./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68cd47586ea836a40d34f69dc7bca714ffc0af5c5bf2f7fbd8cfbbd6f1019685 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 16:10:54,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:10:54,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:10:54,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:10:54,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:10:54,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:10:54,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:10:54,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:10:54,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:10:54,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:10:54,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:10:54,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:10:54,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:10:54,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:10:54,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:10:54,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:10:54,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:10:54,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:10:54,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:10:54,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:10:54,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:10:54,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:10:54,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:10:54,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:10:54,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:10:54,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:10:54,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:10:54,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:10:54,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:10:54,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:10:54,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:10:54,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:10:54,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:10:54,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:10:54,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:10:54,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:10:54,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:10:54,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:10:54,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:10:54,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:10:54,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:10:54,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 16:10:54,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:10:54,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:10:54,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:10:54,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:10:54,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:10:54,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:10:54,429 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:10:54,429 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:10:54,429 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:10:54,430 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:10:54,431 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:10:54,431 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:10:54,431 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:10:54,432 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:10:54,432 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:10:54,432 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:10:54,433 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:10:54,433 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:10:54,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:10:54,434 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:10:54,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:10:54,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:10:54,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:10:54,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:10:54,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:10:54,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:10:54,437 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:10:54,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:10:54,437 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:10:54,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:10:54,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:10:54,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:10:54,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:10:54,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:10:54,439 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:10:54,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:10:54,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:10:54,440 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:10:54,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:10:54,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:10:54,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:10:54,442 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_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68cd47586ea836a40d34f69dc7bca714ffc0af5c5bf2f7fbd8cfbbd6f1019685 [2022-11-23 16:10:54,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:10:54,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:10:54,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:10:54,776 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:10:54,777 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:10:54,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c [2022-11-23 16:10:57,780 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:10:58,053 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:10:58,054 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c [2022-11-23 16:10:58,065 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/data/7846bb8bb/148763a27e62411baf6c84a501c57a06/FLAG3e7c4e6c6 [2022-11-23 16:10:58,085 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/data/7846bb8bb/148763a27e62411baf6c84a501c57a06 [2022-11-23 16:10:58,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:10:58,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:10:58,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:10:58,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:10:58,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:10:58,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203aa571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58, skipping insertion in model container [2022-11-23 16:10:58,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:10:58,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:10:58,357 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c[9171,9184] [2022-11-23 16:10:58,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:10:58,473 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:10:58,535 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/sv-benchmarks/c/product-lines/minepump_spec4_product59.cil.c[9171,9184] [2022-11-23 16:10:58,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:10:58,614 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:10:58,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58 WrapperNode [2022-11-23 16:10:58,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:10:58,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:10:58,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:10:58,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:10:58,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,674 INFO L138 Inliner]: procedures = 57, calls = 102, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 227 [2022-11-23 16:10:58,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:10:58,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:10:58,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:10:58,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:10:58,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,706 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:10:58,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:10:58,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:10:58,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:10:58,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (1/1) ... [2022-11-23 16:10:58,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:10:58,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:58,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:10:58,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:10:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:10:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-23 16:10:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-23 16:10:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 16:10:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 16:10:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 16:10:58,812 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 16:10:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 16:10:58,812 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 16:10:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-23 16:10:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-23 16:10:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-23 16:10:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-23 16:10:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:10:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-23 16:10:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-23 16:10:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:10:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:10:58,923 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:10:58,925 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:10:59,364 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:10:59,460 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:10:59,461 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 16:10:59,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:59 BoogieIcfgContainer [2022-11-23 16:10:59,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:10:59,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:10:59,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:10:59,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:10:59,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:10:58" (1/3) ... [2022-11-23 16:10:59,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75235b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:59, skipping insertion in model container [2022-11-23 16:10:59,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:58" (2/3) ... [2022-11-23 16:10:59,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75235b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:59, skipping insertion in model container [2022-11-23 16:10:59,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:59" (3/3) ... [2022-11-23 16:10:59,474 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2022-11-23 16:10:59,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:10:59,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:10:59,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:10:59,558 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;@792b023, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:10:59,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:10:59,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 16:10:59,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 16:10:59,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:59,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:59,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:10:59,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:59,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1369029533, now seen corresponding path program 1 times [2022-11-23 16:10:59,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:59,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182334021] [2022-11-23 16:10:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:59,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:59,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:59,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182334021] [2022-11-23 16:10:59,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182334021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:59,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:59,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:10:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327060702] [2022-11-23 16:10:59,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 16:10:59,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:59,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 16:10:59,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 16:10:59,805 INFO L87 Difference]: Start difference. First operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) 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) [2022-11-23 16:10:59,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:59,879 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2022-11-23 16:10:59,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 16:10:59,882 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 [2022-11-23 16:10:59,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:59,893 INFO L225 Difference]: With dead ends: 116 [2022-11-23 16:10:59,893 INFO L226 Difference]: Without dead ends: 54 [2022-11-23 16:10:59,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 16:10:59,901 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:59,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:10:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-23 16:10:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-23 16:10:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 16:10:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2022-11-23 16:10:59,967 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 12 [2022-11-23 16:10:59,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:59,972 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2022-11-23 16:10:59,973 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) [2022-11-23 16:10:59,973 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2022-11-23 16:10:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 16:10:59,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:59,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:59,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:10:59,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:10:59,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:59,977 INFO L85 PathProgramCache]: Analyzing trace with hash -410986028, now seen corresponding path program 1 times [2022-11-23 16:10:59,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:59,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192108659] [2022-11-23 16:10:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:59,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:11:00,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:00,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192108659] [2022-11-23 16:11:00,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192108659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:00,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:00,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:11:00,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478268302] [2022-11-23 16:11:00,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:00,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:11:00,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:00,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:11:00,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:11:00,087 INFO L87 Difference]: Start difference. First operand 54 states and 71 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) [2022-11-23 16:11:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:00,167 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2022-11-23 16:11:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:11:00,168 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 [2022-11-23 16:11:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:00,169 INFO L225 Difference]: With dead ends: 80 [2022-11-23 16:11:00,169 INFO L226 Difference]: Without dead ends: 46 [2022-11-23 16:11:00,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:11:00,171 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:00,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 75 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:11:00,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-23 16:11:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-23 16:11:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.4) internal successors, (42), 38 states have internal predecessors, (42), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-23 16:11:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-11-23 16:11:00,185 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 13 [2022-11-23 16:11:00,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:00,185 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-11-23 16:11:00,186 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) [2022-11-23 16:11:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-11-23 16:11:00,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 16:11:00,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:00,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:00,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:11:00,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:00,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:00,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1528647160, now seen corresponding path program 1 times [2022-11-23 16:11:00,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:00,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083187353] [2022-11-23 16:11:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:00,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:11:00,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:00,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083187353] [2022-11-23 16:11:00,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083187353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:00,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:00,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:11:00,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288669482] [2022-11-23 16:11:00,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:00,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:11:00,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:00,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:11:00,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:11:00,354 INFO L87 Difference]: Start difference. First operand 46 states and 60 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) [2022-11-23 16:11:00,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:00,504 INFO L93 Difference]: Finished difference Result 133 states and 180 transitions. [2022-11-23 16:11:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:11:00,505 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 [2022-11-23 16:11:00,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:00,507 INFO L225 Difference]: With dead ends: 133 [2022-11-23 16:11:00,507 INFO L226 Difference]: Without dead ends: 89 [2022-11-23 16:11:00,508 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 [2022-11-23 16:11:00,510 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 74 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:00,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 126 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:11:00,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-23 16:11:00,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2022-11-23 16:11:00,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 59 states have internal predecessors, (67), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (14), 9 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-23 16:11:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2022-11-23 16:11:00,528 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 16 [2022-11-23 16:11:00,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:00,528 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2022-11-23 16:11:00,529 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) [2022-11-23 16:11:00,529 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2022-11-23 16:11:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 16:11:00,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:00,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:00,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:11:00,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:00,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1293336084, now seen corresponding path program 1 times [2022-11-23 16:11:00,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:00,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218417828] [2022-11-23 16:11:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:11:00,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:00,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218417828] [2022-11-23 16:11:00,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218417828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:00,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:00,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:11:00,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083321828] [2022-11-23 16:11:00,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:00,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:11:00,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:11:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:11:00,772 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2022-11-23 16:11:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:00,964 INFO L93 Difference]: Finished difference Result 222 states and 298 transitions. [2022-11-23 16:11:00,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:11:00,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 [2022-11-23 16:11:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:00,973 INFO L225 Difference]: With dead ends: 222 [2022-11-23 16:11:00,973 INFO L226 Difference]: Without dead ends: 152 [2022-11-23 16:11:00,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:11:00,984 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 66 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:00,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 216 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:11:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-23 16:11:01,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 143. [2022-11-23 16:11:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 101 states have (on average 1.3366336633663367) internal successors, (135), 116 states have internal predecessors, (135), 21 states have call successors, (21), 18 states have call predecessors, (21), 20 states have return successors, (26), 19 states have call predecessors, (26), 21 states have call successors, (26) [2022-11-23 16:11:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 182 transitions. [2022-11-23 16:11:01,035 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 182 transitions. Word has length 19 [2022-11-23 16:11:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:01,036 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 182 transitions. [2022-11-23 16:11:01,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2022-11-23 16:11:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 182 transitions. [2022-11-23 16:11:01,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 16:11:01,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:01,044 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] [2022-11-23 16:11:01,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:11:01,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:01,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:01,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1362301905, now seen corresponding path program 1 times [2022-11-23 16:11:01,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:01,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8400520] [2022-11-23 16:11:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:01,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:11:01,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:01,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8400520] [2022-11-23 16:11:01,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8400520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:01,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:01,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 16:11:01,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610927923] [2022-11-23 16:11:01,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:01,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 16:11:01,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:01,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 16:11:01,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:11:01,428 INFO L87 Difference]: Start difference. First operand 143 states and 182 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:11:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:01,913 INFO L93 Difference]: Finished difference Result 396 states and 525 transitions. [2022-11-23 16:11:01,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 16:11:01,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-11-23 16:11:01,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:01,929 INFO L225 Difference]: With dead ends: 396 [2022-11-23 16:11:01,929 INFO L226 Difference]: Without dead ends: 326 [2022-11-23 16:11:01,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-23 16:11:01,933 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 202 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:01,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 284 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:11:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-23 16:11:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 291. [2022-11-23 16:11:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.3043478260869565) internal successors, (270), 234 states have internal predecessors, (270), 42 states have call successors, (42), 36 states have call predecessors, (42), 41 states have return successors, (55), 40 states have call predecessors, (55), 42 states have call successors, (55) [2022-11-23 16:11:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 367 transitions. [2022-11-23 16:11:02,026 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 367 transitions. Word has length 22 [2022-11-23 16:11:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:02,027 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 367 transitions. [2022-11-23 16:11:02,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 16:11:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 367 transitions. [2022-11-23 16:11:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 16:11:02,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:02,029 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 16:11:02,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:11:02,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:02,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:02,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1017599571, now seen corresponding path program 1 times [2022-11-23 16:11:02,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:02,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459188849] [2022-11-23 16:11:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:02,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:11:02,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:02,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459188849] [2022-11-23 16:11:02,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459188849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:02,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:02,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:11:02,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817873348] [2022-11-23 16:11:02,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:02,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:11:02,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:02,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:11:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:11:02,083 INFO L87 Difference]: Start difference. First operand 291 states and 367 transitions. Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 16:11:02,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:02,218 INFO L93 Difference]: Finished difference Result 554 states and 699 transitions. [2022-11-23 16:11:02,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:11:02,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-23 16:11:02,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:02,221 INFO L225 Difference]: With dead ends: 554 [2022-11-23 16:11:02,221 INFO L226 Difference]: Without dead ends: 214 [2022-11-23 16:11:02,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:11:02,223 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 84 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:02,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 112 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:11:02,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-23 16:11:02,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 196. [2022-11-23 16:11:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 138 states have (on average 1.2753623188405796) internal successors, (176), 157 states have internal predecessors, (176), 28 states have call successors, (28), 25 states have call predecessors, (28), 29 states have return successors, (32), 28 states have call predecessors, (32), 28 states have call successors, (32) [2022-11-23 16:11:02,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 236 transitions. [2022-11-23 16:11:02,253 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 236 transitions. Word has length 47 [2022-11-23 16:11:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:02,254 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 236 transitions. [2022-11-23 16:11:02,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 16:11:02,254 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 236 transitions. [2022-11-23 16:11:02,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-23 16:11:02,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:02,256 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 16:11:02,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:11:02,256 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:02,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:02,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2080281671, now seen corresponding path program 1 times [2022-11-23 16:11:02,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:02,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446560904] [2022-11-23 16:11:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:02,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:11:02,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:02,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446560904] [2022-11-23 16:11:02,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446560904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:02,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:02,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 16:11:02,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670299658] [2022-11-23 16:11:02,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:02,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 16:11:02,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 16:11:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-23 16:11:02,673 INFO L87 Difference]: Start difference. First operand 196 states and 236 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 16:11:03,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:03,088 INFO L93 Difference]: Finished difference Result 321 states and 399 transitions. [2022-11-23 16:11:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 16:11:03,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2022-11-23 16:11:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:03,091 INFO L225 Difference]: With dead ends: 321 [2022-11-23 16:11:03,091 INFO L226 Difference]: Without dead ends: 209 [2022-11-23 16:11:03,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:11:03,095 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 105 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:03,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 218 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:11:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-23 16:11:03,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 173. [2022-11-23 16:11:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 121 states have (on average 1.28099173553719) internal successors, (155), 137 states have internal predecessors, (155), 25 states have call successors, (25), 22 states have call predecessors, (25), 26 states have return successors, (30), 25 states have call predecessors, (30), 25 states have call successors, (30) [2022-11-23 16:11:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 210 transitions. [2022-11-23 16:11:03,142 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 210 transitions. Word has length 44 [2022-11-23 16:11:03,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:03,144 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 210 transitions. [2022-11-23 16:11:03,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 16:11:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 210 transitions. [2022-11-23 16:11:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 16:11:03,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:03,146 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 16:11:03,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:11:03,146 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:03,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1847334260, now seen corresponding path program 1 times [2022-11-23 16:11:03,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:03,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8342399] [2022-11-23 16:11:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:03,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:11:03,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:03,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8342399] [2022-11-23 16:11:03,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8342399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:11:03,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948265377] [2022-11-23 16:11:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:03,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:11:03,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:11:03,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:11:03,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:11:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:03,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-23 16:11:03,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:11:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 16:11:04,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:11:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 16:11:04,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948265377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:11:04,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1402124181] [2022-11-23 16:11:04,741 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-23 16:11:04,741 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:11:04,745 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:11:04,751 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:11:04,752 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:11:08,400 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 50 for LOIs [2022-11-23 16:11:08,410 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 45 for LOIs [2022-11-23 16:11:08,723 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 24 for LOIs [2022-11-23 16:11:08,757 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 30 for LOIs [2022-11-23 16:11:08,760 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:11:13,321 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4695#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~3#1|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| ~waterLevel~0) (<= 0 |old(~pumpRunning~0)|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (<= ~pumpRunning~0 1) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~3#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| |timeShift_getWaterLevel_#res#1|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 16:11:13,322 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:11:13,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:11:13,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 28 [2022-11-23 16:11:13,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337142193] [2022-11-23 16:11:13,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:11:13,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-23 16:11:13,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:13,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-23 16:11:13,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2663, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 16:11:13,326 INFO L87 Difference]: Start difference. First operand 173 states and 210 transitions. Second operand has 28 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 12 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-23 16:11:16,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:16,439 INFO L93 Difference]: Finished difference Result 595 states and 782 transitions. [2022-11-23 16:11:16,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-23 16:11:16,440 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 12 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) Word has length 47 [2022-11-23 16:11:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:16,442 INFO L225 Difference]: With dead ends: 595 [2022-11-23 16:11:16,443 INFO L226 Difference]: Without dead ends: 444 [2022-11-23 16:11:16,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3504 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1216, Invalid=8486, Unknown=0, NotChecked=0, Total=9702 [2022-11-23 16:11:16,447 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 820 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:16,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 764 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 16:11:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-23 16:11:16,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 346. [2022-11-23 16:11:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 246 states have (on average 1.2520325203252032) internal successors, (308), 271 states have internal predecessors, (308), 44 states have call successors, (44), 40 states have call predecessors, (44), 55 states have return successors, (67), 51 states have call predecessors, (67), 44 states have call successors, (67) [2022-11-23 16:11:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 419 transitions. [2022-11-23 16:11:16,495 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 419 transitions. Word has length 47 [2022-11-23 16:11:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:16,496 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 419 transitions. [2022-11-23 16:11:16,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 12 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-23 16:11:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 419 transitions. [2022-11-23 16:11:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 16:11:16,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:16,498 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 16:11:16,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:11:16,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 16:11:16,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:16,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:16,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1675977768, now seen corresponding path program 1 times [2022-11-23 16:11:16,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:16,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85524194] [2022-11-23 16:11:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:16,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 16:11:17,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:17,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85524194] [2022-11-23 16:11:17,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85524194] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:11:17,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810411699] [2022-11-23 16:11:17,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:17,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:11:17,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:11:17,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:11:17,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:11:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:17,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 16:11:17,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:11:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 16:11:17,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:11:17,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810411699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:17,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:11:17,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 20 [2022-11-23 16:11:17,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422387781] [2022-11-23 16:11:17,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:17,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:11:17,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:17,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:11:17,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-23 16:11:17,963 INFO L87 Difference]: Start difference. First operand 346 states and 419 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 16:11:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:18,247 INFO L93 Difference]: Finished difference Result 767 states and 960 transitions. [2022-11-23 16:11:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:11:18,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-11-23 16:11:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:18,251 INFO L225 Difference]: With dead ends: 767 [2022-11-23 16:11:18,251 INFO L226 Difference]: Without dead ends: 451 [2022-11-23 16:11:18,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-11-23 16:11:18,253 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 66 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:18,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 265 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:11:18,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-23 16:11:18,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 421. [2022-11-23 16:11:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 304 states have (on average 1.256578947368421) internal successors, (382), 332 states have internal predecessors, (382), 52 states have call successors, (52), 47 states have call predecessors, (52), 64 states have return successors, (81), 61 states have call predecessors, (81), 52 states have call successors, (81) [2022-11-23 16:11:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 515 transitions. [2022-11-23 16:11:18,318 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 515 transitions. Word has length 72 [2022-11-23 16:11:18,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:18,320 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 515 transitions. [2022-11-23 16:11:18,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 16:11:18,321 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 515 transitions. [2022-11-23 16:11:18,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 16:11:18,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:18,324 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:18,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:11:18,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:11:18,530 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:18,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:18,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1673814336, now seen corresponding path program 2 times [2022-11-23 16:11:18,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:18,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868216076] [2022-11-23 16:11:18,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:18,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 53 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 16:11:19,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:19,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868216076] [2022-11-23 16:11:19,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868216076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:11:19,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317178427] [2022-11-23 16:11:19,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:11:19,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:11:19,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:11:19,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:11:19,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:11:19,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 16:11:19,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:11:19,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 16:11:19,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:11:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-23 16:11:19,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:11:19,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317178427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:19,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:11:19,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 20 [2022-11-23 16:11:19,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140438719] [2022-11-23 16:11:19,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:19,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:11:19,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:19,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:11:19,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-11-23 16:11:19,533 INFO L87 Difference]: Start difference. First operand 421 states and 515 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 16:11:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:19,661 INFO L93 Difference]: Finished difference Result 661 states and 837 transitions. [2022-11-23 16:11:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:11:19,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 89 [2022-11-23 16:11:19,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:19,665 INFO L225 Difference]: With dead ends: 661 [2022-11-23 16:11:19,665 INFO L226 Difference]: Without dead ends: 398 [2022-11-23 16:11:19,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-11-23 16:11:19,667 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 46 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:19,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 135 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:11:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-23 16:11:19,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 359. [2022-11-23 16:11:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 258 states have (on average 1.197674418604651) internal successors, (309), 281 states have internal predecessors, (309), 45 states have call successors, (45), 42 states have call predecessors, (45), 55 states have return successors, (73), 51 states have call predecessors, (73), 45 states have call successors, (73) [2022-11-23 16:11:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 427 transitions. [2022-11-23 16:11:19,734 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 427 transitions. Word has length 89 [2022-11-23 16:11:19,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:19,735 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 427 transitions. [2022-11-23 16:11:19,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 16:11:19,736 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 427 transitions. [2022-11-23 16:11:19,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 16:11:19,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:19,737 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:19,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:11:19,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 16:11:19,944 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:19,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1410569396, now seen corresponding path program 3 times [2022-11-23 16:11:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:19,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807954857] [2022-11-23 16:11:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:19,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 1 proven. 83 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 16:11:20,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:20,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807954857] [2022-11-23 16:11:20,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807954857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:11:20,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480378097] [2022-11-23 16:11:20,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:11:20,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:11:20,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:11:20,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:11:20,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:11:20,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:11:20,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:11:20,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 16:11:20,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:11:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-23 16:11:21,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:11:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-23 16:11:21,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480378097] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:11:21,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1765885086] [2022-11-23 16:11:21,159 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-23 16:11:21,159 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:11:21,159 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:11:21,159 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:11:21,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:11:23,990 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 50 for LOIs [2022-11-23 16:11:24,001 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 45 for LOIs [2022-11-23 16:11:24,350 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 24 for LOIs [2022-11-23 16:11:24,381 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 30 for LOIs [2022-11-23 16:11:24,383 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:11:28,534 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10752#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~3#1|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| ~waterLevel~0) (<= 0 |old(~pumpRunning~0)|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (<= ~pumpRunning~0 1) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~3#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| |timeShift_getWaterLevel_#res#1|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 16:11:28,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:11:28,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:11:28,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6, 6] total 23 [2022-11-23 16:11:28,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384595485] [2022-11-23 16:11:28,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:11:28,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 16:11:28,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 16:11:28,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=2182, Unknown=0, NotChecked=0, Total=2450 [2022-11-23 16:11:28,537 INFO L87 Difference]: Start difference. First operand 359 states and 427 transitions. Second operand has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-23 16:11:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:31,332 INFO L93 Difference]: Finished difference Result 1037 states and 1283 transitions. [2022-11-23 16:11:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-23 16:11:31,333 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 9 states have call successors, (14) Word has length 91 [2022-11-23 16:11:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:31,342 INFO L225 Difference]: With dead ends: 1037 [2022-11-23 16:11:31,343 INFO L226 Difference]: Without dead ends: 708 [2022-11-23 16:11:31,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3589 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1357, Invalid=8543, Unknown=0, NotChecked=0, Total=9900 [2022-11-23 16:11:31,348 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 774 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:31,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 572 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 16:11:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-11-23 16:11:31,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 605. [2022-11-23 16:11:31,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 436 states have (on average 1.1903669724770642) internal successors, (519), 477 states have internal predecessors, (519), 75 states have call successors, (75), 66 states have call predecessors, (75), 93 states have return successors, (127), 86 states have call predecessors, (127), 75 states have call successors, (127) [2022-11-23 16:11:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 721 transitions. [2022-11-23 16:11:31,437 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 721 transitions. Word has length 91 [2022-11-23 16:11:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:31,438 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 721 transitions. [2022-11-23 16:11:31,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-23 16:11:31,439 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 721 transitions. [2022-11-23 16:11:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-23 16:11:31,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:31,447 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 16:11:31,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 16:11:31,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:11:31,655 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:31,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1695781844, now seen corresponding path program 2 times [2022-11-23 16:11:31,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:31,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428173169] [2022-11-23 16:11:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:31,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 52 proven. 41 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 16:11:32,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:32,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428173169] [2022-11-23 16:11:32,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428173169] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:11:32,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267400395] [2022-11-23 16:11:32,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:11:32,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:11:32,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:11:32,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:11:32,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 16:11:32,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 16:11:32,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:11:32,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-23 16:11:32,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:11:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 43 proven. 21 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-23 16:11:32,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:11:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 53 proven. 5 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-23 16:11:33,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267400395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:11:33,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1383693442] [2022-11-23 16:11:33,419 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-23 16:11:33,419 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:11:33,419 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:11:33,419 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:11:33,420 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:11:36,630 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 125 for LOIs [2022-11-23 16:11:36,642 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 44 for LOIs [2022-11-23 16:11:36,939 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 59 for LOIs [2022-11-23 16:11:37,135 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2022-11-23 16:11:37,137 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 29 for LOIs [2022-11-23 16:11:37,139 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:11:44,353 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14056#(and (<= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483647) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~3#1|) (<= 0 (+ |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483648)) (= |timeShift_getWaterLevel_~retValue_acc~8#1| ~waterLevel~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (<= 1 ~systemActive~0) (<= |#NULL.offset| 0) (<= ~methaneLevelCritical~0 0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~3#1|) (<= 0 ~head~0.base) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 0) (<= 0 ~methaneLevelCritical~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= ~head~0.base 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |timeShift_getWaterLevel_~retValue_acc~8#1| |timeShift_getWaterLevel_#res#1|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 16:11:44,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:11:44,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:11:44,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 10] total 35 [2022-11-23 16:11:44,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123805926] [2022-11-23 16:11:44,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:11:44,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 16:11:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:44,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 16:11:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=454, Invalid=3578, Unknown=0, NotChecked=0, Total=4032 [2022-11-23 16:11:44,361 INFO L87 Difference]: Start difference. First operand 605 states and 721 transitions. Second operand has 35 states, 33 states have (on average 4.878787878787879) internal successors, (161), 32 states have internal predecessors, (161), 13 states have call successors, (22), 9 states have call predecessors, (22), 12 states have return successors, (24), 14 states have call predecessors, (24), 11 states have call successors, (24) [2022-11-23 16:11:45,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:45,759 INFO L93 Difference]: Finished difference Result 699 states and 834 transitions. [2022-11-23 16:11:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 16:11:45,760 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.878787878787879) internal successors, (161), 32 states have internal predecessors, (161), 13 states have call successors, (22), 9 states have call predecessors, (22), 12 states have return successors, (24), 14 states have call predecessors, (24), 11 states have call successors, (24) Word has length 94 [2022-11-23 16:11:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:45,762 INFO L225 Difference]: With dead ends: 699 [2022-11-23 16:11:45,762 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 16:11:45,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 239 SyntacticMatches, 8 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3477 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1010, Invalid=6822, Unknown=0, NotChecked=0, Total=7832 [2022-11-23 16:11:45,765 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 555 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:45,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 341 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:11:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 16:11:45,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 16:11:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:11:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 16:11:45,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2022-11-23 16:11:45,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:45,767 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 16:11:45,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.878787878787879) internal successors, (161), 32 states have internal predecessors, (161), 13 states have call successors, (22), 9 states have call predecessors, (22), 12 states have return successors, (24), 14 states have call predecessors, (24), 11 states have call successors, (24) [2022-11-23 16:11:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 16:11:45,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 16:11:45,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 16:11:45,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 16:11:45,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:11:45,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 16:11:49,898 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 309 316) the Hoare annotation is: (= ~pumpRunning~0 |old(~pumpRunning~0)|) [2022-11-23 16:11:49,898 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 309 316) no Hoare annotation was computed. [2022-11-23 16:11:49,898 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 224 230) no Hoare annotation was computed. [2022-11-23 16:11:49,898 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 224 230) the Hoare annotation is: true [2022-11-23 16:11:49,899 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 549 560) the Hoare annotation is: true [2022-11-23 16:11:49,899 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 549 560) no Hoare annotation was computed. [2022-11-23 16:11:49,899 INFO L899 garLoopResultBuilder]: For program point L449(line 449) no Hoare annotation was computed. [2022-11-23 16:11:49,899 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 428 457) no Hoare annotation was computed. [2022-11-23 16:11:49,899 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 428 457) the Hoare annotation is: true [2022-11-23 16:11:49,899 INFO L899 garLoopResultBuilder]: For program point L442(lines 442 446) no Hoare annotation was computed. [2022-11-23 16:11:49,899 INFO L902 garLoopResultBuilder]: At program point L442-1(lines 442 446) the Hoare annotation is: true [2022-11-23 16:11:49,899 INFO L902 garLoopResultBuilder]: At program point L438-2(lines 438 452) the Hoare annotation is: true [2022-11-23 16:11:49,899 INFO L902 garLoopResultBuilder]: At program point L434(line 434) the Hoare annotation is: true [2022-11-23 16:11:49,899 INFO L899 garLoopResultBuilder]: For program point L434-1(line 434) no Hoare annotation was computed. [2022-11-23 16:11:49,900 INFO L902 garLoopResultBuilder]: At program point L453(lines 428 457) the Hoare annotation is: true [2022-11-23 16:11:49,900 INFO L895 garLoopResultBuilder]: At program point L630(line 630) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= 0 ~systemActive~0))))) [2022-11-23 16:11:49,900 INFO L895 garLoopResultBuilder]: At program point L272(line 272) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= 0 ~systemActive~0))))) [2022-11-23 16:11:49,900 INFO L895 garLoopResultBuilder]: At program point L268(line 268) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= |old(~waterLevel~0)| 2))) (.cse2 (not (<= 2 |old(~waterLevel~0)|))) (.cse3 (not (= |old(~pumpRunning~0)| 0)))) (and (or (and (not (= ~pumpRunning~0 0)) (<= 1 |timeShift_processEnvironment_~tmp~3#1|) (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse3 (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse3 .cse0 .cse1 .cse2) (or .cse3 (not (= 0 ~systemActive~0))))) [2022-11-23 16:11:49,901 INFO L899 garLoopResultBuilder]: For program point L103(lines 103 109) no Hoare annotation was computed. [2022-11-23 16:11:49,901 INFO L895 garLoopResultBuilder]: At program point L99(lines 99 112) the Hoare annotation is: (let ((.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2))) (.cse6 (not (<= 2 |old(~waterLevel~0)|))) (.cse8 (not (= 0 ~systemActive~0))) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse9 (not (= |old(~waterLevel~0)| 1))) (.cse3 (not (= 1 ~systemActive~0))) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| ~waterLevel~0)) (.cse2 (= ~waterLevel~0 1))) (and (or (and .cse0 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse1 .cse2) .cse3 (and .cse4 .cse1) .cse5 .cse6) (or .cse7 (and .cse0 .cse4) .cse8) (or .cse7 .cse9 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 1) .cse8) (or .cse7 .cse3 .cse4 .cse5 .cse6) (or .cse7 (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1|) .cse8 .cse6) (or .cse7 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 0) (not (= |old(~waterLevel~0)| 0)) .cse8) (or .cse7 .cse9 .cse3 (and .cse0 .cse1 .cse2)))) [2022-11-23 16:11:49,901 INFO L895 garLoopResultBuilder]: At program point L99-1(lines 91 115) the Hoare annotation is: (let ((.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2))) (.cse6 (not (<= 2 |old(~waterLevel~0)|))) (.cse9 (not (= |old(~waterLevel~0)| 1))) (.cse3 (not (= 1 ~systemActive~0))) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| ~waterLevel~0)) (.cse2 (= ~waterLevel~0 1)) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse8 (not (= 0 ~systemActive~0)))) (and (or (and .cse0 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse1 .cse2) .cse3 (and .cse4 .cse1) .cse5 .cse6) (or .cse7 (and .cse0 .cse4) .cse8) (or .cse7 .cse9 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 1) .cse8) (or .cse7 .cse3 .cse4 .cse5 .cse6) (or .cse7 (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1|) .cse8 .cse6) (or .cse7 .cse9 .cse3 (and .cse0 .cse1 .cse2)) (or .cse7 (not (= |old(~waterLevel~0)| 0)) .cse8 (and (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 0))))) [2022-11-23 16:11:49,901 INFO L895 garLoopResultBuilder]: At program point L277(line 277) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 (= ~waterLevel~0 1))) (or (and .cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= 0 ~systemActive~0))))) [2022-11-23 16:11:49,902 INFO L895 garLoopResultBuilder]: At program point L277-1(lines 258 282) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~waterLevel~0 1)) (.cse1 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (= |old(~waterLevel~0)| ~waterLevel~0) (and .cse1 .cse2 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse3) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse1 (not (= |old(~waterLevel~0)| 1)) .cse0 (and .cse2 .cse3)) (or .cse1 (not (= 0 ~systemActive~0))))) [2022-11-23 16:11:49,902 INFO L895 garLoopResultBuilder]: At program point L211-1(lines 211 217) the Hoare annotation is: (let ((.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse4 (= ~waterLevel~0 1))) (and (or .cse0 (and .cse1 .cse2) (not (= 0 ~systemActive~0))) (or .cse3 .cse2 (and .cse0 .cse1 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse4) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 (and .cse1 .cse4)))) [2022-11-23 16:11:49,902 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 200 223) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (not (= 0 ~systemActive~0)))) (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (not (= 1 ~systemActive~0))) (.cse5 (and .cse1 .cse2 .cse3))) (and (or .cse0 (and .cse1 .cse2) .cse3) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse4 .cse5) (or .cse4 .cse5 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-23 16:11:49,902 INFO L899 garLoopResultBuilder]: For program point L204-1(lines 203 222) no Hoare annotation was computed. [2022-11-23 16:11:49,902 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 200 223) no Hoare annotation was computed. [2022-11-23 16:11:49,902 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 274) no Hoare annotation was computed. [2022-11-23 16:11:49,903 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2022-11-23 16:11:49,903 INFO L895 garLoopResultBuilder]: At program point L262(lines 262 279) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse3 (= ~waterLevel~0 1)) (.cse4 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (let ((.cse2 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse1 (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|)) (or .cse2 .cse3) (or (not .cse1) (<= 2 ~waterLevel~0)) (or .cse4 .cse2))) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse4 (not (= |old(~waterLevel~0)| 1)) .cse0 (and .cse1 .cse3)) (or .cse4 (not (= 0 ~systemActive~0))))) [2022-11-23 16:11:49,903 INFO L899 garLoopResultBuilder]: For program point L415(lines 415 421) no Hoare annotation was computed. [2022-11-23 16:11:49,903 INFO L895 garLoopResultBuilder]: At program point L415-1(lines 415 421) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) [2022-11-23 16:11:49,903 INFO L895 garLoopResultBuilder]: At program point L180(lines 131 181) the Hoare annotation is: false [2022-11-23 16:11:49,903 INFO L899 garLoopResultBuilder]: For program point L168(lines 168 174) no Hoare annotation was computed. [2022-11-23 16:11:49,904 INFO L895 garLoopResultBuilder]: At program point L168-2(lines 162 175) 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) (and .cse3 .cse0 .cse1 (= ~waterLevel~0 1) .cse2) (and .cse3 .cse1 .cse4)))) [2022-11-23 16:11:49,904 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-23 16:11:49,904 INFO L899 garLoopResultBuilder]: For program point L152(lines 152 158) no Hoare annotation was computed. [2022-11-23 16:11:49,904 INFO L899 garLoopResultBuilder]: For program point L152-1(lines 152 158) no Hoare annotation was computed. [2022-11-23 16:11:49,904 INFO L895 garLoopResultBuilder]: At program point L177(lines 132 179) 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) (and .cse3 .cse0 .cse1 (= ~waterLevel~0 1) .cse2) (and .cse3 .cse1 .cse4)))) [2022-11-23 16:11:49,904 INFO L895 garLoopResultBuilder]: At program point L144(line 144) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 .cse1 (<= ~waterLevel~0 2)) (and .cse2 .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse2 .cse1 (= 0 ~systemActive~0)))) [2022-11-23 16:11:49,904 INFO L895 garLoopResultBuilder]: At program point L417(line 417) the Hoare annotation is: (and (or (not (= ~pumpRunning~0 0)) (= |old(~waterLevel~0)| 1) (and (not (= ~waterLevel~0 1)) (not (= ~waterLevel~0 0))) (= |old(~waterLevel~0)| 0)) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) [2022-11-23 16:11:49,904 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 16:11:49,905 INFO L899 garLoopResultBuilder]: For program point L133(lines 132 179) no Hoare annotation was computed. [2022-11-23 16:11:49,905 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 175) no Hoare annotation was computed. [2022-11-23 16:11:49,905 INFO L895 garLoopResultBuilder]: At program point L509(lines 509 516) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 1) (= |ULTIMATE.start_main_~tmp~7#1| ~systemActive~0)) [2022-11-23 16:11:49,905 INFO L902 garLoopResultBuilder]: At program point L509-2(lines 509 516) the Hoare annotation is: true [2022-11-23 16:11:49,905 INFO L895 garLoopResultBuilder]: At program point L154(line 154) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 .cse1 (<= ~waterLevel~0 2)) (and .cse2 .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse2 .cse1 (= 0 ~systemActive~0)))) [2022-11-23 16:11:49,905 INFO L902 garLoopResultBuilder]: At program point L183(lines 122 187) the Hoare annotation is: true [2022-11-23 16:11:49,905 INFO L899 garLoopResultBuilder]: For program point L142(lines 142 148) no Hoare annotation was computed. [2022-11-23 16:11:49,905 INFO L899 garLoopResultBuilder]: For program point L142-1(lines 142 148) no Hoare annotation was computed. [2022-11-23 16:11:49,906 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 232 256) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))))) [2022-11-23 16:11:49,906 INFO L895 garLoopResultBuilder]: At program point L246(line 246) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0))))) [2022-11-23 16:11:49,906 INFO L895 garLoopResultBuilder]: At program point L240(lines 240 248) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) (and .cse2 (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 1))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and .cse2 (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0))))) [2022-11-23 16:11:49,906 INFO L895 garLoopResultBuilder]: At program point L236(lines 236 253) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))))) [2022-11-23 16:11:49,906 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 232 256) no Hoare annotation was computed. [2022-11-23 16:11:49,906 INFO L895 garLoopResultBuilder]: At program point L251(line 251) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1))) [2022-11-23 16:11:49,907 INFO L899 garLoopResultBuilder]: For program point L251-1(lines 232 256) no Hoare annotation was computed. [2022-11-23 16:11:49,907 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 537 548) no Hoare annotation was computed. [2022-11-23 16:11:49,907 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 537 548) the Hoare annotation is: (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (not (= ~pumpRunning~0 0))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 0 ~systemActive~0))) (or .cse2 .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse2 (= ~waterLevel~0 1)))) [2022-11-23 16:11:49,910 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:49,912 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:11:49,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:11:49 BoogieIcfgContainer [2022-11-23 16:11:49,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:11:49,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:11:49,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:11:49,937 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:11:49,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:59" (3/4) ... [2022-11-23 16:11:49,941 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 16:11:49,946 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-23 16:11:49,946 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-23 16:11:49,947 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-23 16:11:49,947 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-23 16:11:49,947 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-23 16:11:49,947 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 16:11:49,947 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-23 16:11:49,954 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2022-11-23 16:11:49,954 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-23 16:11:49,955 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 16:11:49,956 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 16:11:49,956 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 16:11:49,981 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && !(0 == systemActive)))) && (((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-23 16:11:49,982 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive)) && ((((!(1 == systemActive) || \old(waterLevel) == waterLevel) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) [2022-11-23 16:11:49,982 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(1 == systemActive) || ((((pumpRunning == 0 || waterLevel + 1 <= \old(waterLevel)) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && (!(pumpRunning == 0) || 2 <= waterLevel)) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-23 16:11:49,982 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(1 == systemActive) || \old(waterLevel) == waterLevel) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-23 16:11:49,983 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 == waterLevel)) [2022-11-23 16:11:49,983 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((pumpRunning == 0 && 1 <= tmp) && tmp == waterLevel) && waterLevel == 1) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || 2 <= tmp) || !(0 == systemActive)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || tmp == 0) || !(\old(waterLevel) == 0)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1)) [2022-11-23 16:11:49,984 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((pumpRunning == 0 && 1 <= tmp) && tmp == waterLevel) && waterLevel == 1) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || 2 <= tmp) || !(0 == systemActive)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 0)) || !(0 == systemActive)) || (tmp___0 == 0 && tmp == 0)) [2022-11-23 16:11:49,984 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) && ((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-23 16:11:49,985 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 == waterLevel)) || (pumpRunning == 0 && tmp == 1)) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) [2022-11-23 16:11:50,038 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 16:11:50,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:11:50,039 INFO L158 Benchmark]: Toolchain (without parser) took 51949.94ms. Allocated memory was 140.5MB in the beginning and 553.6MB in the end (delta: 413.1MB). Free memory was 99.8MB in the beginning and 353.8MB in the end (delta: -254.0MB). Peak memory consumption was 159.5MB. Max. memory is 16.1GB. [2022-11-23 16:11:50,039 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 140.5MB. Free memory was 81.8MB in the beginning and 81.6MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:11:50,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 524.43ms. Allocated memory is still 140.5MB. Free memory was 99.4MB in the beginning and 80.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 16:11:50,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.44ms. Allocated memory is still 140.5MB. Free memory was 80.6MB in the beginning and 78.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:11:50,040 INFO L158 Benchmark]: Boogie Preprocessor took 36.17ms. Allocated memory is still 140.5MB. Free memory was 78.5MB in the beginning and 76.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:11:50,041 INFO L158 Benchmark]: RCFGBuilder took 749.85ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 76.8MB in the beginning and 135.2MB in the end (delta: -58.5MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2022-11-23 16:11:50,041 INFO L158 Benchmark]: TraceAbstraction took 50469.59ms. Allocated memory was 182.5MB in the beginning and 553.6MB in the end (delta: 371.2MB). Free memory was 134.2MB in the beginning and 360.1MB in the end (delta: -225.9MB). Peak memory consumption was 319.4MB. Max. memory is 16.1GB. [2022-11-23 16:11:50,041 INFO L158 Benchmark]: Witness Printer took 101.14ms. Allocated memory is still 553.6MB. Free memory was 360.1MB in the beginning and 353.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 16:11:50,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 140.5MB. Free memory was 81.8MB in the beginning and 81.6MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 524.43ms. Allocated memory is still 140.5MB. Free memory was 99.4MB in the beginning and 80.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.44ms. Allocated memory is still 140.5MB. Free memory was 80.6MB in the beginning and 78.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.17ms. Allocated memory is still 140.5MB. Free memory was 78.5MB in the beginning and 76.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 749.85ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 76.8MB in the beginning and 135.2MB in the end (delta: -58.5MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * TraceAbstraction took 50469.59ms. Allocated memory was 182.5MB in the beginning and 553.6MB in the end (delta: 371.2MB). Free memory was 134.2MB in the beginning and 360.1MB in the end (delta: -225.9MB). Peak memory consumption was 319.4MB. Max. memory is 16.1GB. * Witness Printer took 101.14ms. Allocated memory is still 553.6MB. Free memory was 360.1MB in the beginning and 353.8MB in the end (delta: 6.3MB). 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: 630]: 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 8 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.4s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2848 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2806 mSDsluCounter, 3168 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2438 mSDsCounter, 1297 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4402 IncrementalHoareTripleChecker+Invalid, 5699 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1297 mSolverCounterUnsat, 730 mSDtfsCounter, 4402 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1161 GetRequests, 798 SyntacticMatches, 8 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10891 ImplicationChecksByTransitivity, 21.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=605occurred in iteration=11, InterpolantAutomatonStates: 200, 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, 12 MinimizatonAttempts, 385 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 35 LocationsWithAnnotation, 1245 PreInvPairs, 1406 NumberOfFragments, 1169 HoareAnnotationTreeSize, 1245 FomulaSimplifications, 12809 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 35 FomulaSimplificationsInter, 27225 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 959 NumberOfCodeBlocks, 847 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1171 ConstructedInterpolants, 0 QuantifiedInterpolants, 4871 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1485 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 20 InterpolantComputations, 9 PerfectInterpolantSequences, 746/1007 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 258]: Loop Invariant Derived loop invariant: (((((!(1 == systemActive) || \old(waterLevel) == waterLevel) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 415]: Loop Invariant Derived loop invariant: pumpRunning == 0 && splverifierCounter == 0 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: ((((((((((((pumpRunning == 0 && 1 <= tmp) && tmp == waterLevel) && waterLevel == 1) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || 2 <= tmp) || !(0 == systemActive)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || tmp == 0) || !(\old(waterLevel) == 0)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1)) - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: ((((2 == waterLevel && 1 == systemActive) && splverifierCounter == 0) && !(0 == systemActive)) || ((((pumpRunning == 0 && 1 == systemActive) && splverifierCounter == 0) && waterLevel == 1) && !(0 == systemActive))) || ((pumpRunning == 0 && splverifierCounter == 0) && 0 == systemActive) - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && !(0 == systemActive)))) && (((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 211]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive)) && ((((!(1 == systemActive) || \old(waterLevel) == waterLevel) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= tmp) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) - InvariantResult [Line: 236]: Loop Invariant Derived loop invariant: (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 == waterLevel)) - InvariantResult [Line: 630]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) && ((!(1 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 262]: Loop Invariant Derived loop invariant: ((((!(1 == systemActive) || ((((pumpRunning == 0 || waterLevel + 1 <= \old(waterLevel)) && (\old(waterLevel) == waterLevel || waterLevel == 1)) && (!(pumpRunning == 0) || 2 <= waterLevel)) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: ((((((((((((pumpRunning == 0 && 1 <= tmp) && tmp == waterLevel) && waterLevel == 1) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && tmp == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || 2 <= tmp) || !(0 == systemActive)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 0)) || !(0 == systemActive)) || (tmp___0 == 0 && tmp == 0)) - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 428]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 509]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 509]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && 1 == systemActive) && waterLevel == 1) && tmp == systemActive - InvariantResult [Line: 438]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 240]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 == waterLevel)) || (pumpRunning == 0 && tmp == 1)) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) RESULT: Ultimate proved your program to be correct! [2022-11-23 16:11:50,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02810efd-a809-47f7-9e05-0dbb4260ce79/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE