./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/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_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/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_ad52e906-adf1-4824-b4a3-8c83cd429a43/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 4d13ffd2557e7d7902d8a5eac414f9fb7393252d85c14855e86000741be6847f --- 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 15:43:44,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:43:44,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:43:44,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:43:44,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:43:44,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:43:44,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:43:44,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:43:44,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:43:44,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:43:44,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:43:44,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:43:44,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:43:44,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:43:44,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:43:44,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:43:44,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:43:44,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:43:44,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:43:44,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:43:44,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:43:44,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:43:44,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:43:44,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:43:44,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:43:44,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:43:44,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:43:44,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:43:44,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:43:44,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:43:44,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:43:44,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:43:44,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:43:44,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:43:44,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:43:44,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:43:44,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:43:44,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:43:44,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:43:44,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:43:44,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:43:44,706 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:43:44,737 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:43:44,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:43:44,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:43:44,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:43:44,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:43:44,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:43:44,741 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:43:44,741 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:43:44,741 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:43:44,742 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:43:44,742 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:43:44,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:43:44,743 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:43:44,743 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:43:44,744 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:43:44,744 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:43:44,744 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:43:44,745 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:43:44,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:43:44,746 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:43:44,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:43:44,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:43:44,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:43:44,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:43:44,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:43:44,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:43:44,748 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:43:44,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:43:44,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:43:44,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:43:44,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:43:44,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:43:44,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:43:44,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:43:44,751 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:43:44,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:43:44,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:43:44,752 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:43:44,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:43:44,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:43:44,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:43:44,753 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_ad52e906-adf1-4824-b4a3-8c83cd429a43/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d13ffd2557e7d7902d8a5eac414f9fb7393252d85c14855e86000741be6847f [2022-11-23 15:43:45,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:43:45,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:43:45,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:43:45,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:43:45,235 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:43:45,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2022-11-23 15:43:49,127 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:43:49,543 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:43:49,544 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2022-11-23 15:43:49,558 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/data/ccc9049c4/11feb292c9514f7ea3e6f36c4dffd4ba/FLAGb5682976b [2022-11-23 15:43:49,592 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/data/ccc9049c4/11feb292c9514f7ea3e6f36c4dffd4ba [2022-11-23 15:43:49,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:43:49,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:43:49,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:43:49,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:43:49,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:43:49,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:49" (1/1) ... [2022-11-23 15:43:49,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617a14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:49, skipping insertion in model container [2022-11-23 15:43:49,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:49" (1/1) ... [2022-11-23 15:43:49,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:43:49,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:43:49,938 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_ad52e906-adf1-4824-b4a3-8c83cd429a43/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c[1605,1618] [2022-11-23 15:43:50,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:43:50,120 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:43:50,145 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_ad52e906-adf1-4824-b4a3-8c83cd429a43/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c[1605,1618] [2022-11-23 15:43:50,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:43:50,301 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:43:50,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50 WrapperNode [2022-11-23 15:43:50,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:43:50,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:43:50,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:43:50,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:43:50,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (1/1) ... [2022-11-23 15:43:50,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (1/1) ... [2022-11-23 15:43:50,392 INFO L138 Inliner]: procedures = 58, calls = 106, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 227 [2022-11-23 15:43:50,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:43:50,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:43:50,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:43:50,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:43:50,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (1/1) ... [2022-11-23 15:43:50,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (1/1) ... [2022-11-23 15:43:50,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (1/1) ... [2022-11-23 15:43:50,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (1/1) ... [2022-11-23 15:43:50,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (1/1) ... [2022-11-23 15:43:50,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (1/1) ... [2022-11-23 15:43:50,430 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (1/1) ... [2022-11-23 15:43:50,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (1/1) ... [2022-11-23 15:43:50,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:43:50,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:43:50,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:43:50,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:43:50,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (1/1) ... [2022-11-23 15:43:50,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:43:50,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:43:50,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:43:50,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:43:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:43:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-23 15:43:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-23 15:43:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 15:43:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 15:43:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 15:43:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 15:43:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-23 15:43:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-23 15:43:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:43:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:43:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-23 15:43:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-23 15:43:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-23 15:43:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-23 15:43:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-23 15:43:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-23 15:43:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-23 15:43:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-23 15:43:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:43:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-23 15:43:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-23 15:43:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:43:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:43:50,707 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:43:50,711 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:43:51,168 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:43:51,495 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:43:51,496 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:43:51,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:51 BoogieIcfgContainer [2022-11-23 15:43:51,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:43:51,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:43:51,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:43:51,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:43:51,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:43:49" (1/3) ... [2022-11-23 15:43:51,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435b2027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:43:51, skipping insertion in model container [2022-11-23 15:43:51,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:50" (2/3) ... [2022-11-23 15:43:51,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435b2027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:43:51, skipping insertion in model container [2022-11-23 15:43:51,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:51" (3/3) ... [2022-11-23 15:43:51,517 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product62.cil.c [2022-11-23 15:43:51,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:43:51,544 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:43:51,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:43:51,625 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;@2123bfa3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:43:51,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:43:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-23 15:43:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:43:51,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:51,648 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 15:43:51,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:43:51,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:51,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1270636600, now seen corresponding path program 1 times [2022-11-23 15:43:51,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:51,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637891266] [2022-11-23 15:43:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:51,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:51,890 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 15:43:51,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:51,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637891266] [2022-11-23 15:43:51,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637891266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:43:51,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:43:51,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:43:51,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927838180] [2022-11-23 15:43:51,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:43:51,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:43:51,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:51,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:43:51,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:43:51,958 INFO L87 Difference]: Start difference. First operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:43:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:52,105 INFO L93 Difference]: Finished difference Result 148 states and 199 transitions. [2022-11-23 15:43:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:43:52,111 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-23 15:43:52,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:52,128 INFO L225 Difference]: With dead ends: 148 [2022-11-23 15:43:52,128 INFO L226 Difference]: Without dead ends: 70 [2022-11-23 15:43:52,134 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 15:43:52,138 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:52,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:43:52,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-23 15:43:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-23 15:43:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 51 states have internal predecessors, (55), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-23 15:43:52,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2022-11-23 15:43:52,200 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 17 [2022-11-23 15:43:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:52,201 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2022-11-23 15:43:52,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:43:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2022-11-23 15:43:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 15:43:52,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:52,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:43:52,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:43:52,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:43:52,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:52,207 INFO L85 PathProgramCache]: Analyzing trace with hash -867172057, now seen corresponding path program 1 times [2022-11-23 15:43:52,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:52,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543855539] [2022-11-23 15:43:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:52,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:52,444 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 15:43:52,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:52,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543855539] [2022-11-23 15:43:52,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543855539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:43:52,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:43:52,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:43:52,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310303553] [2022-11-23 15:43:52,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:43:52,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:43:52,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:52,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:43:52,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:43:52,449 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:43:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:52,533 INFO L93 Difference]: Finished difference Result 117 states and 151 transitions. [2022-11-23 15:43:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:43:52,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-23 15:43:52,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:52,536 INFO L225 Difference]: With dead ends: 117 [2022-11-23 15:43:52,537 INFO L226 Difference]: Without dead ends: 62 [2022-11-23 15:43:52,538 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 15:43:52,540 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 7 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:52,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 117 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:43:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-23 15:43:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-23 15:43:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 46 states have internal predecessors, (49), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 15:43:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2022-11-23 15:43:52,557 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 18 [2022-11-23 15:43:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:52,558 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2022-11-23 15:43:52,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:43:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2022-11-23 15:43:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 15:43:52,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:52,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:43:52,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:43:52,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:43:52,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:52,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1813213069, now seen corresponding path program 1 times [2022-11-23 15:43:52,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:52,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048017103] [2022-11-23 15:43:52,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:52,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:52,835 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 15:43:52,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:52,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048017103] [2022-11-23 15:43:52,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048017103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:43:52,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:43:52,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:43:52,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052922103] [2022-11-23 15:43:52,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:43:52,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:43:52,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:52,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:43:52,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:43:52,840 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:43:53,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:53,074 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2022-11-23 15:43:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:43:53,075 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-23 15:43:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:53,077 INFO L225 Difference]: With dead ends: 122 [2022-11-23 15:43:53,077 INFO L226 Difference]: Without dead ends: 62 [2022-11-23 15:43:53,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:43:53,080 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 74 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:53,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 83 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:43:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-23 15:43:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-23 15:43:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 46 states have internal predecessors, (48), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 15:43:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2022-11-23 15:43:53,107 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 20 [2022-11-23 15:43:53,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:53,109 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2022-11-23 15:43:53,109 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:43:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2022-11-23 15:43:53,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 15:43:53,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:53,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:43:53,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:43:53,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:43:53,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:53,124 INFO L85 PathProgramCache]: Analyzing trace with hash 347622461, now seen corresponding path program 1 times [2022-11-23 15:43:53,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:53,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325059488] [2022-11-23 15:43:53,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:53,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:53,287 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 15:43:53,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:53,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325059488] [2022-11-23 15:43:53,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325059488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:43:53,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:43:53,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:43:53,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603538748] [2022-11-23 15:43:53,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:43:53,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:43:53,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:53,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:43:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:43:53,292 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 15:43:53,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:53,654 INFO L93 Difference]: Finished difference Result 195 states and 244 transitions. [2022-11-23 15:43:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:43:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2022-11-23 15:43:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:53,664 INFO L225 Difference]: With dead ends: 195 [2022-11-23 15:43:53,664 INFO L226 Difference]: Without dead ends: 135 [2022-11-23 15:43:53,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:43:53,671 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 134 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:53,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 174 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:43:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-23 15:43:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2022-11-23 15:43:53,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 91 states have internal predecessors, (103), 22 states have call successors, (22), 18 states have call predecessors, (22), 23 states have return successors, (29), 24 states have call predecessors, (29), 22 states have call successors, (29) [2022-11-23 15:43:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2022-11-23 15:43:53,738 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 31 [2022-11-23 15:43:53,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:53,739 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2022-11-23 15:43:53,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 15:43:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2022-11-23 15:43:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 15:43:53,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:53,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:43:53,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:43:53,746 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:43:53,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:53,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1589821877, now seen corresponding path program 1 times [2022-11-23 15:43:53,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:53,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787660909] [2022-11-23 15:43:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:53,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:54,041 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 15:43:54,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:54,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787660909] [2022-11-23 15:43:54,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787660909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:43:54,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:43:54,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:43:54,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835064651] [2022-11-23 15:43:54,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:43:54,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:43:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:43:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:43:54,045 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:43:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:54,394 INFO L93 Difference]: Finished difference Result 430 states and 525 transitions. [2022-11-23 15:43:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:43:54,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2022-11-23 15:43:54,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:54,400 INFO L225 Difference]: With dead ends: 430 [2022-11-23 15:43:54,400 INFO L226 Difference]: Without dead ends: 303 [2022-11-23 15:43:54,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:43:54,404 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 114 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:54,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 306 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:43:54,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-23 15:43:54,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 286. [2022-11-23 15:43:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 184 states have (on average 1.1956521739130435) internal successors, (220), 199 states have internal predecessors, (220), 50 states have call successors, (50), 41 states have call predecessors, (50), 51 states have return successors, (67), 53 states have call predecessors, (67), 50 states have call successors, (67) [2022-11-23 15:43:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 337 transitions. [2022-11-23 15:43:54,506 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 337 transitions. Word has length 36 [2022-11-23 15:43:54,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:54,508 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 337 transitions. [2022-11-23 15:43:54,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:43:54,509 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 337 transitions. [2022-11-23 15:43:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-23 15:43:54,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:54,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:43:54,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:43:54,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:43:54,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:54,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1390594626, now seen corresponding path program 1 times [2022-11-23 15:43:54,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:54,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745584118] [2022-11-23 15:43:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:54,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:55,073 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 15:43:55,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:55,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745584118] [2022-11-23 15:43:55,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745584118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:43:55,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:43:55,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 15:43:55,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830790697] [2022-11-23 15:43:55,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:43:55,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:43:55,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:55,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:43:55,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:43:55,078 INFO L87 Difference]: Start difference. First operand 286 states and 337 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 15:43:56,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:56,176 INFO L93 Difference]: Finished difference Result 652 states and 800 transitions. [2022-11-23 15:43:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 15:43:56,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 39 [2022-11-23 15:43:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:56,182 INFO L225 Difference]: With dead ends: 652 [2022-11-23 15:43:56,182 INFO L226 Difference]: Without dead ends: 525 [2022-11-23 15:43:56,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:43:56,185 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 413 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:56,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 297 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:43:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-23 15:43:56,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 492. [2022-11-23 15:43:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 321 states have (on average 1.2211838006230529) internal successors, (392), 346 states have internal predecessors, (392), 88 states have call successors, (88), 67 states have call predecessors, (88), 82 states have return successors, (116), 91 states have call predecessors, (116), 88 states have call successors, (116) [2022-11-23 15:43:56,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 596 transitions. [2022-11-23 15:43:56,290 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 596 transitions. Word has length 39 [2022-11-23 15:43:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:56,291 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 596 transitions. [2022-11-23 15:43:56,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 15:43:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 596 transitions. [2022-11-23 15:43:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-23 15:43:56,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:56,295 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:43:56,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:43:56,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:43:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1237992750, now seen corresponding path program 1 times [2022-11-23 15:43:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:56,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341340989] [2022-11-23 15:43:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:56,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:56,849 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 15:43:56,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:56,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341340989] [2022-11-23 15:43:56,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341340989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:43:56,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64447753] [2022-11-23 15:43:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:56,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:43:56,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:43:56,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:43:56,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:43:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:57,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-23 15:43:57,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:43:57,530 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 15:43:57,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:43:58,291 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 15:43:58,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64447753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:43:58,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1676729686] [2022-11-23 15:43:58,318 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-11-23 15:43:58,318 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:43:58,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:43:58,331 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:43:58,332 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:43:59,143 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 114 for LOIs [2022-11-23 15:43:59,167 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 115 for LOIs [2022-11-23 15:44:01,524 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 112 for LOIs [2022-11-23 15:44:01,852 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 112 for LOIs [2022-11-23 15:44:02,367 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 113 for LOIs [2022-11-23 15:44:02,527 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 44 for LOIs [2022-11-23 15:44:02,537 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:44:20,887 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4687#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= |timeShift_getWaterLevel_~retValue_acc~4#1| |timeShift_getWaterLevel_#res#1|) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= |timeShift_getWaterLevel_~retValue_acc~4#1| ~waterLevel~0) (= (select |#valid| 9) 1) (= (select |#length| 12) 25) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= 30 (select |#length| 4)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~10#1|) (= ~methaneLevelCritical~0 |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1|) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= |timeShift_getWaterLevel_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|) (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= 30 (select |#length| 13)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~10#1|) (= (select |#valid| 14) 1) (= |old(~waterLevel~0)| ~waterLevel~0) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|))' at error location [2022-11-23 15:44:20,887 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:44:20,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:44:20,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 22 [2022-11-23 15:44:20,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937070937] [2022-11-23 15:44:20,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:44:20,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 15:44:20,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:20,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 15:44:20,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2217, Unknown=0, NotChecked=0, Total=2450 [2022-11-23 15:44:20,892 INFO L87 Difference]: Start difference. First operand 492 states and 596 transitions. Second operand has 22 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 5 states have call successors, (14), 3 states have call predecessors, (14), 11 states have return successors, (16), 12 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-23 15:44:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:23,331 INFO L93 Difference]: Finished difference Result 2053 states and 2563 transitions. [2022-11-23 15:44:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-23 15:44:23,335 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 5 states have call successors, (14), 3 states have call predecessors, (14), 11 states have return successors, (16), 12 states have call predecessors, (16), 5 states have call successors, (16) Word has length 44 [2022-11-23 15:44:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:23,353 INFO L225 Difference]: With dead ends: 2053 [2022-11-23 15:44:23,354 INFO L226 Difference]: Without dead ends: 1689 [2022-11-23 15:44:23,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 84 SyntacticMatches, 11 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2390 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=528, Invalid=5792, Unknown=0, NotChecked=0, Total=6320 [2022-11-23 15:44:23,364 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 485 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:23,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 1271 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 15:44:23,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2022-11-23 15:44:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1501. [2022-11-23 15:44:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1000 states have (on average 1.203) internal successors, (1203), 1050 states have internal predecessors, (1203), 262 states have call successors, (262), 206 states have call predecessors, (262), 238 states have return successors, (352), 269 states have call predecessors, (352), 262 states have call successors, (352) [2022-11-23 15:44:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 1817 transitions. [2022-11-23 15:44:23,629 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 1817 transitions. Word has length 44 [2022-11-23 15:44:23,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:23,631 INFO L495 AbstractCegarLoop]: Abstraction has 1501 states and 1817 transitions. [2022-11-23 15:44:23,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 5 states have call successors, (14), 3 states have call predecessors, (14), 11 states have return successors, (16), 12 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-23 15:44:23,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 1817 transitions. [2022-11-23 15:44:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 15:44:23,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:23,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:44:23,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:44:23,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:23,844 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:44:23,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash -260228681, now seen corresponding path program 1 times [2022-11-23 15:44:23,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:23,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014192581] [2022-11-23 15:44:23,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:23,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:24,175 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 15:44:24,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:24,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014192581] [2022-11-23 15:44:24,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014192581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:44:24,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:44:24,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 15:44:24,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343626473] [2022-11-23 15:44:24,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:44:24,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 15:44:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 15:44:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:44:24,181 INFO L87 Difference]: Start difference. First operand 1501 states and 1817 transitions. Second operand has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:44:25,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:25,367 INFO L93 Difference]: Finished difference Result 2688 states and 3393 transitions. [2022-11-23 15:44:25,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-23 15:44:25,368 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-11-23 15:44:25,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:25,383 INFO L225 Difference]: With dead ends: 2688 [2022-11-23 15:44:25,383 INFO L226 Difference]: Without dead ends: 1907 [2022-11-23 15:44:25,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2022-11-23 15:44:25,393 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 184 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:25,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 949 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:44:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2022-11-23 15:44:25,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1635. [2022-11-23 15:44:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1086 states have (on average 1.1869244935543277) internal successors, (1289), 1149 states have internal predecessors, (1289), 284 states have call successors, (284), 226 states have call predecessors, (284), 264 states have return successors, (405), 285 states have call predecessors, (405), 284 states have call successors, (405) [2022-11-23 15:44:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1978 transitions. [2022-11-23 15:44:25,759 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1978 transitions. Word has length 47 [2022-11-23 15:44:25,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:25,759 INFO L495 AbstractCegarLoop]: Abstraction has 1635 states and 1978 transitions. [2022-11-23 15:44:25,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:44:25,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1978 transitions. [2022-11-23 15:44:25,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 15:44:25,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:25,766 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:25,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:44:25,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:44:25,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash -874487163, now seen corresponding path program 1 times [2022-11-23 15:44:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:25,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801520105] [2022-11-23 15:44:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:25,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:44:26,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:26,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801520105] [2022-11-23 15:44:26,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801520105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:44:26,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45686810] [2022-11-23 15:44:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:26,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:26,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:44:26,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:44:26,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:44:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:26,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 15:44:26,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:44:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 15:44:27,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:44:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-23 15:44:27,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45686810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:44:27,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [986139333] [2022-11-23 15:44:27,564 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2022-11-23 15:44:27,564 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:44:27,565 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:44:27,565 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:44:27,566 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:44:31,083 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 114 for LOIs [2022-11-23 15:44:31,100 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 123 for LOIs [2022-11-23 15:44:32,690 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 123 for LOIs [2022-11-23 15:44:33,363 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 123 for LOIs [2022-11-23 15:44:34,480 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 123 for LOIs [2022-11-23 15:44:34,657 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 45 for LOIs [2022-11-23 15:44:34,667 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:44:51,784 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17358#(and (= |timeShift_getWaterLevel_~retValue_acc~4#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~4#1| ~waterLevel~0) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~10#1|) (= |timeShift_getWaterLevel_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|) (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (<= 2 |old(~waterLevel~0)|) (<= ~methaneLevelCritical~0 0) (<= 0 ~head~0.base) (= |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~10#1|) (<= 0 ~methaneLevelCritical~0) (<= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|))' at error location [2022-11-23 15:44:51,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:44:51,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:44:51,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 20 [2022-11-23 15:44:51,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577900001] [2022-11-23 15:44:51,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:44:51,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 15:44:51,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:51,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 15:44:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1974, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 15:44:51,787 INFO L87 Difference]: Start difference. First operand 1635 states and 1978 transitions. Second operand has 20 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-11-23 15:44:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:55,903 INFO L93 Difference]: Finished difference Result 4520 states and 5780 transitions. [2022-11-23 15:44:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-23 15:44:55,905 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) Word has length 75 [2022-11-23 15:44:55,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:55,932 INFO L225 Difference]: With dead ends: 4520 [2022-11-23 15:44:55,932 INFO L226 Difference]: Without dead ends: 3682 [2022-11-23 15:44:55,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 192 SyntacticMatches, 13 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3127 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=933, Invalid=6377, Unknown=0, NotChecked=0, Total=7310 [2022-11-23 15:44:55,942 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1038 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:55,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 505 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 15:44:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3682 states. [2022-11-23 15:44:56,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3682 to 3319. [2022-11-23 15:44:56,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 2188 states have (on average 1.1645338208409506) internal successors, (2548), 2305 states have internal predecessors, (2548), 573 states have call successors, (573), 473 states have call predecessors, (573), 557 states have return successors, (862), 580 states have call predecessors, (862), 573 states have call successors, (862) [2022-11-23 15:44:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 3983 transitions. [2022-11-23 15:44:56,470 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 3983 transitions. Word has length 75 [2022-11-23 15:44:56,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:56,471 INFO L495 AbstractCegarLoop]: Abstraction has 3319 states and 3983 transitions. [2022-11-23 15:44:56,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-11-23 15:44:56,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 3983 transitions. [2022-11-23 15:44:56,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 15:44:56,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:56,476 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:44:56,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:44:56,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:56,682 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:44:56,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:56,683 INFO L85 PathProgramCache]: Analyzing trace with hash -376826429, now seen corresponding path program 1 times [2022-11-23 15:44:56,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:56,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846970208] [2022-11-23 15:44:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:56,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 15:44:57,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:57,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846970208] [2022-11-23 15:44:57,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846970208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:44:57,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033804168] [2022-11-23 15:44:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:57,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:57,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:44:57,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:44:57,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:44:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:57,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 15:44:57,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:44:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:44:57,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:44:57,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033804168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:44:57,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:44:57,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-23 15:44:57,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170397629] [2022-11-23 15:44:57,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:44:57,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:44:57,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:57,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:44:57,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:44:57,438 INFO L87 Difference]: Start difference. First operand 3319 states and 3983 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 15:44:57,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:57,913 INFO L93 Difference]: Finished difference Result 4989 states and 6044 transitions. [2022-11-23 15:44:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:44:57,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2022-11-23 15:44:57,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:57,916 INFO L225 Difference]: With dead ends: 4989 [2022-11-23 15:44:57,916 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:44:57,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:44:57,931 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 50 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:57,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 283 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:44:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:44:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:44:57,933 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 15:44:57,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:44:57,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2022-11-23 15:44:57,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:57,935 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:44:57,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 15:44:57,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:44:57,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:44:57,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:44:57,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:44:58,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:44:58,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:45:20,229 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 751 758) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~pumpRunning~0)| 0) (not (<= ~waterLevel~0 1)) (= 0 ~systemActive~0)) [2022-11-23 15:45:20,229 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 751 758) no Hoare annotation was computed. [2022-11-23 15:45:20,229 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 641 647) no Hoare annotation was computed. [2022-11-23 15:45:20,229 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 641 647) the Hoare annotation is: true [2022-11-23 15:45:20,229 INFO L895 garLoopResultBuilder]: At program point L694(line 694) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= ~waterLevel~0 1)) .cse1) (or (not .cse0) (= ~pumpRunning~0 0) (not (<= ~waterLevel~0 2)) .cse1))) [2022-11-23 15:45:20,229 INFO L899 garLoopResultBuilder]: For program point L694-1(lines 675 699) no Hoare annotation was computed. [2022-11-23 15:45:20,230 INFO L895 garLoopResultBuilder]: At program point L689(line 689) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-23 15:45:20,230 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 675 699) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-23 15:45:20,230 INFO L895 garLoopResultBuilder]: At program point L685(line 685) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-23 15:45:20,231 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 675 699) no Hoare annotation was computed. [2022-11-23 15:45:20,231 INFO L899 garLoopResultBuilder]: For program point L683(lines 683 691) no Hoare annotation was computed. [2022-11-23 15:45:20,231 INFO L895 garLoopResultBuilder]: At program point L679(lines 679 696) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-23 15:45:20,231 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 494 505) the Hoare annotation is: (let ((.cse5 (= ~pumpRunning~0 1)) (.cse0 (not (<= ~waterLevel~0 2))) (.cse1 (not (<= |old(~methaneLevelCritical~0)| 0))) (.cse2 (and (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0))) (.cse3 (not (<= 0 |old(~methaneLevelCritical~0)|))) (.cse4 (= 0 ~systemActive~0))) (and (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2 .cse3 .cse4) (or (<= 1 ~methaneLevelCritical~0) (and (not (<= (+ |old(~methaneLevelCritical~0)| 1) 0)) (not (<= 1 |old(~methaneLevelCritical~0)|))) (<= (+ ~methaneLevelCritical~0 1) 0) .cse0 .cse4 .cse5) (or (not .cse5) .cse0 .cse1 .cse2 (< ~waterLevel~0 2) .cse3 .cse4))) [2022-11-23 15:45:20,232 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 494 505) no Hoare annotation was computed. [2022-11-23 15:45:20,232 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 931 960) no Hoare annotation was computed. [2022-11-23 15:45:20,232 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 931 960) the Hoare annotation is: true [2022-11-23 15:45:20,232 INFO L902 garLoopResultBuilder]: At program point L956(lines 931 960) the Hoare annotation is: true [2022-11-23 15:45:20,237 INFO L899 garLoopResultBuilder]: For program point L952(line 952) no Hoare annotation was computed. [2022-11-23 15:45:20,237 INFO L899 garLoopResultBuilder]: For program point L945(lines 945 949) no Hoare annotation was computed. [2022-11-23 15:45:20,237 INFO L902 garLoopResultBuilder]: At program point L945-1(lines 945 949) the Hoare annotation is: true [2022-11-23 15:45:20,238 INFO L902 garLoopResultBuilder]: At program point L941-2(lines 941 955) the Hoare annotation is: true [2022-11-23 15:45:20,238 INFO L902 garLoopResultBuilder]: At program point L937(line 937) the Hoare annotation is: true [2022-11-23 15:45:20,238 INFO L899 garLoopResultBuilder]: For program point L937-1(line 937) no Hoare annotation was computed. [2022-11-23 15:45:20,238 INFO L899 garLoopResultBuilder]: For program point L81(lines 81 87) no Hoare annotation was computed. [2022-11-23 15:45:20,239 INFO L895 garLoopResultBuilder]: At program point L77(lines 77 90) the Hoare annotation is: (let ((.cse8 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not .cse8)) (.cse6 (not (< |old(~waterLevel~0)| 2))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse3 (<= ~waterLevel~0 1)) (.cse7 (<= |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1| 1)) (.cse4 (= 0 ~systemActive~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2)))) (and (or (and (not .cse0) .cse1 (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1))) .cse2 (and .cse3 .cse1) .cse4 .cse5) (or .cse2 .cse6 (and .cse0 .cse7) .cse4) (or .cse8 .cse4 (= ~waterLevel~0 1) .cse5 (not (<= 2 |old(~waterLevel~0)|))) (or .cse2 (= ~methaneLevelCritical~0 0) .cse6 .cse4) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse7 (let ((.cse9 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse9) .cse1) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse9)))) (and .cse0 .cse3 .cse7) .cse8 .cse4 .cse5)))) [2022-11-23 15:45:20,239 INFO L895 garLoopResultBuilder]: At program point L77-1(lines 62 94) the Hoare annotation is: (let ((.cse5 (= |old(~pumpRunning~0)| 0)) (.cse8 (< |old(~waterLevel~0)| 2))) (let ((.cse1 (not .cse8)) (.cse4 (= ~pumpRunning~0 0)) (.cse0 (not .cse5)) (.cse3 (= 0 ~systemActive~0)) (.cse6 (not (<= |old(~waterLevel~0)| 2))) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse4 .cse1 .cse3) (or .cse5 .cse3 .cse6 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse7 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse7) .cse2) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse7)))) (and .cse4 (<= ~waterLevel~0 1))) (or .cse8 .cse5 .cse3 (= ~waterLevel~0 1) .cse6) (or .cse0 (= ~methaneLevelCritical~0 0) (and .cse2 (or (not .cse4) (not (= |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1| 0)))) .cse3 .cse6) (or .cse0 (not (<= ~methaneLevelCritical~0 0)) (not (<= 0 ~methaneLevelCritical~0)) .cse3 .cse6 (and .cse2 (= ~pumpRunning~0 1)) (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-23 15:45:20,239 INFO L899 garLoopResultBuilder]: For program point L709(lines 709 717) no Hoare annotation was computed. [2022-11-23 15:45:20,240 INFO L895 garLoopResultBuilder]: At program point L69(line 69) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (= ~pumpRunning~0 0)) (.cse7 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (< |old(~waterLevel~0)| 2)) (.cse0 (not .cse4)) (.cse3 (= 0 ~systemActive~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 .cse1 (not .cse2) .cse3) (or .cse4 .cse3 .cse5 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse6 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse6) .cse7) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse6)))) (and .cse1 (<= ~waterLevel~0 1))) (or .cse0 .cse7 .cse3 .cse5) (or .cse2 .cse4 .cse3 (= ~waterLevel~0 1) .cse5) (or .cse0 (not (<= ~methaneLevelCritical~0 0)) (not (<= 0 ~methaneLevelCritical~0)) .cse3 .cse5 (= ~pumpRunning~0 1) (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-23 15:45:20,240 INFO L899 garLoopResultBuilder]: For program point L69-1(line 69) no Hoare annotation was computed. [2022-11-23 15:45:20,240 INFO L899 garLoopResultBuilder]: For program point L705(lines 705 722) no Hoare annotation was computed. [2022-11-23 15:45:20,240 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (or (= 0 ~systemActive~0) (not (<= |old(~waterLevel~0)| 2))) [2022-11-23 15:45:20,240 INFO L899 garLoopResultBuilder]: For program point L628-1(lines 628 634) no Hoare annotation was computed. [2022-11-23 15:45:20,240 INFO L895 garLoopResultBuilder]: At program point L715(line 715) the Hoare annotation is: (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~pumpRunning~0 0)) (let ((.cse0 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse0) (= |old(~waterLevel~0)| ~waterLevel~0)) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse0)))) (= 0 ~systemActive~0) (not (<= |old(~waterLevel~0)| 2))) [2022-11-23 15:45:20,240 INFO L895 garLoopResultBuilder]: At program point L711(line 711) the Hoare annotation is: (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~pumpRunning~0 0)) (let ((.cse0 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse0) (= |old(~waterLevel~0)| ~waterLevel~0)) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse0)))) (= 0 ~systemActive~0) (not (<= |old(~waterLevel~0)| 2))) [2022-11-23 15:45:20,241 INFO L895 garLoopResultBuilder]: At program point L71(lines 71 91) the Hoare annotation is: (let ((.cse7 (= |old(~pumpRunning~0)| 0))) (let ((.cse8 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse10 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (not .cse7)) (.cse1 (= ~pumpRunning~0 0)) (.cse11 (<= ~waterLevel~0 1)) (.cse2 (= 0 ~systemActive~0))) (let ((.cse0 (and .cse5 .cse1 .cse11 (not .cse2))) (.cse6 (< |old(~waterLevel~0)| 2)) (.cse4 (and .cse8 .cse1 .cse11 .cse10)) (.cse3 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 (not .cse1) (= ~methaneLevelCritical~0 0) .cse2 .cse3 (not (= |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1| 0))) (or .cse4 .cse5 (not .cse6) .cse2) (or .cse0 .cse7 .cse2 .cse3 (and .cse8 (let ((.cse9 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse9) .cse10) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse9))))) (or .cse6 .cse7 .cse2 (= ~waterLevel~0 1) .cse3) (or .cse4 .cse5 (and .cse10 (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1))) .cse2 .cse3))))) [2022-11-23 15:45:20,241 INFO L895 garLoopResultBuilder]: At program point L707(line 707) the Hoare annotation is: (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~pumpRunning~0 0)) (let ((.cse0 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse0) (= |old(~waterLevel~0)| ~waterLevel~0)) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse0)))) (= 0 ~systemActive~0) (not (<= |old(~waterLevel~0)| 2))) [2022-11-23 15:45:20,241 INFO L899 garLoopResultBuilder]: For program point L707-1(line 707) no Hoare annotation was computed. [2022-11-23 15:45:20,241 INFO L895 garLoopResultBuilder]: At program point L720(line 720) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (<= |old(~waterLevel~0)| 2)))) (and (or (= |old(~pumpRunning~0)| 0) .cse0 .cse1) (or (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse0 .cse1))) [2022-11-23 15:45:20,242 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 617 640) the Hoare annotation is: (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0)) (= 0 ~systemActive~0) (not (<= |old(~waterLevel~0)| 2))) [2022-11-23 15:45:20,242 INFO L895 garLoopResultBuilder]: At program point L720-1(lines 701 725) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (= ~pumpRunning~0 0)) (.cse7 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (< |old(~waterLevel~0)| 2)) (.cse0 (not .cse4)) (.cse3 (= 0 ~systemActive~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 .cse1 (not .cse2) .cse3) (or .cse4 .cse3 .cse5 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse6 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse6) .cse7) (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse6)))) (and .cse1 (<= ~waterLevel~0 1))) (or .cse0 .cse7 .cse3 .cse5) (or .cse2 .cse4 .cse3 (= ~waterLevel~0 1) .cse5) (or .cse0 (not (<= ~methaneLevelCritical~0 0)) (not (<= 0 ~methaneLevelCritical~0)) .cse3 .cse5 (= ~pumpRunning~0 1) (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-23 15:45:20,242 INFO L899 garLoopResultBuilder]: For program point L621-1(lines 620 639) no Hoare annotation was computed. [2022-11-23 15:45:20,243 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 617 640) no Hoare annotation was computed. [2022-11-23 15:45:20,243 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-23 15:45:20,243 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 506 514) the Hoare annotation is: true [2022-11-23 15:45:20,243 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 506 514) no Hoare annotation was computed. [2022-11-23 15:45:20,243 INFO L895 garLoopResultBuilder]: At program point L911-2(lines 903 916) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp~11#1| 1) (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= ~waterLevel~0 2)) [2022-11-23 15:45:20,244 INFO L899 garLoopResultBuilder]: For program point L874(lines 873 920) no Hoare annotation was computed. [2022-11-23 15:45:20,244 INFO L895 garLoopResultBuilder]: At program point L895(line 895) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp~11#1| 1) (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= ~waterLevel~0 2)) [2022-11-23 15:45:20,244 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-23 15:45:20,244 INFO L902 garLoopResultBuilder]: At program point L924(lines 863 928) the Hoare annotation is: true [2022-11-23 15:45:20,244 INFO L899 garLoopResultBuilder]: For program point L883(lines 883 889) no Hoare annotation was computed. [2022-11-23 15:45:20,245 INFO L899 garLoopResultBuilder]: For program point L883-1(lines 883 889) no Hoare annotation was computed. [2022-11-23 15:45:20,245 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:45:20,245 INFO L895 garLoopResultBuilder]: At program point L921(lines 872 922) the Hoare annotation is: false [2022-11-23 15:45:20,245 INFO L895 garLoopResultBuilder]: At program point L1012(lines 1012 1019) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= |ULTIMATE.start_main_~tmp~11#1| 1) (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0) (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0) (= ~waterLevel~0 1)) [2022-11-23 15:45:20,245 INFO L902 garLoopResultBuilder]: At program point L1012-2(lines 1012 1019) the Hoare annotation is: true [2022-11-23 15:45:20,246 INFO L899 garLoopResultBuilder]: For program point L893(lines 893 899) no Hoare annotation was computed. [2022-11-23 15:45:20,246 INFO L895 garLoopResultBuilder]: At program point L893-1(lines 893 899) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp~11#1| 1) (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= ~waterLevel~0 2)) [2022-11-23 15:45:20,246 INFO L895 garLoopResultBuilder]: At program point L918(lines 873 920) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~11#1| 1)) (.cse1 (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (<= ~waterLevel~0 1) .cse1 .cse2) (and .cse0 .cse1 .cse2 (<= ~waterLevel~0 2) (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1))))) [2022-11-23 15:45:20,246 INFO L895 garLoopResultBuilder]: At program point L885(line 885) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~11#1| 1)) (.cse1 (= |ULTIMATE.start_main_~tmp~11#1| ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (<= ~waterLevel~0 2))) (or (and .cse0 (<= ~waterLevel~0 1) .cse1 .cse2) (and .cse0 .cse1 .cse2 .cse3 (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1))) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3))) [2022-11-23 15:45:20,247 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 649 673) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-23 15:45:20,247 INFO L895 garLoopResultBuilder]: At program point L663(line 663) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse0) (or (not (<= ~waterLevel~0 1)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 0)) .cse0))) [2022-11-23 15:45:20,247 INFO L899 garLoopResultBuilder]: For program point L657(lines 657 665) no Hoare annotation was computed. [2022-11-23 15:45:20,247 INFO L895 garLoopResultBuilder]: At program point L653(lines 653 670) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-23 15:45:20,248 INFO L895 garLoopResultBuilder]: At program point L668(line 668) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-23 15:45:20,248 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 649 673) no Hoare annotation was computed. [2022-11-23 15:45:20,248 INFO L899 garLoopResultBuilder]: For program point L668-1(lines 649 673) no Hoare annotation was computed. [2022-11-23 15:45:20,248 INFO L895 garLoopResultBuilder]: At program point L739(line 739) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) .cse0 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 1))) (or (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-23 15:45:20,249 INFO L895 garLoopResultBuilder]: At program point L739-1(line 739) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (and (= ~methaneLevelCritical~0 |processEnvironment__wrappee__highWaterSensor_activatePump_#t~ret39#1|) (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 1)) (not (= |old(~pumpRunning~0)| 0)) (not (<= ~waterLevel~0 2)) .cse0) (or (not (<= ~waterLevel~0 1)) .cse0))) [2022-11-23 15:45:20,249 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 482 493) no Hoare annotation was computed. [2022-11-23 15:45:20,249 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 482 493) the Hoare annotation is: (let ((.cse2 (not (<= |old(~waterLevel~0)| 2))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0))) (and (or (and (not (<= (+ ~methaneLevelCritical~0 1) 0)) (not (<= 1 ~methaneLevelCritical~0)) (not (= ~pumpRunning~0 1))) .cse0 .cse1 .cse2) (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 .cse1))) [2022-11-23 15:45:20,249 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 759 769) the Hoare annotation is: true [2022-11-23 15:45:20,249 INFO L902 garLoopResultBuilder]: At program point L764(line 764) the Hoare annotation is: true [2022-11-23 15:45:20,250 INFO L899 garLoopResultBuilder]: For program point L764-1(line 764) no Hoare annotation was computed. [2022-11-23 15:45:20,250 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 759 769) no Hoare annotation was computed. [2022-11-23 15:45:20,254 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:20,257 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:45:20,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:45:20 BoogieIcfgContainer [2022-11-23 15:45:20,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:45:20,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:45:20,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:45:20,324 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:45:20,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:51" (3/4) ... [2022-11-23 15:45:20,328 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:45:20,340 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-23 15:45:20,340 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-23 15:45:20,341 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-23 15:45:20,341 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-23 15:45:20,341 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-23 15:45:20,341 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-23 15:45:20,342 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:45:20,342 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-23 15:45:20,342 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-23 15:45:20,342 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-23 15:45:20,352 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 54 nodes and edges [2022-11-23 15:45:20,355 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-23 15:45:20,356 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 15:45:20,357 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:45:20,358 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:45:20,387 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) || 0 == systemActive) || !(\old(waterLevel) <= 2) [2022-11-23 15:45:20,389 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || (pumpRunning == 0 && waterLevel <= 1))) && (((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && ((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || pumpRunning == 1) || !(2 <= \old(waterLevel))) [2022-11-23 15:45:20,389 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || 0 == systemActive) && ((pumpRunning == \old(pumpRunning) || !(waterLevel <= 1)) || 0 == systemActive) [2022-11-23 15:45:20,390 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || 0 == systemActive) && ((pumpRunning == \old(pumpRunning) || !(waterLevel <= 1)) || 0 == systemActive) [2022-11-23 15:45:20,390 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && !(0 == systemActive)) || !(pumpRunning == 0)) || methaneLevelCritical == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(tmp == 0)) && ((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && \old(waterLevel) == waterLevel) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && !(0 == systemActive)) || \old(pumpRunning) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && (((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && \old(waterLevel) == waterLevel) || !(\old(pumpRunning) == 0)) || (\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) [2022-11-23 15:45:20,390 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 2)) || \old(waterLevel) == waterLevel) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || (pumpRunning == 0 && waterLevel <= 1))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && ((((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) || (\old(waterLevel) == waterLevel && (!(pumpRunning == 0) || !(tmp == 0)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) [2022-11-23 15:45:20,391 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((methaneLevelCritical == aux-isMethaneAlarm()-aux && pumpRunning == 0) && tmp == 1) || !(\old(pumpRunning) == 0)) || !(waterLevel <= 2)) || 0 == systemActive) && (!(waterLevel <= 1) || 0 == systemActive) [2022-11-23 15:45:20,392 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!(pumpRunning == 0) && \old(waterLevel) == waterLevel) && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)) || !(\old(pumpRunning) == 0)) || (waterLevel <= 1 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 2)) || (pumpRunning == 0 && tmp___0 <= 1)) || 0 == systemActive)) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && ((((((pumpRunning == \old(pumpRunning) && tmp___0 <= 1) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) || ((pumpRunning == 0 && waterLevel <= 1) && tmp___0 <= 1)) || \old(pumpRunning) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) [2022-11-23 15:45:20,393 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 0 == systemActive || !(\old(waterLevel) <= 2) [2022-11-23 15:45:20,424 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:45:20,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:45:20,425 INFO L158 Benchmark]: Toolchain (without parser) took 90828.46ms. Allocated memory was 172.0MB in the beginning and 633.3MB in the end (delta: 461.4MB). Free memory was 133.6MB in the beginning and 491.4MB in the end (delta: -357.8MB). Peak memory consumption was 103.6MB. Max. memory is 16.1GB. [2022-11-23 15:45:20,426 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:20,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 703.24ms. Allocated memory is still 172.0MB. Free memory was 133.6MB in the beginning and 130.3MB in the end (delta: 3.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 15:45:20,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.11ms. Allocated memory is still 172.0MB. Free memory was 130.3MB in the beginning and 127.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:45:20,427 INFO L158 Benchmark]: Boogie Preprocessor took 40.65ms. Allocated memory is still 172.0MB. Free memory was 127.3MB in the beginning and 126.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:45:20,427 INFO L158 Benchmark]: RCFGBuilder took 1064.28ms. Allocated memory is still 172.0MB. Free memory was 126.1MB in the beginning and 97.5MB in the end (delta: 28.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-23 15:45:20,428 INFO L158 Benchmark]: TraceAbstraction took 88814.74ms. Allocated memory was 172.0MB in the beginning and 633.3MB in the end (delta: 461.4MB). Free memory was 96.7MB in the beginning and 497.7MB in the end (delta: -400.9MB). Peak memory consumption was 357.0MB. Max. memory is 16.1GB. [2022-11-23 15:45:20,428 INFO L158 Benchmark]: Witness Printer took 101.54ms. Allocated memory is still 633.3MB. Free memory was 497.7MB in the beginning and 491.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 15:45:20,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 703.24ms. Allocated memory is still 172.0MB. Free memory was 133.6MB in the beginning and 130.3MB in the end (delta: 3.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.11ms. Allocated memory is still 172.0MB. Free memory was 130.3MB in the beginning and 127.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.65ms. Allocated memory is still 172.0MB. Free memory was 127.3MB in the beginning and 126.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1064.28ms. Allocated memory is still 172.0MB. Free memory was 126.1MB in the beginning and 97.5MB in the end (delta: 28.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 88814.74ms. Allocated memory was 172.0MB in the beginning and 633.3MB in the end (delta: 461.4MB). Free memory was 96.7MB in the beginning and 497.7MB in the end (delta: -400.9MB). Peak memory consumption was 357.0MB. Max. memory is 16.1GB. * Witness Printer took 101.54ms. Allocated memory is still 633.3MB. Free memory was 497.7MB in the beginning and 491.4MB 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 11 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 88.7s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 22.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2564 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2499 mSDsluCounter, 4062 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3145 mSDsCounter, 1316 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4715 IncrementalHoareTripleChecker+Invalid, 6031 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1316 mSolverCounterUnsat, 917 mSDtfsCounter, 4715 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 645 GetRequests, 389 SyntacticMatches, 24 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5728 ImplicationChecksByTransitivity, 39.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3319occurred in iteration=9, InterpolantAutomatonStates: 167, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 879 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 4757 PreInvPairs, 5627 NumberOfFragments, 1453 HoareAnnotationTreeSize, 4757 FomulaSimplifications, 16511 FormulaSimplificationTreeSizeReduction, 4.7s HoareSimplificationTime, 44 FomulaSimplificationsInter, 147130 FormulaSimplificationTreeSizeReductionInter, 17.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 716 ConstructedInterpolants, 0 QuantifiedInterpolants, 2590 SizeOfPredicates, 29 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 134/171 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: 941]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 863]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 == systemActive || !(\old(waterLevel) <= 2) - InvariantResult [Line: 701]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || (pumpRunning == 0 && waterLevel <= 1))) && (((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && ((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || pumpRunning == 1) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 617]: Loop Invariant Derived loop invariant: ((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) || 0 == systemActive) || !(\old(waterLevel) <= 2) - InvariantResult [Line: 679]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || 0 == systemActive) && ((pumpRunning == \old(pumpRunning) || !(waterLevel <= 1)) || 0 == systemActive) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 2)) || \old(waterLevel) == waterLevel) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel))))) || (pumpRunning == 0 && waterLevel <= 1))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && ((((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) || (\old(waterLevel) == waterLevel && (!(pumpRunning == 0) || !(tmp == 0)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((((!(\old(pumpRunning) == 0) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 872]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 739]: Loop Invariant Derived loop invariant: (((((methaneLevelCritical == aux-isMethaneAlarm()-aux && pumpRunning == 0) && tmp == 1) || !(\old(pumpRunning) == 0)) || !(waterLevel <= 2)) || 0 == systemActive) && (!(waterLevel <= 1) || 0 == systemActive) - InvariantResult [Line: 931]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1012]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 893]: Loop Invariant Derived loop invariant: ((tmp == 1 && tmp == systemActive) && splverifierCounter == 0) && waterLevel <= 2 - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: (((((((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && !(0 == systemActive)) || !(pumpRunning == 0)) || methaneLevelCritical == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(tmp == 0)) && ((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && \old(waterLevel) == waterLevel) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && (((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && !(0 == systemActive)) || \old(pumpRunning) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (pumpRunning == \old(pumpRunning) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && ((((\old(waterLevel) < 2 || \old(pumpRunning) == 0) || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2))) && (((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && \old(waterLevel) == waterLevel) || !(\old(pumpRunning) == 0)) || (\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) - InvariantResult [Line: 1012]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && tmp == 1) && tmp == systemActive) && methaneLevelCritical <= 0) && 0 <= methaneLevelCritical) && waterLevel == 1 - InvariantResult [Line: 77]: Loop Invariant Derived loop invariant: (((((((((!(pumpRunning == 0) && \old(waterLevel) == waterLevel) && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)) || !(\old(pumpRunning) == 0)) || (waterLevel <= 1 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) < 2)) || (pumpRunning == 0 && tmp___0 <= 1)) || 0 == systemActive)) && ((((\old(pumpRunning) == 0 || 0 == systemActive) || waterLevel == 1) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) || !(\old(waterLevel) < 2)) || 0 == systemActive)) && ((((((pumpRunning == \old(pumpRunning) && tmp___0 <= 1) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))) || ((pumpRunning == 0 && waterLevel <= 1) && tmp___0 <= 1)) || \old(pumpRunning) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) - InvariantResult [Line: 873]: Loop Invariant Derived loop invariant: (((tmp == 1 && waterLevel <= 1) && tmp == systemActive) && splverifierCounter == 0) || ((((tmp == 1 && tmp == systemActive) && splverifierCounter == 0) && waterLevel <= 2) && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)) - InvariantResult [Line: 653]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || 0 == systemActive) && ((pumpRunning == \old(pumpRunning) || !(waterLevel <= 1)) || 0 == systemActive) RESULT: Ultimate proved your program to be correct! [2022-11-23 15:45:20,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad52e906-adf1-4824-b4a3-8c83cd429a43/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