (and .cse1 (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1)) (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse2) (or (not (= ~waterLevel~0 1)) (and .cse1 (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0)) .cse0 .cse2)))) [2022-11-03 02:09:31,206 INFO L895 garLoopResultBuilder]: At program point L171(lines 171 188) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (< 0 ~waterLevel~0)) (not (= 1 ~systemActive~0)) (not (<= ~waterLevel~0 2))) [2022-11-03 02:09:31,206 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 921 932) no Hoare annotation was computed. [2022-11-03 02:09:31,206 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 921 932) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= ~pumpRunning~0 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (= ~waterLevel~0 1)) (or .cse0 (< |old(~waterLevel~0)| 2) (not (= ~pumpRunning~0 1)) (= |old(~waterLevel~0)| ~waterLevel~0) (not (<= |old(~waterLevel~0)| 2))))) [2022-11-03 02:09:31,207 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__lowWaterSensorENTRY(lines 193 217) the Hoare annotation is: (let ((.cse0 (not (= ~waterLevel~0 1))) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (= ~pumpRunning~0 0)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= |old(~pumpRunning~0)| 1)) (= ~pumpRunning~0 1)) (or .cse0 .cse2 .cse3 .cse1) (or .cse2 .cse3 .cse1 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2)))) [2022-11-03 02:09:31,207 INFO L895 garLoopResultBuilder]: At program point L207(line 207) the Hoare annotation is: (let ((.cse0 (not (= ~waterLevel~0 1))) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse2 (not (= |old(~pumpRunning~0)| 1))) (or .cse1 .cse2 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2)))) [2022-11-03 02:09:31,207 INFO L895 garLoopResultBuilder]: At program point L203(line 203) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= ~waterLevel~0 1))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse1 .cse2 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2)) (or .cse0 .cse2 (and (= |processEnvironment__wrappee__lowWaterSensor_~tmp~2#1| 1) (= ~pumpRunning~0 1)) (not (= |old(~pumpRunning~0)| 1))))) [2022-11-03 02:09:31,207 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 209) no Hoare annotation was computed. [2022-11-03 02:09:31,208 INFO L895 garLoopResultBuilder]: At program point L197(lines 197 214) the Hoare annotation is: (let ((.cse0 (not (= ~waterLevel~0 1))) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (= ~pumpRunning~0 0)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= |old(~pumpRunning~0)| 1)) (= ~pumpRunning~0 1)) (or .cse0 .cse2 .cse3 .cse1) (or .cse2 .cse3 .cse1 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2)))) [2022-11-03 02:09:31,208 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__lowWaterSensorEXIT(lines 193 217) no Hoare annotation was computed. [2022-11-03 02:09:31,208 INFO L895 garLoopResultBuilder]: At program point L212(line 212) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 (not (= |old(~pumpRunning~0)| 1))) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (< 0 ~waterLevel~0)) .cse0 (not (<= ~waterLevel~0 2))))) [2022-11-03 02:09:31,208 INFO L899 garLoopResultBuilder]: For program point L212-1(lines 193 217) no Hoare annotation was computed. [2022-11-03 02:09:31,211 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:31,213 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:09:31,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:09:31 BoogieIcfgContainer [2022-11-03 02:09:31,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:09:31,249 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:09:31,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:09:31,249 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:09:31,250 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:34" (3/4) ... [2022-11-03 02:09:31,252 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:09:31,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-03 02:09:31,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-03 02:09:31,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-03 02:09:31,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-03 02:09:31,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-03 02:09:31,259 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-03 02:09:31,259 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-03 02:09:31,259 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__lowWaterSensor [2022-11-03 02:09:31,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 77 nodes and edges [2022-11-03 02:09:31,267 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-11-03 02:09:31,268 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-03 02:09:31,268 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-03 02:09:31,268 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 02:09:31,269 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:09:31,269 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:09:31,297 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((unknown-#memory_int-unknown[26][3] == 84 && unknown-#memory_int-unknown[6][2] == 102) && unknown-#memory_int-unknown[11][1] == 0) && 1 == \valid[5]) && 32 == unknown-#memory_int-unknown[10][1]) && unknown-#length-unknown[3] == 12) && unknown-#memory_int-unknown[9][0] == 79) && \valid[15] == 1) && 112 == unknown-#memory_int-unknown[7][4]) && unknown-#memory_int-unknown[6][0] == 79) && 82 == unknown-#memory_int-unknown[26][1]) && 3 == unknown-#length-unknown[10]) && pumpRunning == 0) && \valid[26] == 1) && 67 == unknown-#memory_int-unknown[26][0]) && unknown-#memory_int-unknown[7][1] == 80) && unknown-#memory_int-unknown[27][2] == 0) && 9 == unknown-#length-unknown[16]) && unknown-#length-unknown[8] == 3) && unknown-#length-unknown[6] == 4) && unknown-#length-unknown[20] == 25) && unknown-#memory_int-unknown[27][1] == 75) && \valid[9] == 1) && unknown-#length-unknown[4] == 13) && 117 == unknown-#memory_int-unknown[7][2]) && unknown-#memory_int-unknown[5][2] == 0) && 7 == unknown-#length-unknown[7]) && unknown-#length-unknown[28] == 2) && 110 == unknown-#memory_int-unknown[8][1]) && unknown-#memory_int-unknown[6][1] == 102) && unknown-#length-unknown[15] == 30) && \valid[11] == 1) && \valid[27] == 1) && methaneLevelCritical == 0) && 58 == unknown-#memory_int-unknown[7][5]) && unknown-#memory_int-unknown[8][0] == 79) && 44 == unknown-#memory_int-unknown[7][0]) && 31 == unknown-#length-unknown[2]) && head == 0) && 30 == unknown-#length-unknown[12]) && unknown-#length-unknown[24] == 13) && unknown-#length-unknown[27] == 3) && unknown-#memory_int-unknown[11][0] == 10) && 2 == unknown-#length-unknown[1]) && unknown-#memory_int-unknown[25][5] == 58) && \valid[3] == 1) && \valid[7] == 1) && 5 == unknown-#length-unknown[26]) && 77 == unknown-#memory_int-unknown[25][1]) && \valid[18] == 1) && \valid[22] == 1) && 3 == unknown-#length-unknown[5]) && 25 == unknown-#length-unknown[23]) && 2 == unknown-#length-unknown[11]) && 1 == systemActive) && unknown-#memory_int-unknown[25][6] == 0) && \valid[24] == 1) && unknown-#memory_int-unknown[26][4] == 0) && unknown-#memory_int-unknown[9][3] == 0) && \valid[12] == 1) && unknown-#length-unknown[19] == 9) && \valid[28] == 1) && unknown-#memory_int-unknown[28][1] == 0) && \valid[4] == 1) && unknown-#memory_int-unknown[9][1] == 102) && 9 == unknown-#length-unknown[13]) && unknown-#memory_int-unknown[8][2] == 0) && \valid[1] == 1) && unknown-#memory_int-unknown[7][6] == 0) && unknown-#memory_int-unknown[9][2] == 102) && \valid[20] == 1) && unknown-#memory_int-unknown[5][0] == 79) && \valid[21] == 1) && unknown-#length-unknown[9] == 4) && unknown-#length-unknown[22] == 9) && \valid[14] == 1) && unknown-#length-unknown[21] == 30) && \valid[0] == 0) && \valid[25] == 1) && unknown-#length-unknown[17] == 21) && head == 0) && 101 == unknown-#memory_int-unknown[25][2]) && \valid[2] == 1) && #NULL == 0) && waterLevel == 1) && unknown-#memory_int-unknown[10][2] == 0) && unknown-#memory_int-unknown[25][0] == 44) && unknown-#memory_int-unknown[1][0] == 48) && \valid[23] == 1) && 41 == unknown-#memory_int-unknown[28][0]) && tmp == systemActive) && 116 == unknown-#memory_int-unknown[25][3]) && 7 == unknown-#length-unknown[25]) && \valid[19] == 1) && 109 == unknown-#memory_int-unknown[7][3]) && unknown-#memory_int-unknown[6][3] == 0) && \valid[16] == 1) && \valid[6] == 1) && 30 == unknown-#length-unknown[18]) && unknown-#memory_int-unknown[1][1] == 0) && 104 == unknown-#memory_int-unknown[25][4]) && unknown-#memory_int-unknown[10][0] == 41) && retValue_acc == \result) && \valid[17] == 1) && \valid[10] == 1) && unknown-#memory_int-unknown[5][1] == 110) && unknown-#memory_int-unknown[27][0] == 79) && \valid[8] == 1) && \valid[13] == 1) && unknown-#memory_int-unknown[26][2] == 73) && 0 < unknown-#StackHeapBarrier-unknown) && retValue_acc == 1) && cleanupTimeShifts == 4) && #NULL == 0) && 21 == unknown-#length-unknown[14] [2022-11-03 02:09:31,300 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive)) && (((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) [2022-11-03 02:09:31,301 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || !(\old(waterLevel) == 2)) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || 0 == systemActive) || (\old(waterLevel) == waterLevel && pumpRunning == 1))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) [2022-11-03 02:09:31,301 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((waterLevel == 1 && pumpRunning == 1) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || (((!(0 < waterLevel) && waterLevel <= \old(waterLevel)) || (pumpRunning == 0 && waterLevel <= \old(waterLevel))) && \old(waterLevel) == waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (((!(0 < waterLevel) && waterLevel <= \old(waterLevel)) || (pumpRunning == 0 && waterLevel <= \old(waterLevel))) && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-03 02:09:31,302 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || !(\old(waterLevel) == 2)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) [2022-11-03 02:09:31,303 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(waterLevel == 1) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || pumpRunning == 1) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive))) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(waterLevel <= 2)) || waterLevel < 2) [2022-11-03 02:09:31,303 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 < waterLevel)) || !(1 == systemActive)) || !(waterLevel <= 2) [2022-11-03 02:09:31,304 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || ((pumpRunning == 0 && waterLevel == 1) && tmp == waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && waterLevel == 1) && tmp == waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((\old(waterLevel) == waterLevel && tmp == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) [2022-11-03 02:09:31,305 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || ((pumpRunning == 0 && waterLevel == 1) && tmp == waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && waterLevel == 1) && tmp == waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((\old(waterLevel) == waterLevel && tmp == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) [2022-11-03 02:09:31,305 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-03 02:09:31,307 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(1 == systemActive) || ((pumpRunning == 0 || !(0 < waterLevel)) && tmp == 1)) || !(waterLevel <= 2)) || waterLevel < 2) || (!(\old(pumpRunning) == 0) && 0 < waterLevel)) && (((!(waterLevel == 1) || ((pumpRunning == 0 || !(0 < waterLevel)) && tmp == 0)) || !(1 == systemActive)) || (!(\old(pumpRunning) == 0) && 0 < waterLevel)) [2022-11-03 02:09:31,349 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:09:31,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:09:31,350 INFO L158 Benchmark]: Toolchain (without parser) took 178530.29ms. Allocated memory was 134.2MB in the beginning and 522.2MB in the end (delta: 388.0MB). Free memory was 100.4MB in the beginning and 406.7MB in the end (delta: -306.3MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2022-11-03 02:09:31,350 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 96.5MB. Free memory was 52.9MB in the beginning and 52.8MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:09:31,351 INFO L158 Benchmark]: CACSL2BoogieTranslator took 676.67ms. Allocated memory is still 134.2MB. Free memory was 100.1MB in the beginning and 100.3MB in the end (delta: -196.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:09:31,351 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.66ms. Allocated memory is still 134.2MB. Free memory was 100.3MB in the beginning and 97.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 02:09:31,351 INFO L158 Benchmark]: Boogie Preprocessor took 66.86ms. Allocated memory is still 134.2MB. Free memory was 97.3MB in the beginning and 95.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:09:31,352 INFO L158 Benchmark]: RCFGBuilder took 778.36ms. Allocated memory is still 134.2MB. Free memory was 95.7MB in the beginning and 104.4MB in the end (delta: -8.7MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2022-11-03 02:09:31,352 INFO L158 Benchmark]: TraceAbstraction took 176811.18ms. Allocated memory was 134.2MB in the beginning and 522.2MB in the end (delta: 388.0MB). Free memory was 103.7MB in the beginning and 411.9MB in the end (delta: -308.2MB). Peak memory consumption was 321.0MB. Max. memory is 16.1GB. [2022-11-03 02:09:31,352 INFO L158 Benchmark]: Witness Printer took 100.65ms. Allocated memory is still 522.2MB. Free memory was 411.9MB in the beginning and 406.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 02:09:31,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 96.5MB. Free memory was 52.9MB in the beginning and 52.8MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 676.67ms. Allocated memory is still 134.2MB. Free memory was 100.1MB in the beginning and 100.3MB in the end (delta: -196.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.66ms. Allocated memory is still 134.2MB. Free memory was 100.3MB in the beginning and 97.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.86ms. Allocated memory is still 134.2MB. Free memory was 97.3MB in the beginning and 95.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 778.36ms. Allocated memory is still 134.2MB. Free memory was 95.7MB in the beginning and 104.4MB in the end (delta: -8.7MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * TraceAbstraction took 176811.18ms. Allocated memory was 134.2MB in the beginning and 522.2MB in the end (delta: 388.0MB). Free memory was 103.7MB in the beginning and 411.9MB in the end (delta: -308.2MB). Peak memory consumption was 321.0MB. Max. memory is 16.1GB. * Witness Printer took 100.65ms. Allocated memory is still 522.2MB. Free memory was 411.9MB in the beginning and 406.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 440]: 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, 67 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 176.7s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 30.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 15.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2771 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2740 mSDsluCounter, 3347 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2783 mSDsCounter, 1438 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4287 IncrementalHoareTripleChecker+Invalid, 5725 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1438 mSolverCounterUnsat, 942 mSDtfsCounter, 4287 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1113 GetRequests, 805 SyntacticMatches, 24 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8203 ImplicationChecksByTransitivity, 111.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=422occurred in iteration=12, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 341 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 1144 PreInvPairs, 1200 NumberOfFragments, 2085 HoareAnnotationTreeSize, 1144 FomulaSimplifications, 5980 FormulaSimplificationTreeSizeReduction, 1.6s HoareSimplificationTime, 40 FomulaSimplificationsInter, 45154 FormulaSimplificationTreeSizeReductionInter, 14.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 1045 NumberOfCodeBlocks, 1015 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1253 ConstructedInterpolants, 0 QuantifiedInterpolants, 4552 SizeOfPredicates, 42 NumberOfNonLiveVariables, 2728 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 22 InterpolantComputations, 10 PerfectInterpolantSequences, 534/736 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: OVERALL_TIME: 21.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 44, DAG_INTERPRETER_EARLY_EXITS: 6, TOOLS_POST_APPLICATIONS: 59, TOOLS_POST_TIME: 4.4s, TOOLS_POST_CALL_APPLICATIONS: 22, TOOLS_POST_CALL_TIME: 10.9s, TOOLS_POST_RETURN_APPLICATIONS: 18, TOOLS_POST_RETURN_TIME: 4.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 99, TOOLS_QUANTIFIERELIM_TIME: 19.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 2.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 123, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 17, DOMAIN_JOIN_TIME: 1.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 44, DOMAIN_ISBOTTOM_TIME: 0.3s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 8.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 8.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 18, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME: 0.2s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 439, DAG_COMPRESSION_RETAINED_NODES: 106, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 223]: Loop Invariant Derived loop invariant: ((((((waterLevel == 1 && pumpRunning == 1) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || (((!(0 < waterLevel) && waterLevel <= \old(waterLevel)) || (pumpRunning == 0 && waterLevel <= \old(waterLevel))) && \old(waterLevel) == waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (((!(0 < waterLevel) && waterLevel <= \old(waterLevel)) || (pumpRunning == 0 && waterLevel <= \old(waterLevel))) && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 456]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: (((((2 == waterLevel && 1 == systemActive) && splverifierCounter == 0) && !(0 == systemActive)) && pumpRunning == 1) || ((((pumpRunning == 0 && 1 == systemActive) && splverifierCounter == 0) && waterLevel == 1) && !(0 == systemActive))) || ((pumpRunning == 0 && splverifierCounter == 0) && 0 == systemActive) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 446]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 358]: Loop Invariant Derived loop invariant: pumpRunning == 0 && splverifierCounter == 0 - InvariantResult [Line: 171]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 < waterLevel)) || !(1 == systemActive)) || !(waterLevel <= 2) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: ((((!(waterLevel == 1) || !(1 == systemActive)) || !(\old(pumpRunning) == 1)) || pumpRunning == 1) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive))) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(waterLevel <= 2)) || waterLevel < 2) - InvariantResult [Line: 135]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive)) && (((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) - InvariantResult [Line: 372]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || ((pumpRunning == 0 && waterLevel == 1) && tmp == waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && waterLevel == 1) && tmp == waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((\old(waterLevel) == waterLevel && tmp == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) - InvariantResult [Line: 527]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((unknown-#memory_int-unknown[26][3] == 84 && unknown-#memory_int-unknown[6][2] == 102) && unknown-#memory_int-unknown[11][1] == 0) && 1 == \valid[5]) && 32 == unknown-#memory_int-unknown[10][1]) && unknown-#length-unknown[3] == 12) && unknown-#memory_int-unknown[9][0] == 79) && \valid[15] == 1) && 112 == unknown-#memory_int-unknown[7][4]) && unknown-#memory_int-unknown[6][0] == 79) && 82 == unknown-#memory_int-unknown[26][1]) && 3 == unknown-#length-unknown[10]) && pumpRunning == 0) && \valid[26] == 1) && 67 == unknown-#memory_int-unknown[26][0]) && unknown-#memory_int-unknown[7][1] == 80) && unknown-#memory_int-unknown[27][2] == 0) && 9 == unknown-#length-unknown[16]) && unknown-#length-unknown[8] == 3) && unknown-#length-unknown[6] == 4) && unknown-#length-unknown[20] == 25) && unknown-#memory_int-unknown[27][1] == 75) && \valid[9] == 1) && unknown-#length-unknown[4] == 13) && 117 == unknown-#memory_int-unknown[7][2]) && unknown-#memory_int-unknown[5][2] == 0) && 7 == unknown-#length-unknown[7]) && unknown-#length-unknown[28] == 2) && 110 == unknown-#memory_int-unknown[8][1]) && unknown-#memory_int-unknown[6][1] == 102) && unknown-#length-unknown[15] == 30) && \valid[11] == 1) && \valid[27] == 1) && methaneLevelCritical == 0) && 58 == unknown-#memory_int-unknown[7][5]) && unknown-#memory_int-unknown[8][0] == 79) && 44 == unknown-#memory_int-unknown[7][0]) && 31 == unknown-#length-unknown[2]) && head == 0) && 30 == unknown-#length-unknown[12]) && unknown-#length-unknown[24] == 13) && unknown-#length-unknown[27] == 3) && unknown-#memory_int-unknown[11][0] == 10) && 2 == unknown-#length-unknown[1]) && unknown-#memory_int-unknown[25][5] == 58) && \valid[3] == 1) && \valid[7] == 1) && 5 == unknown-#length-unknown[26]) && 77 == unknown-#memory_int-unknown[25][1]) && \valid[18] == 1) && \valid[22] == 1) && 3 == unknown-#length-unknown[5]) && 25 == unknown-#length-unknown[23]) && 2 == unknown-#length-unknown[11]) && 1 == systemActive) && unknown-#memory_int-unknown[25][6] == 0) && \valid[24] == 1) && unknown-#memory_int-unknown[26][4] == 0) && unknown-#memory_int-unknown[9][3] == 0) && \valid[12] == 1) && unknown-#length-unknown[19] == 9) && \valid[28] == 1) && unknown-#memory_int-unknown[28][1] == 0) && \valid[4] == 1) && unknown-#memory_int-unknown[9][1] == 102) && 9 == unknown-#length-unknown[13]) && unknown-#memory_int-unknown[8][2] == 0) && \valid[1] == 1) && unknown-#memory_int-unknown[7][6] == 0) && unknown-#memory_int-unknown[9][2] == 102) && \valid[20] == 1) && unknown-#memory_int-unknown[5][0] == 79) && \valid[21] == 1) && unknown-#length-unknown[9] == 4) && unknown-#length-unknown[22] == 9) && \valid[14] == 1) && unknown-#length-unknown[21] == 30) && \valid[0] == 0) && \valid[25] == 1) && unknown-#length-unknown[17] == 21) && head == 0) && 101 == unknown-#memory_int-unknown[25][2]) && \valid[2] == 1) && #NULL == 0) && waterLevel == 1) && unknown-#memory_int-unknown[10][2] == 0) && unknown-#memory_int-unknown[25][0] == 44) && unknown-#memory_int-unknown[1][0] == 48) && \valid[23] == 1) && 41 == unknown-#memory_int-unknown[28][0]) && tmp == systemActive) && 116 == unknown-#memory_int-unknown[25][3]) && 7 == unknown-#length-unknown[25]) && \valid[19] == 1) && 109 == unknown-#memory_int-unknown[7][3]) && unknown-#memory_int-unknown[6][3] == 0) && \valid[16] == 1) && \valid[6] == 1) && 30 == unknown-#length-unknown[18]) && unknown-#memory_int-unknown[1][1] == 0) && 104 == unknown-#memory_int-unknown[25][4]) && unknown-#memory_int-unknown[10][0] == 41) && retValue_acc == \result) && \valid[17] == 1) && \valid[10] == 1) && unknown-#memory_int-unknown[5][1] == 110) && unknown-#memory_int-unknown[27][0] == 79) && \valid[8] == 1) && \valid[13] == 1) && unknown-#memory_int-unknown[26][2] == 73) && 0 < unknown-#StackHeapBarrier-unknown) && retValue_acc == 1) && cleanupTimeShifts == 4) && #NULL == 0) && 21 == unknown-#length-unknown[14] - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: (((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || !(\old(waterLevel) == 2)) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || 0 == systemActive) || (\old(waterLevel) == waterLevel && pumpRunning == 1))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 527]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 380]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || ((pumpRunning == 0 && waterLevel == 1) && tmp == waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && waterLevel == 1) && tmp == waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((\old(waterLevel) == waterLevel && tmp == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 219]: Loop Invariant Derived loop invariant: (((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || !(\old(waterLevel) == 2)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) - InvariantResult [Line: 440]: Loop Invariant Derived loop invariant: ((((!(1 == systemActive) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: ((((!(1 == systemActive) || ((pumpRunning == 0 || !(0 < waterLevel)) && tmp == 1)) || !(waterLevel <= 2)) || waterLevel < 2) || (!(\old(pumpRunning) == 0) && 0 < waterLevel)) && (((!(waterLevel == 1) || ((pumpRunning == 0 || !(0 < waterLevel)) && tmp == 0)) || !(1 == systemActive)) || (!(\old(pumpRunning) == 0) && 0 < waterLevel)) RESULT: Ultimate proved your program to be correct! [2022-11-03 02:09:31,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae67daa4-3e4e-4474-be15-7119594c38b3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE