./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product58.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_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/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_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/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_d51e5f8c-ef54-41e7-a8db-098857524e87/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 5ed8e4dea18b15d78522f05bcbacefb8bf743c0552ef5a7415602905a04fdc4c --- 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 15:14:16,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:14:16,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:14:16,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:14:16,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:14:16,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:14:16,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:14:16,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:14:16,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:14:16,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:14:16,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:14:16,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:14:16,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:14:16,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:14:16,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:14:16,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:14:16,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:14:16,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:14:16,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:14:16,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:14:16,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:14:16,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:14:16,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:14:16,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:14:16,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:14:16,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:14:16,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:14:16,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:14:16,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:14:16,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:14:16,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:14:16,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:14:16,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:14:16,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:14:16,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:14:16,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:14:16,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:14:16,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:14:16,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:14:16,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:14:16,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:14:16,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:14:16,195 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:14:16,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:14:16,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:14:16,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:14:16,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:14:16,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:14:16,197 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:14:16,197 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:14:16,198 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:14:16,198 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:14:16,198 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:14:16,199 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:14:16,199 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:14:16,199 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:14:16,199 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:14:16,200 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:14:16,200 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:14:16,200 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:14:16,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:14:16,201 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:14:16,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:14:16,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:14:16,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:14:16,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:14:16,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:14:16,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:14:16,203 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:14:16,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:14:16,203 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:14:16,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:14:16,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:14:16,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:14:16,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:14:16,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:14:16,205 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:14:16,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:14:16,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:14:16,206 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:14:16,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:14:16,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:14:16,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:14:16,207 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_d51e5f8c-ef54-41e7-a8db-098857524e87/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ed8e4dea18b15d78522f05bcbacefb8bf743c0552ef5a7415602905a04fdc4c [2022-11-23 15:14:16,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:14:16,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:14:16,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:14:16,548 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:14:16,548 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:14:16,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c [2022-11-23 15:14:19,706 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:14:20,072 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:14:20,073 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c [2022-11-23 15:14:20,090 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/data/badf820e7/2335065ee1184ce4a211529e51eb7168/FLAG1e199622c [2022-11-23 15:14:20,106 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/data/badf820e7/2335065ee1184ce4a211529e51eb7168 [2022-11-23 15:14:20,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:14:20,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:14:20,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:14:20,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:14:20,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:14:20,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e3c600d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20, skipping insertion in model container [2022-11-23 15:14:20,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:14:20,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:14:20,336 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_d51e5f8c-ef54-41e7-a8db-098857524e87/sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c[1605,1618] [2022-11-23 15:14:20,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:14:20,479 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:14:20,493 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_d51e5f8c-ef54-41e7-a8db-098857524e87/sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c[1605,1618] [2022-11-23 15:14:20,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:14:20,573 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:14:20,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20 WrapperNode [2022-11-23 15:14:20,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:14:20,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:14:20,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:14:20,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:14:20,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,623 INFO L138 Inliner]: procedures = 57, calls = 101, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 215 [2022-11-23 15:14:20,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:14:20,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:14:20,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:14:20,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:14:20,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,672 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:14:20,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:14:20,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:14:20,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:14:20,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (1/1) ... [2022-11-23 15:14:20,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:14:20,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:20,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:14:20,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:14:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:14:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-23 15:14:20,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-23 15:14:20,777 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 15:14:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 15:14:20,777 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 15:14:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 15:14:20,777 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-23 15:14:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-23 15:14:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:14:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:14:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-23 15:14:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-23 15:14:20,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:14:20,779 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-23 15:14:20,779 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-23 15:14:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:14:20,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:14:20,922 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:14:20,928 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:14:21,373 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:14:21,472 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:14:21,472 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:14:21,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:21 BoogieIcfgContainer [2022-11-23 15:14:21,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:14:21,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:14:21,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:14:21,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:14:21,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:14:20" (1/3) ... [2022-11-23 15:14:21,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f95e54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:21, skipping insertion in model container [2022-11-23 15:14:21,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:20" (2/3) ... [2022-11-23 15:14:21,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f95e54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:21, skipping insertion in model container [2022-11-23 15:14:21,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:21" (3/3) ... [2022-11-23 15:14:21,485 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product58.cil.c [2022-11-23 15:14:21,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:14:21,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:14:21,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:14:21,568 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;@5e693e3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:14:21,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:14:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 15:14:21,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:14:21,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:21,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:21,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:21,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:21,591 INFO L85 PathProgramCache]: Analyzing trace with hash -239157303, now seen corresponding path program 1 times [2022-11-23 15:14:21,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:21,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101882260] [2022-11-23 15:14:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:21,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:21,836 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 15:14:21,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:21,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101882260] [2022-11-23 15:14:21,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101882260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:21,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:21,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:14:21,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10901801] [2022-11-23 15:14:21,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:21,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:14:21,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:14:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:14:21,901 INFO L87 Difference]: Start difference. First operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:14:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:22,014 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2022-11-23 15:14:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:14:22,019 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-23 15:14:22,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:22,034 INFO L225 Difference]: With dead ends: 112 [2022-11-23 15:14:22,034 INFO L226 Difference]: Without dead ends: 52 [2022-11-23 15:14:22,041 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 15:14:22,051 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:22,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-23 15:14:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-23 15:14:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.303030303030303) internal successors, (43), 40 states have internal predecessors, (43), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 15:14:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-11-23 15:14:22,097 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 16 [2022-11-23 15:14:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:22,098 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-11-23 15:14:22,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:14:22,099 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-11-23 15:14:22,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:14:22,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:22,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:22,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:14:22,103 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1782890685, now seen corresponding path program 1 times [2022-11-23 15:14:22,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:22,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234638713] [2022-11-23 15:14:22,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:22,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:22,271 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 15:14:22,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:22,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234638713] [2022-11-23 15:14:22,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234638713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:22,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:22,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:14:22,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654570752] [2022-11-23 15:14:22,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:22,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:14:22,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:22,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:14:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:14:22,279 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:14:22,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:22,355 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2022-11-23 15:14:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:14:22,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-23 15:14:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:22,359 INFO L225 Difference]: With dead ends: 81 [2022-11-23 15:14:22,360 INFO L226 Difference]: Without dead ends: 44 [2022-11-23 15:14:22,361 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 15:14:22,362 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:22,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:14:22,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-23 15:14:22,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-23 15:14:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-23 15:14:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2022-11-23 15:14:22,382 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 17 [2022-11-23 15:14:22,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:22,383 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2022-11-23 15:14:22,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:14:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2022-11-23 15:14:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 15:14:22,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:22,386 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 15:14:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:14:22,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:22,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:22,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1551440202, now seen corresponding path program 1 times [2022-11-23 15:14:22,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:22,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013941426] [2022-11-23 15:14:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:22,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:22,618 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 15:14:22,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:22,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013941426] [2022-11-23 15:14:22,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013941426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:22,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:22,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:14:22,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472675290] [2022-11-23 15:14:22,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:22,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:14:22,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:22,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:14:22,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:14:22,622 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:14:22,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:22,780 INFO L93 Difference]: Finished difference Result 126 states and 161 transitions. [2022-11-23 15:14:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:14:22,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-23 15:14:22,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:22,782 INFO L225 Difference]: With dead ends: 126 [2022-11-23 15:14:22,783 INFO L226 Difference]: Without dead ends: 84 [2022-11-23 15:14:22,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:14:22,785 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 37 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:22,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 209 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-23 15:14:22,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2022-11-23 15:14:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 63 states have internal predecessors, (67), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-23 15:14:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2022-11-23 15:14:22,802 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 19 [2022-11-23 15:14:22,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:22,802 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2022-11-23 15:14:22,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:14:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2022-11-23 15:14:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 15:14:22,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:22,804 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 15:14:22,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:14:22,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:22,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:22,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1880661992, now seen corresponding path program 1 times [2022-11-23 15:14:22,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:22,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624151007] [2022-11-23 15:14:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:22,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:23,003 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 15:14:23,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:23,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624151007] [2022-11-23 15:14:23,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624151007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:23,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:23,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:14:23,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669672440] [2022-11-23 15:14:23,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:23,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:14:23,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:23,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:14:23,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:14:23,007 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:14:23,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:23,116 INFO L93 Difference]: Finished difference Result 222 states and 288 transitions. [2022-11-23 15:14:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:14:23,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-23 15:14:23,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:23,123 INFO L225 Difference]: With dead ends: 222 [2022-11-23 15:14:23,124 INFO L226 Difference]: Without dead ends: 144 [2022-11-23 15:14:23,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 15:14:23,134 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 34 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:23,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 129 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:14:23,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-23 15:14:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2022-11-23 15:14:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 93 states have (on average 1.2473118279569892) internal successors, (116), 104 states have internal predecessors, (116), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2022-11-23 15:14:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 172 transitions. [2022-11-23 15:14:23,157 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 172 transitions. Word has length 22 [2022-11-23 15:14:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:23,158 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 172 transitions. [2022-11-23 15:14:23,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:14:23,158 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 172 transitions. [2022-11-23 15:14:23,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 15:14:23,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:23,160 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:23,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:14:23,160 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:23,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash -381716183, now seen corresponding path program 1 times [2022-11-23 15:14:23,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:23,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258998750] [2022-11-23 15:14:23,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:23,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:14:23,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:23,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258998750] [2022-11-23 15:14:23,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258998750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:23,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:23,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:14:23,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507115573] [2022-11-23 15:14:23,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:23,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:14:23,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:23,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:14:23,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:14:23,482 INFO L87 Difference]: Start difference. First operand 140 states and 172 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:14:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:23,725 INFO L93 Difference]: Finished difference Result 396 states and 484 transitions. [2022-11-23 15:14:23,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:14:23,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-11-23 15:14:23,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:23,736 INFO L225 Difference]: With dead ends: 396 [2022-11-23 15:14:23,737 INFO L226 Difference]: Without dead ends: 258 [2022-11-23 15:14:23,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:14:23,741 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 70 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:23,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 220 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:14:23,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-23 15:14:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 227. [2022-11-23 15:14:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 164 states have internal predecessors, (184), 35 states have call successors, (35), 35 states have call predecessors, (35), 39 states have return successors, (47), 37 states have call predecessors, (47), 35 states have call successors, (47) [2022-11-23 15:14:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 266 transitions. [2022-11-23 15:14:23,812 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 266 transitions. Word has length 34 [2022-11-23 15:14:23,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:23,812 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 266 transitions. [2022-11-23 15:14:23,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:14:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 266 transitions. [2022-11-23 15:14:23,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 15:14:23,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:23,821 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:23,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:14:23,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:23,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:23,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1342412146, now seen corresponding path program 1 times [2022-11-23 15:14:23,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:23,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891001581] [2022-11-23 15:14:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:14:24,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:24,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891001581] [2022-11-23 15:14:24,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891001581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:24,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885460337] [2022-11-23 15:14:24,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:24,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:24,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:24,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:24,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:14:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:24,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 15:14:24,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:14:24,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:14:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:14:25,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885460337] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:14:25,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1490989684] [2022-11-23 15:14:25,066 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-23 15:14:25,067 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:14:25,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:14:25,085 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:14:25,086 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:14:27,374 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 114 for LOIs [2022-11-23 15:14:27,392 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 134 for LOIs [2022-11-23 15:14:28,328 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 131 for LOIs [2022-11-23 15:14:29,007 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 43 for LOIs [2022-11-23 15:14:29,014 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 112 for LOIs [2022-11-23 15:14:29,027 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:14:41,200 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2673#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0)) (= ~head~0.offset 0) (<= 2 ~waterLevel~0) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 1) (<= 2 |old(~waterLevel~0)|) (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| ~methaneLevelCritical~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1|) (<= 0 |#StackHeapBarrier|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:14:41,200 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:14:41,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:14:41,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2022-11-23 15:14:41,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666361988] [2022-11-23 15:14:41,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:14:41,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 15:14:41,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:41,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 15:14:41,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=2122, Unknown=0, NotChecked=0, Total=2450 [2022-11-23 15:14:41,204 INFO L87 Difference]: Start difference. First operand 227 states and 266 transitions. Second operand has 24 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 7 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-23 15:14:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:46,132 INFO L93 Difference]: Finished difference Result 956 states and 1247 transitions. [2022-11-23 15:14:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-23 15:14:46,133 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 7 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) Word has length 37 [2022-11-23 15:14:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:46,137 INFO L225 Difference]: With dead ends: 956 [2022-11-23 15:14:46,137 INFO L226 Difference]: Without dead ends: 717 [2022-11-23 15:14:46,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4837 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=1541, Invalid=11569, Unknown=0, NotChecked=0, Total=13110 [2022-11-23 15:14:46,144 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 949 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 802 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 802 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:46,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 344 Invalid, 3230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [802 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 15:14:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-11-23 15:14:46,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 526. [2022-11-23 15:14:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 354 states have (on average 1.1751412429378532) internal successors, (416), 380 states have internal predecessors, (416), 82 states have call successors, (82), 75 states have call predecessors, (82), 89 states have return successors, (110), 88 states have call predecessors, (110), 82 states have call successors, (110) [2022-11-23 15:14:46,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 608 transitions. [2022-11-23 15:14:46,218 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 608 transitions. Word has length 37 [2022-11-23 15:14:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:46,219 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 608 transitions. [2022-11-23 15:14:46,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 7 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-23 15:14:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 608 transitions. [2022-11-23 15:14:46,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 15:14:46,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:46,221 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:46,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:14:46,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:46,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:46,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:46,429 INFO L85 PathProgramCache]: Analyzing trace with hash -235210955, now seen corresponding path program 1 times [2022-11-23 15:14:46,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:46,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039350200] [2022-11-23 15:14:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:46,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:14:46,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:46,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039350200] [2022-11-23 15:14:46,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039350200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:46,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:46,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:14:46,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129274049] [2022-11-23 15:14:46,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:46,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:14:46,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:46,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:14:46,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:14:46,607 INFO L87 Difference]: Start difference. First operand 526 states and 608 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 15:14:46,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:46,733 INFO L93 Difference]: Finished difference Result 1037 states and 1212 transitions. [2022-11-23 15:14:46,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:14:46,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 54 [2022-11-23 15:14:46,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:46,738 INFO L225 Difference]: With dead ends: 1037 [2022-11-23 15:14:46,738 INFO L226 Difference]: Without dead ends: 513 [2022-11-23 15:14:46,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 15:14:46,740 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 37 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:46,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 71 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:14:46,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-11-23 15:14:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 481. [2022-11-23 15:14:46,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 322 states have (on average 1.1428571428571428) internal successors, (368), 347 states have internal predecessors, (368), 76 states have call successors, (76), 71 states have call predecessors, (76), 82 states have return successors, (96), 80 states have call predecessors, (96), 76 states have call successors, (96) [2022-11-23 15:14:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 540 transitions. [2022-11-23 15:14:46,796 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 540 transitions. Word has length 54 [2022-11-23 15:14:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:46,796 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 540 transitions. [2022-11-23 15:14:46,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 15:14:46,797 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 540 transitions. [2022-11-23 15:14:46,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 15:14:46,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:46,799 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:46,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:14:46,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:46,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1208317175, now seen corresponding path program 1 times [2022-11-23 15:14:46,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:46,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878742768] [2022-11-23 15:14:46,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:46,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:14:47,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:47,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878742768] [2022-11-23 15:14:47,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878742768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:47,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986850925] [2022-11-23 15:14:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:47,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:47,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:47,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:47,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:14:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:47,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-23 15:14:47,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:14:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:14:47,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:14:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:14:48,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986850925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:14:48,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [379574284] [2022-11-23 15:14:48,268 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-11-23 15:14:48,269 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:14:48,269 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:14:48,269 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:14:48,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:14:51,645 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 43 for LOIs [2022-11-23 15:14:51,653 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 42 for LOIs [2022-11-23 15:14:51,927 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 38 for LOIs [2022-11-23 15:14:52,148 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 48 for LOIs [2022-11-23 15:14:52,158 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 22 for LOIs [2022-11-23 15:14:52,161 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 24 for LOIs [2022-11-23 15:14:52,185 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:14:57,172 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7893#(and (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 0)) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0)) (= ~head~0.offset 0) (= 1 ~systemActive~0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 1) (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| ~methaneLevelCritical~0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 2147483648)) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:14:57,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:14:57,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:14:57,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 28 [2022-11-23 15:14:57,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605752996] [2022-11-23 15:14:57,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:14:57,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-23 15:14:57,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:57,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-23 15:14:57,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=2738, Unknown=0, NotChecked=0, Total=3080 [2022-11-23 15:14:57,175 INFO L87 Difference]: Start difference. First operand 481 states and 540 transitions. Second operand has 28 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 11 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2022-11-23 15:14:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:59,173 INFO L93 Difference]: Finished difference Result 1614 states and 1886 transitions. [2022-11-23 15:14:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-23 15:14:59,174 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 11 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 65 [2022-11-23 15:14:59,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:59,182 INFO L225 Difference]: With dead ends: 1614 [2022-11-23 15:14:59,182 INFO L226 Difference]: Without dead ends: 1264 [2022-11-23 15:14:59,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 143 SyntacticMatches, 17 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3028 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=818, Invalid=5344, Unknown=0, NotChecked=0, Total=6162 [2022-11-23 15:14:59,186 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 765 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:59,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 466 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 15:14:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-11-23 15:14:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1095. [2022-11-23 15:14:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 738 states have (on average 1.1422764227642277) internal successors, (843), 794 states have internal predecessors, (843), 174 states have call successors, (174), 148 states have call predecessors, (174), 182 states have return successors, (242), 190 states have call predecessors, (242), 174 states have call successors, (242) [2022-11-23 15:14:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1259 transitions. [2022-11-23 15:14:59,331 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1259 transitions. Word has length 65 [2022-11-23 15:14:59,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:59,332 INFO L495 AbstractCegarLoop]: Abstraction has 1095 states and 1259 transitions. [2022-11-23 15:14:59,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 11 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2022-11-23 15:14:59,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1259 transitions. [2022-11-23 15:14:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-23 15:14:59,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:59,338 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:59,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:14:59,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:59,547 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1718429194, now seen corresponding path program 1 times [2022-11-23 15:14:59,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:59,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178549037] [2022-11-23 15:14:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:59,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:15:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 51 proven. 53 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-23 15:15:00,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:15:00,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178549037] [2022-11-23 15:15:00,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178549037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:15:00,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790205565] [2022-11-23 15:15:00,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:15:00,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:15:00,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:15:00,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:15:00,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:15:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:15:00,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-23 15:15:00,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:15:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 81 proven. 42 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:15:01,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:15:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 72 proven. 25 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 15:15:02,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790205565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:15:02,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [200243342] [2022-11-23 15:15:02,543 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-11-23 15:15:02,543 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:15:02,544 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:15:02,544 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:15:02,545 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:15:06,808 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 132 for LOIs [2022-11-23 15:15:06,836 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 50 for LOIs [2022-11-23 15:15:07,235 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 21 for LOIs [2022-11-23 15:15:07,351 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 48 for LOIs [2022-11-23 15:15:07,362 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 22 for LOIs [2022-11-23 15:15:07,364 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 24 for LOIs [2022-11-23 15:15:07,366 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:15:13,961 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12878#(and (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 0)) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0)) (= ~head~0.offset 0) (= 1 ~systemActive~0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 1) (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| ~methaneLevelCritical~0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 2147483648)) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:15:13,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:15:13,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:15:13,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 37 [2022-11-23 15:15:13,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921453081] [2022-11-23 15:15:13,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:15:13,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-23 15:15:13,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:15:13,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-23 15:15:13,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=3969, Unknown=0, NotChecked=0, Total=4422 [2022-11-23 15:15:13,964 INFO L87 Difference]: Start difference. First operand 1095 states and 1259 transitions. Second operand has 37 states, 35 states have (on average 4.571428571428571) internal successors, (160), 36 states have internal predecessors, (160), 22 states have call successors, (36), 8 states have call predecessors, (36), 14 states have return successors, (38), 18 states have call predecessors, (38), 22 states have call successors, (38) [2022-11-23 15:15:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:15:15,171 INFO L93 Difference]: Finished difference Result 1467 states and 1695 transitions. [2022-11-23 15:15:15,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 15:15:15,172 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 4.571428571428571) internal successors, (160), 36 states have internal predecessors, (160), 22 states have call successors, (36), 8 states have call predecessors, (36), 14 states have return successors, (38), 18 states have call predecessors, (38), 22 states have call successors, (38) Word has length 114 [2022-11-23 15:15:15,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:15:15,173 INFO L225 Difference]: With dead ends: 1467 [2022-11-23 15:15:15,173 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:15:15,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 289 SyntacticMatches, 12 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2959 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=773, Invalid=5707, Unknown=0, NotChecked=0, Total=6480 [2022-11-23 15:15:15,178 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 518 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:15:15,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 298 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:15:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:15:15,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:15:15,180 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 15:15:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:15:15,180 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2022-11-23 15:15:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:15:15,181 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:15:15,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 4.571428571428571) internal successors, (160), 36 states have internal predecessors, (160), 22 states have call successors, (36), 8 states have call predecessors, (36), 14 states have return successors, (38), 18 states have call predecessors, (38), 22 states have call successors, (38) [2022-11-23 15:15:15,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:15:15,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:15:15,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:15:15,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:15:15,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 15:15:15,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:15:20,155 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 304 310) no Hoare annotation was computed. [2022-11-23 15:15:20,155 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 304 310) the Hoare annotation is: true [2022-11-23 15:15:20,155 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 93 104) the Hoare annotation is: (let ((.cse0 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0)) (.cse1 (= 0 ~systemActive~0))) (and (or (not (= ~pumpRunning~0 0)) (not (<= 1 ~waterLevel~0)) .cse0 (not (<= ~waterLevel~0 1)) .cse1) (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1))) [2022-11-23 15:15:20,155 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 93 104) no Hoare annotation was computed. [2022-11-23 15:15:20,156 INFO L895 garLoopResultBuilder]: At program point L506(line 506) the Hoare annotation is: (let ((.cse9 (= ~methaneLevelCritical~0 0))) (let ((.cse7 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse8 (not .cse9))) (let ((.cse1 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse6 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (and .cse7 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 1))) (or (and .cse0 .cse8) (and .cse9 (= ~pumpRunning~0 1))))) (.cse3 (< |old(~waterLevel~0)| 2)) (.cse4 (= 0 ~systemActive~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2)))) (and (or (and .cse0 .cse1 (= |timeShift_processEnvironment_~tmp~2#1| 1)) .cse2 .cse3 .cse4 .cse5) (or (not (<= |old(~waterLevel~0)| 1)) .cse6 (and .cse0 .cse7) (not (<= 1 |old(~waterLevel~0)|)) .cse4) (or .cse1 .cse3 .cse8 (not (= |old(~pumpRunning~0)| 1)) .cse4 .cse5) (or .cse6 .cse2 .cse3 .cse4 .cse5))))) [2022-11-23 15:15:20,156 INFO L899 garLoopResultBuilder]: For program point L506-1(line 506) no Hoare annotation was computed. [2022-11-23 15:15:20,156 INFO L899 garLoopResultBuilder]: For program point L284-1(lines 283 302) no Hoare annotation was computed. [2022-11-23 15:15:20,156 INFO L895 garLoopResultBuilder]: At program point L346(lines 346 354) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~pumpRunning~0 0)) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~2#1| 1)) (< |old(~waterLevel~0)| 2) .cse0 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0))) [2022-11-23 15:15:20,157 INFO L895 garLoopResultBuilder]: At program point L342(lines 342 359) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0))) (let ((.cse0 (and .cse1 (= |old(~waterLevel~0)| ~waterLevel~0))) (.cse2 (= 0 ~systemActive~0))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or .cse0 (and (not .cse1) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))))) (< |old(~waterLevel~0)| 2) .cse2 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse2)))) [2022-11-23 15:15:20,157 INFO L899 garLoopResultBuilder]: For program point L512(lines 512 518) no Hoare annotation was computed. [2022-11-23 15:15:20,157 INFO L895 garLoopResultBuilder]: At program point L508(lines 508 521) the Hoare annotation is: (let ((.cse18 (= ~methaneLevelCritical~0 0))) (let ((.cse17 (= ~pumpRunning~0 1)) (.cse4 (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0)) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not .cse18)) (.cse15 (= ~pumpRunning~0 0)) (.cse16 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse0 (not (<= |old(~waterLevel~0)| 1))) (.cse2 (not (<= 1 |old(~waterLevel~0)|))) (.cse13 (and .cse15 .cse16)) (.cse12 (and (or .cse1 .cse18) (or .cse3 (not (= |old(~pumpRunning~0)| 1))))) (.cse14 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse8 (< |old(~waterLevel~0)| 2)) (.cse5 (= 0 ~systemActive~0)) (.cse9 (not (<= |old(~waterLevel~0)| 2))) (.cse11 (not (= ~methaneLevelCritical~0 1))) (.cse10 (not .cse4)) (.cse6 (and .cse15 .cse3)) (.cse7 (and .cse18 .cse17))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (or .cse1 .cse6 .cse7 .cse8 .cse5 .cse9) (or .cse0 .cse1 .cse10 .cse2 .cse11 .cse5) (or .cse8 .cse12 .cse3 .cse4 .cse5 .cse9) (or .cse0 .cse1 .cse13 .cse2 .cse5) (or (and .cse1 .cse14) .cse13 .cse8 .cse12 .cse5 .cse9) (or (and .cse15 .cse14 (= |timeShift_processEnvironment_~tmp~2#1| 1)) .cse8 .cse5 .cse9 (and .cse16 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse11) (or (and .cse4 .cse17) (and .cse10 .cse15)) (or .cse6 .cse7))))))) [2022-11-23 15:15:20,158 INFO L895 garLoopResultBuilder]: At program point L508-1(lines 500 524) the Hoare annotation is: (let ((.cse7 (= ~methaneLevelCritical~0 0))) (let ((.cse10 (not (= |old(~pumpRunning~0)| 0))) (.cse6 (not .cse7)) (.cse2 (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0))) (let ((.cse14 (not (= ~methaneLevelCritical~0 1))) (.cse4 (not .cse2)) (.cse8 (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 0)) (.cse9 (< |old(~waterLevel~0)| 2)) (.cse17 (and (or .cse10 .cse7) (or .cse6 (not (= |old(~pumpRunning~0)| 1))))) (.cse11 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse13 (not (<= |old(~waterLevel~0)| 2))) (.cse15 (not (<= |old(~waterLevel~0)| 1))) (.cse5 (= ~pumpRunning~0 0)) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse16 (not (<= 1 |old(~waterLevel~0)|))) (.cse12 (= 0 ~systemActive~0))) (and (let ((.cse1 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse14))) (or (let ((.cse3 (= ~pumpRunning~0 1))) (and .cse0 .cse1 (or (and .cse2 .cse3) (and .cse4 .cse5)) (or (and .cse5 .cse6) (and .cse7 .cse3)) (or .cse7 (not (= |processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#t~ret13#1| 0))) (or .cse7 (not (= |isMethaneLevelCritical_#res| 0))))) (and .cse4 .cse5 .cse8 .cse6 .cse0 .cse1) .cse9 (and .cse10 .cse5 .cse11 (= |timeShift_processEnvironment_~tmp~2#1| 1)) .cse12 .cse13)) (or .cse15 .cse10 .cse16 .cse6 .cse2 .cse12) (or .cse15 .cse10 .cse16 .cse14 (and .cse4 .cse8) .cse12) (or .cse11 .cse8 .cse9 .cse17 .cse12 .cse13) (or .cse9 .cse17 .cse6 (and .cse11 .cse2) .cse12 .cse13) (or .cse15 .cse10 (and .cse5 .cse0) .cse16 .cse12))))) [2022-11-23 15:15:20,158 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) .cse0 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0))) [2022-11-23 15:15:20,159 INFO L895 garLoopResultBuilder]: At program point L352(line 352) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) .cse0 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0))) [2022-11-23 15:15:20,159 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 280 303) the Hoare annotation is: (let ((.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0) .cse1 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse0) (not (<= 1 |old(~waterLevel~0)|)) .cse1))) [2022-11-23 15:15:20,159 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 280 303) no Hoare annotation was computed. [2022-11-23 15:15:20,159 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-23 15:15:20,160 INFO L895 garLoopResultBuilder]: At program point L357(line 357) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1) .cse2 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) (and .cse0 .cse1) (not (<= 1 |old(~waterLevel~0)|)) .cse2))) [2022-11-23 15:15:20,160 INFO L895 garLoopResultBuilder]: At program point L357-1(lines 338 362) the Hoare annotation is: (let ((.cse9 (= ~methaneLevelCritical~0 0))) (let ((.cse7 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse8 (not .cse9))) (let ((.cse1 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse6 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (and .cse7 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 1))) (or (and .cse0 .cse8) (and .cse9 (= ~pumpRunning~0 1))))) (.cse3 (< |old(~waterLevel~0)| 2)) (.cse4 (= 0 ~systemActive~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2)))) (and (or (and .cse0 .cse1 (= |timeShift_processEnvironment_~tmp~2#1| 1)) .cse2 .cse3 .cse4 .cse5) (or (not (<= |old(~waterLevel~0)| 1)) .cse6 (and .cse0 .cse7) (not (<= 1 |old(~waterLevel~0)|)) .cse4) (or .cse1 .cse3 .cse8 (not (= |old(~pumpRunning~0)| 1)) .cse4 .cse5) (or .cse6 .cse2 .cse3 .cse4 .cse5))))) [2022-11-23 15:15:20,160 INFO L899 garLoopResultBuilder]: For program point L291-1(lines 291 297) no Hoare annotation was computed. [2022-11-23 15:15:20,160 INFO L899 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2022-11-23 15:15:20,161 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 172 201) no Hoare annotation was computed. [2022-11-23 15:15:20,161 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 172 201) the Hoare annotation is: true [2022-11-23 15:15:20,161 INFO L899 garLoopResultBuilder]: For program point L186(lines 186 190) no Hoare annotation was computed. [2022-11-23 15:15:20,161 INFO L902 garLoopResultBuilder]: At program point L186-1(lines 186 190) the Hoare annotation is: true [2022-11-23 15:15:20,161 INFO L902 garLoopResultBuilder]: At program point L182-2(lines 182 196) the Hoare annotation is: true [2022-11-23 15:15:20,161 INFO L902 garLoopResultBuilder]: At program point L178(line 178) the Hoare annotation is: true [2022-11-23 15:15:20,161 INFO L899 garLoopResultBuilder]: For program point L178-1(line 178) no Hoare annotation was computed. [2022-11-23 15:15:20,162 INFO L902 garLoopResultBuilder]: At program point L197(lines 172 201) the Hoare annotation is: true [2022-11-23 15:15:20,162 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 105 113) the Hoare annotation is: true [2022-11-23 15:15:20,162 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 105 113) no Hoare annotation was computed. [2022-11-23 15:15:20,162 INFO L902 garLoopResultBuilder]: At program point L258-2(lines 258 265) the Hoare annotation is: true [2022-11-23 15:15:20,162 INFO L899 garLoopResultBuilder]: For program point L556(lines 556 562) no Hoare annotation was computed. [2022-11-23 15:15:20,163 INFO L895 garLoopResultBuilder]: At program point L556-1(lines 556 562) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (not (= 0 ~systemActive~0)))) (or (and (<= 2 ~waterLevel~0) .cse0 (<= ~waterLevel~0 2) .cse1) (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) .cse0 (<= 1 ~waterLevel~0) .cse1))) [2022-11-23 15:15:20,163 INFO L895 garLoopResultBuilder]: At program point L581(lines 536 583) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse0 (<= ~waterLevel~0 1) .cse1 (<= 1 ~waterLevel~0) .cse2) (and (<= 2 ~waterLevel~0) .cse1 (<= ~waterLevel~0 2) (let ((.cse3 (= ~methaneLevelCritical~0 0))) (or (and .cse0 (not .cse3)) (and .cse3 (= ~pumpRunning~0 1)))) .cse2))) [2022-11-23 15:15:20,163 INFO L895 garLoopResultBuilder]: At program point L548(line 548) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse2 (= ~methaneLevelCritical~0 0)) (.cse1 (<= 2 ~waterLevel~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse5 (not (= 0 ~systemActive~0)))) (or (and .cse0 .cse1 (not .cse2) .cse3 .cse4 .cse5) (and .cse0 (<= ~waterLevel~0 1) .cse3 (<= 1 ~waterLevel~0) .cse5) (and .cse2 .cse1 .cse3 .cse4 .cse5 (= ~pumpRunning~0 1)))) [2022-11-23 15:15:20,163 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-23 15:15:20,163 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:15:20,163 INFO L895 garLoopResultBuilder]: At program point L574-2(lines 566 579) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (not (= 0 ~systemActive~0)))) (or (and (<= 2 ~waterLevel~0) .cse0 (<= ~waterLevel~0 2) .cse1) (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) .cse0 (<= 1 ~waterLevel~0) .cse1))) [2022-11-23 15:15:20,164 INFO L899 garLoopResultBuilder]: For program point L537(lines 536 583) no Hoare annotation was computed. [2022-11-23 15:15:20,164 INFO L895 garLoopResultBuilder]: At program point L558(line 558) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (not (= 0 ~systemActive~0)))) (or (and (<= 2 ~waterLevel~0) .cse0 (<= ~waterLevel~0 2) .cse1) (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) .cse0 (<= 1 ~waterLevel~0) .cse1))) [2022-11-23 15:15:20,164 INFO L902 garLoopResultBuilder]: At program point L587(lines 526 591) the Hoare annotation is: true [2022-11-23 15:15:20,164 INFO L899 garLoopResultBuilder]: For program point L546(lines 546 552) no Hoare annotation was computed. [2022-11-23 15:15:20,164 INFO L899 garLoopResultBuilder]: For program point L546-1(lines 546 552) no Hoare annotation was computed. [2022-11-23 15:15:20,164 INFO L895 garLoopResultBuilder]: At program point L584(lines 535 585) the Hoare annotation is: false [2022-11-23 15:15:20,165 INFO L895 garLoopResultBuilder]: At program point L258(lines 258 265) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~0#1| 1) (= ~waterLevel~0 1) (not (= 0 ~systemActive~0))) [2022-11-23 15:15:20,165 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 312 336) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse2) (or .cse0 .cse1 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse2))) [2022-11-23 15:15:20,165 INFO L899 garLoopResultBuilder]: For program point L320(lines 320 328) no Hoare annotation was computed. [2022-11-23 15:15:20,165 INFO L895 garLoopResultBuilder]: At program point L316(lines 316 333) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse2) (or .cse0 .cse1 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse2))) [2022-11-23 15:15:20,165 INFO L895 garLoopResultBuilder]: At program point L331(line 331) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse1) (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1))) [2022-11-23 15:15:20,166 INFO L899 garLoopResultBuilder]: For program point L331-1(lines 312 336) no Hoare annotation was computed. [2022-11-23 15:15:20,166 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 312 336) no Hoare annotation was computed. [2022-11-23 15:15:20,166 INFO L895 garLoopResultBuilder]: At program point L402(line 402) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse1) (or (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1)) .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1))) [2022-11-23 15:15:20,166 INFO L895 garLoopResultBuilder]: At program point L402-1(line 402) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse1) (or .cse0 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#t~ret13#1| ~methaneLevelCritical~0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1)) (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1))) [2022-11-23 15:15:20,166 INFO L895 garLoopResultBuilder]: At program point L326(line 326) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1) (or .cse0 (not (<= 1 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0)) (not (<= ~waterLevel~0 1)) .cse1))) [2022-11-23 15:15:20,167 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 81 92) no Hoare annotation was computed. [2022-11-23 15:15:20,167 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 81 92) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (= 0 ~systemActive~0))) (and (or (let ((.cse1 (= ~methaneLevelCritical~0 0))) (and (or .cse0 .cse1) (or (not .cse1) (not (= ~pumpRunning~0 1))))) (< |old(~waterLevel~0)| 2) .cse2 .cse3 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse2 .cse3))) [2022-11-23 15:15:20,170 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:15:20,171 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:15:20,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:15:20 BoogieIcfgContainer [2022-11-23 15:15:20,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:15:20,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:15:20,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:15:20,221 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:15:20,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:21" (3/4) ... [2022-11-23 15:15:20,225 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:15:20,230 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-23 15:15:20,230 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-23 15:15:20,230 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-23 15:15:20,230 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-23 15:15:20,231 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-23 15:15:20,231 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:15:20,231 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-23 15:15:20,249 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 53 nodes and edges [2022-11-23 15:15:20,249 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-23 15:15:20,250 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 15:15:20,250 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:15:20,251 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:15:20,279 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(waterLevel) < 2 || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-23 15:15:20,280 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-23 15:15:20,281 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == 1) || ((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive)) && (((((\old(waterLevel) == waterLevel + 1 || \old(waterLevel) < 2) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(pumpRunning) == 0) || ((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) [2022-11-23 15:15:20,281 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) [2022-11-23 15:15:20,282 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive) && (((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && !(methaneLevelCritical == 0))) || (methaneLevelCritical == 0 && pumpRunning == 1)) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(tmp == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && (((((\old(waterLevel) < 2 || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive)) && ((((((!(\old(pumpRunning) == 0) && \old(waterLevel) == waterLevel + 1) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || \old(waterLevel) < 2) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == 1) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((tmp == 0 && pumpRunning == 1) || (!(tmp == 0) && pumpRunning == 0))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) [2022-11-23 15:15:20,283 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((tmp == 0 && pumpRunning == 1) || (!(tmp == 0) && pumpRunning == 0))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) && (methaneLevelCritical == 0 || !(aux-isMethaneLevelCritical()-aux == 0))) && (methaneLevelCritical == 0 || !(\result == 0))) || (((((!(tmp == 0) && pumpRunning == 0) && tmp___0 == 0) && !(methaneLevelCritical == 0)) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1)))) || \old(waterLevel) < 2) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && \old(waterLevel) == waterLevel + 1) && tmp == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 1)) || (!(tmp == 0) && tmp___0 == 0)) || 0 == systemActive)) && (((((\old(waterLevel) == waterLevel + 1 || tmp___0 == 0) || \old(waterLevel) < 2) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && (((((\old(waterLevel) < 2 || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(methaneLevelCritical == 0)) || (\old(waterLevel) == waterLevel + 1 && tmp == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-23 15:15:20,283 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && aux-isMethaneLevelCritical()-aux == methaneLevelCritical) && tmp == 1)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) [2022-11-23 15:15:20,284 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\old(waterLevel) < 2 || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-23 15:15:20,284 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && \old(waterLevel) == waterLevel + 1) && tmp == 1) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-23 15:15:20,327 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:15:20,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:15:20,328 INFO L158 Benchmark]: Toolchain (without parser) took 60212.59ms. Allocated memory was 186.6MB in the beginning and 677.4MB in the end (delta: 490.7MB). Free memory was 153.0MB in the beginning and 288.6MB in the end (delta: -135.6MB). Peak memory consumption was 357.0MB. Max. memory is 16.1GB. [2022-11-23 15:15:20,329 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 136.3MB. Free memory was 101.4MB in the beginning and 101.4MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:15:20,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.43ms. Allocated memory is still 186.6MB. Free memory was 153.0MB in the beginning and 134.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 15:15:20,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.48ms. Allocated memory is still 186.6MB. Free memory was 134.1MB in the beginning and 131.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:15:20,330 INFO L158 Benchmark]: Boogie Preprocessor took 52.78ms. Allocated memory is still 186.6MB. Free memory was 131.1MB in the beginning and 129.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:15:20,330 INFO L158 Benchmark]: RCFGBuilder took 797.85ms. Allocated memory is still 186.6MB. Free memory was 129.9MB in the beginning and 104.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-23 15:15:20,331 INFO L158 Benchmark]: TraceAbstraction took 58742.32ms. Allocated memory was 186.6MB in the beginning and 677.4MB in the end (delta: 490.7MB). Free memory was 103.9MB in the beginning and 294.9MB in the end (delta: -191.1MB). Peak memory consumption was 361.2MB. Max. memory is 16.1GB. [2022-11-23 15:15:20,331 INFO L158 Benchmark]: Witness Printer took 107.30ms. Allocated memory is still 677.4MB. Free memory was 294.9MB in the beginning and 288.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 15:15:20,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 136.3MB. Free memory was 101.4MB in the beginning and 101.4MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 453.43ms. Allocated memory is still 186.6MB. Free memory was 153.0MB in the beginning and 134.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.48ms. Allocated memory is still 186.6MB. Free memory was 134.1MB in the beginning and 131.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.78ms. Allocated memory is still 186.6MB. Free memory was 131.1MB in the beginning and 129.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 797.85ms. Allocated memory is still 186.6MB. Free memory was 129.9MB in the beginning and 104.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 58742.32ms. Allocated memory was 186.6MB in the beginning and 677.4MB in the end (delta: 490.7MB). Free memory was 103.9MB in the beginning and 294.9MB in the end (delta: -191.1MB). Peak memory consumption was 361.2MB. Max. memory is 16.1GB. * Witness Printer took 107.30ms. Allocated memory is still 677.4MB. Free memory was 294.9MB in the beginning and 288.6MB 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: 54]: 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, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.6s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2437 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2417 mSDsluCounter, 1865 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1435 mSDsCounter, 1653 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4431 IncrementalHoareTripleChecker+Invalid, 6084 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1653 mSolverCounterUnsat, 430 mSDtfsCounter, 4431 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 855 GetRequests, 535 SyntacticMatches, 32 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10829 ImplicationChecksByTransitivity, 29.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1095occurred in iteration=8, InterpolantAutomatonStates: 154, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 431 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 35 LocationsWithAnnotation, 1613 PreInvPairs, 1794 NumberOfFragments, 1590 HoareAnnotationTreeSize, 1613 FomulaSimplifications, 5073 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 35 FomulaSimplificationsInter, 18059 FormulaSimplificationTreeSizeReductionInter, 4.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 594 NumberOfCodeBlocks, 594 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 795 ConstructedInterpolants, 0 QuantifiedInterpolants, 3164 SizeOfPredicates, 42 NumberOfNonLiveVariables, 971 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 384/531 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: 338]: Loop Invariant Derived loop invariant: ((((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == 1) || ((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive)) && (((((\old(waterLevel) == waterLevel + 1 || \old(waterLevel) < 2) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(pumpRunning) == 0) || ((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) - InvariantResult [Line: 508]: Loop Invariant Derived loop invariant: ((((((((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive) && (((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && !(methaneLevelCritical == 0))) || (methaneLevelCritical == 0 && pumpRunning == 1)) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(tmp == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && (((((\old(waterLevel) < 2 || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive)) && ((((((!(\old(pumpRunning) == 0) && \old(waterLevel) == waterLevel + 1) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || \old(waterLevel) < 2) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == 1) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((tmp == 0 && pumpRunning == 1) || (!(tmp == 0) && pumpRunning == 0))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((\old(waterLevel) < 2 || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) - InvariantResult [Line: 535]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 258]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 556]: Loop Invariant Derived loop invariant: (((2 <= waterLevel && splverifierCounter == 0) && waterLevel <= 2) && !(0 == systemActive)) || ((((pumpRunning == 0 && waterLevel <= 1) && splverifierCounter == 0) && 1 <= waterLevel) && !(0 == systemActive)) - InvariantResult [Line: 280]: Loop Invariant Derived loop invariant: (((\old(waterLevel) < 2 || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) - InvariantResult [Line: 172]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 402]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && aux-isMethaneLevelCritical()-aux == methaneLevelCritical) && tmp == 1)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 342]: Loop Invariant Derived loop invariant: ((((pumpRunning == \old(pumpRunning) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) - InvariantResult [Line: 316]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) - InvariantResult [Line: 526]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 346]: Loop Invariant Derived loop invariant: ((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && \old(waterLevel) == waterLevel + 1) && tmp == 1) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) - InvariantResult [Line: 258]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && waterLevel == 1) && !(0 == systemActive) - InvariantResult [Line: 536]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && waterLevel <= 1) && splverifierCounter == 0) && 1 <= waterLevel) && !(0 == systemActive)) || ((((2 <= waterLevel && splverifierCounter == 0) && waterLevel <= 2) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) && !(0 == systemActive)) - InvariantResult [Line: 500]: Loop Invariant Derived loop invariant: ((((((((((((((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((tmp == 0 && pumpRunning == 1) || (!(tmp == 0) && pumpRunning == 0))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) && (methaneLevelCritical == 0 || !(aux-isMethaneLevelCritical()-aux == 0))) && (methaneLevelCritical == 0 || !(\result == 0))) || (((((!(tmp == 0) && pumpRunning == 0) && tmp___0 == 0) && !(methaneLevelCritical == 0)) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1)))) || \old(waterLevel) < 2) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && \old(waterLevel) == waterLevel + 1) && tmp == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 1)) || (!(tmp == 0) && tmp___0 == 0)) || 0 == systemActive)) && (((((\old(waterLevel) == waterLevel + 1 || tmp___0 == 0) || \old(waterLevel) < 2) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && (((((\old(waterLevel) < 2 || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(methaneLevelCritical == 0)) || (\old(waterLevel) == waterLevel + 1 && tmp == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) RESULT: Ultimate proved your program to be correct! [2022-11-23 15:15:20,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e5f8c-ef54-41e7-a8db-098857524e87/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