./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product58.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_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/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_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/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_b99147a0-4539-4c66-aa78-efc6de87c412/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 a5df7e7a530538a677becf014bfb990c6b0570c5e1058d85d7e78cec25f53253 --- 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 15:20:53,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:20:53,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:20:53,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:20:53,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:20:53,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:20:53,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:20:53,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:20:53,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:20:53,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:20:53,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:20:53,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:20:53,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:20:53,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:20:53,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:20:53,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:20:53,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:20:53,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:20:53,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:20:53,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:20:53,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:20:53,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:20:53,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:20:53,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:20:53,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:20:53,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:20:53,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:20:53,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:20:53,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:20:53,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:20:53,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:20:53,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:20:53,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:20:53,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:20:53,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:20:53,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:20:53,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:20:53,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:20:53,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:20:53,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:20:53,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:20:53,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:20:53,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:20:53,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:20:53,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:20:53,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:20:53,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:20:53,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:20:53,622 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:20:53,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:20:53,622 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:20:53,622 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:20:53,623 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:20:53,623 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:20:53,623 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:20:53,623 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:20:53,624 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:20:53,624 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:20:53,624 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:20:53,625 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:20:53,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:20:53,626 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:20:53,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:20:53,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:20:53,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:20:53,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:20:53,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:20:53,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:20:53,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:20:53,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:20:53,628 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:20:53,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:20:53,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:20:53,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:20:53,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:20:53,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:20:53,630 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:20:53,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:20:53,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:20:53,635 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:20:53,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:20:53,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:20:53,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:20:53,650 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_b99147a0-4539-4c66-aa78-efc6de87c412/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5df7e7a530538a677becf014bfb990c6b0570c5e1058d85d7e78cec25f53253 [2022-11-23 15:20:53,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:20:53,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:20:53,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:20:53,980 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:20:53,981 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:20:53,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c [2022-11-23 15:20:57,570 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:20:57,884 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:20:57,885 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c [2022-11-23 15:20:57,909 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/data/5464f4772/aefb6d342b2e4ffebf652a5df088767d/FLAG2cfeafadf [2022-11-23 15:20:57,925 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/data/5464f4772/aefb6d342b2e4ffebf652a5df088767d [2022-11-23 15:20:57,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:20:57,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:20:57,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:20:57,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:20:57,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:20:57,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:57" (1/1) ... [2022-11-23 15:20:57,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466eb1eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:57, skipping insertion in model container [2022-11-23 15:20:57,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:57" (1/1) ... [2022-11-23 15:20:57,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:20:57,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:20:58,323 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_b99147a0-4539-4c66-aa78-efc6de87c412/sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c[19170,19183] [2022-11-23 15:20:58,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:20:58,350 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:20:58,467 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_b99147a0-4539-4c66-aa78-efc6de87c412/sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c[19170,19183] [2022-11-23 15:20:58,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:20:58,488 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:20:58,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58 WrapperNode [2022-11-23 15:20:58,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:20:58,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:20:58,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:20:58,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:20:58,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (1/1) ... [2022-11-23 15:20:58,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (1/1) ... [2022-11-23 15:20:58,570 INFO L138 Inliner]: procedures = 58, calls = 102, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 223 [2022-11-23 15:20:58,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:20:58,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:20:58,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:20:58,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:20:58,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (1/1) ... [2022-11-23 15:20:58,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (1/1) ... [2022-11-23 15:20:58,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (1/1) ... [2022-11-23 15:20:58,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (1/1) ... [2022-11-23 15:20:58,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (1/1) ... [2022-11-23 15:20:58,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (1/1) ... [2022-11-23 15:20:58,640 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (1/1) ... [2022-11-23 15:20:58,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (1/1) ... [2022-11-23 15:20:58,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:20:58,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:20:58,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:20:58,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:20:58,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (1/1) ... [2022-11-23 15:20:58,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:20:58,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:20:58,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:20:58,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:20:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:20:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-23 15:20:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-23 15:20:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 15:20:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 15:20:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 15:20:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 15:20:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-23 15:20:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-23 15:20:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:20:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:20:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-23 15:20:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-23 15:20:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:20:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-23 15:20:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-23 15:20:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:20:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:20:58,889 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:20:58,892 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:20:59,396 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:20:59,559 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:20:59,563 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:20:59,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:59 BoogieIcfgContainer [2022-11-23 15:20:59,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:20:59,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:20:59,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:20:59,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:20:59,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:20:57" (1/3) ... [2022-11-23 15:20:59,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ade719c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:59, skipping insertion in model container [2022-11-23 15:20:59,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:58" (2/3) ... [2022-11-23 15:20:59,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ade719c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:59, skipping insertion in model container [2022-11-23 15:20:59,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:59" (3/3) ... [2022-11-23 15:20:59,599 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product58.cil.c [2022-11-23 15:20:59,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:20:59,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:20:59,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:20:59,688 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;@5d3f3cee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:20:59,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:20:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 15:20:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:20:59,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:59,707 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 15:20:59,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:20:59,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:59,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1994170977, now seen corresponding path program 1 times [2022-11-23 15:20:59,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:59,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738129105] [2022-11-23 15:20:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:59,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:59,944 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 15:20:59,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:59,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738129105] [2022-11-23 15:20:59,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738129105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:59,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:59,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:20:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898581392] [2022-11-23 15:20:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:59,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:20:59,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:00,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:21:00,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:21:00,036 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.5) 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 15:21:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:00,182 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2022-11-23 15:21:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:21:00,185 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 15:21:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:00,199 INFO L225 Difference]: With dead ends: 114 [2022-11-23 15:21:00,199 INFO L226 Difference]: Without dead ends: 53 [2022-11-23 15:21:00,210 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 15:21:00,216 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:00,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:21:00,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-23 15:21:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-23 15:21:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 15:21:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2022-11-23 15:21:00,292 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 17 [2022-11-23 15:21:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:00,293 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2022-11-23 15:21:00,294 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 15:21:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2022-11-23 15:21:00,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 15:21:00,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:00,301 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 15:21:00,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:21:00,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:00,305 INFO L85 PathProgramCache]: Analyzing trace with hash 295418545, now seen corresponding path program 1 times [2022-11-23 15:21:00,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:00,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900453753] [2022-11-23 15:21:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:00,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:00,439 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 15:21:00,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:00,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900453753] [2022-11-23 15:21:00,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900453753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:00,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:00,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:21:00,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608797554] [2022-11-23 15:21:00,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:00,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:21:00,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:00,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:21:00,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:00,445 INFO L87 Difference]: Start difference. First operand 53 states and 68 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 15:21:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:00,501 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2022-11-23 15:21:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:00,502 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 15:21:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:00,504 INFO L225 Difference]: With dead ends: 83 [2022-11-23 15:21:00,504 INFO L226 Difference]: Without dead ends: 45 [2022-11-23 15:21:00,505 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 15:21:00,507 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:00,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:21:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-23 15:21:00,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-23 15:21:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 36 states have internal predecessors, (39), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-23 15:21:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-11-23 15:21:00,519 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 18 [2022-11-23 15:21:00,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:00,519 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-11-23 15:21:00,519 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 15:21:00,520 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-11-23 15:21:00,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 15:21:00,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:00,521 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 15:21:00,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:21:00,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:00,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:00,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1927685859, now seen corresponding path program 1 times [2022-11-23 15:21:00,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:00,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114617151] [2022-11-23 15:21:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:00,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:00,877 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 15:21:00,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:00,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114617151] [2022-11-23 15:21:00,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114617151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:00,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:00,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:21:00,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742562023] [2022-11-23 15:21:00,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:00,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:21:00,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:00,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:21:00,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:21:00,886 INFO L87 Difference]: Start difference. First operand 45 states and 57 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 15:21:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:00,985 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2022-11-23 15:21:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:21:00,986 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 15:21:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:00,987 INFO L225 Difference]: With dead ends: 88 [2022-11-23 15:21:00,987 INFO L226 Difference]: Without dead ends: 45 [2022-11-23 15:21:00,988 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 15:21:00,989 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 47 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:00,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 55 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:21:00,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-23 15:21:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-23 15:21:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 36 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-23 15:21:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2022-11-23 15:21:01,000 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 20 [2022-11-23 15:21:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:01,001 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2022-11-23 15:21:01,001 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 15:21:01,001 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2022-11-23 15:21:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 15:21:01,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:01,003 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] [2022-11-23 15:21:01,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:21:01,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:01,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:01,004 INFO L85 PathProgramCache]: Analyzing trace with hash 892214911, now seen corresponding path program 1 times [2022-11-23 15:21:01,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:01,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370553517] [2022-11-23 15:21:01,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:01,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:01,102 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 15:21:01,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:01,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370553517] [2022-11-23 15:21:01,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370553517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:01,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:01,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:21:01,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404103475] [2022-11-23 15:21:01,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:01,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:21:01,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:01,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:21:01,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:01,121 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 15:21:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:01,235 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2022-11-23 15:21:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:01,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 23 [2022-11-23 15:21:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:01,237 INFO L225 Difference]: With dead ends: 123 [2022-11-23 15:21:01,238 INFO L226 Difference]: Without dead ends: 80 [2022-11-23 15:21:01,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:01,240 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 38 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:01,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 88 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:21:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-23 15:21:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2022-11-23 15:21:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 59 states have internal predecessors, (66), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2022-11-23 15:21:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2022-11-23 15:21:01,283 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 23 [2022-11-23 15:21:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:01,283 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2022-11-23 15:21:01,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 15:21:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2022-11-23 15:21:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 15:21:01,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:01,287 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 15:21:01,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:21:01,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:01,290 INFO L85 PathProgramCache]: Analyzing trace with hash -758315688, now seen corresponding path program 1 times [2022-11-23 15:21:01,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:01,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759602345] [2022-11-23 15:21:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:01,546 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 15:21:01,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:01,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759602345] [2022-11-23 15:21:01,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759602345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:01,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:01,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:21:01,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573313071] [2022-11-23 15:21:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:01,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:21:01,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:21:01,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:21:01,556 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 15:21:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:01,821 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2022-11-23 15:21:01,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:21:01,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-23 15:21:01,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:01,837 INFO L225 Difference]: With dead ends: 226 [2022-11-23 15:21:01,840 INFO L226 Difference]: Without dead ends: 150 [2022-11-23 15:21:01,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:21:01,846 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 33 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:01,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 214 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:21:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-23 15:21:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 142. [2022-11-23 15:21:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 95 states have (on average 1.231578947368421) internal successors, (117), 106 states have internal predecessors, (117), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2022-11-23 15:21:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 173 transitions. [2022-11-23 15:21:01,915 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 173 transitions. Word has length 31 [2022-11-23 15:21:01,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:01,916 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 173 transitions. [2022-11-23 15:21:01,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 15:21:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 173 transitions. [2022-11-23 15:21:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 15:21:01,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:01,925 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] [2022-11-23 15:21:01,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:21:01,926 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash -197557558, now seen corresponding path program 1 times [2022-11-23 15:21:01,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:01,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25261565] [2022-11-23 15:21:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:01,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:02,012 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 15:21:02,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:02,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25261565] [2022-11-23 15:21:02,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25261565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:02,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:02,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:21:02,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158863973] [2022-11-23 15:21:02,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:02,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:21:02,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:21:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:02,016 INFO L87 Difference]: Start difference. First operand 142 states and 173 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 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 15:21:02,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:02,110 INFO L93 Difference]: Finished difference Result 218 states and 275 transitions. [2022-11-23 15:21:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:02,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 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 34 [2022-11-23 15:21:02,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:02,113 INFO L225 Difference]: With dead ends: 218 [2022-11-23 15:21:02,114 INFO L226 Difference]: Without dead ends: 216 [2022-11-23 15:21:02,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:02,116 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 32 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:02,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 89 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:21:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-23 15:21:02,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-23 15:21:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 144 states have (on average 1.2361111111111112) internal successors, (178), 161 states have internal predecessors, (178), 37 states have call successors, (37), 34 states have call predecessors, (37), 34 states have return successors, (57), 37 states have call predecessors, (57), 37 states have call successors, (57) [2022-11-23 15:21:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 272 transitions. [2022-11-23 15:21:02,181 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 272 transitions. Word has length 34 [2022-11-23 15:21:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:02,182 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 272 transitions. [2022-11-23 15:21:02,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 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 15:21:02,183 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 272 transitions. [2022-11-23 15:21:02,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-23 15:21:02,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:02,191 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-23 15:21:02,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:21:02,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:02,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:02,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1121406910, now seen corresponding path program 1 times [2022-11-23 15:21:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:02,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929421909] [2022-11-23 15:21:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:02,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:21:02,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:02,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929421909] [2022-11-23 15:21:02,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929421909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:21:02,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224735971] [2022-11-23 15:21:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:02,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:02,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:02,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:21:02,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:21:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:02,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 15:21:02,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:21:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:21:03,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:21:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 15:21:04,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224735971] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:21:04,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1587698621] [2022-11-23 15:21:04,212 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-23 15:21:04,212 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:21:04,217 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:21:04,224 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:21:04,225 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:21:07,769 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 32 for LOIs [2022-11-23 15:21:08,095 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2022-11-23 15:21:08,277 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 42 for LOIs [2022-11-23 15:21:08,285 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 47 for LOIs [2022-11-23 15:21:08,297 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:21:14,489 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2704#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1|) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~8#1|) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~8#1|) (<= 0 ~methAndRunningLastTime~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1| 0)) (<= 0 |old(~methAndRunningLastTime~0)|) (<= |old(~methAndRunningLastTime~0)| 1) (<= 0 ~head~0.base) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| ~methaneLevelCritical~0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| 2147483647) (<= 0 ~methaneLevelCritical~0) (<= 0 ~pumpRunning~0) (<= ~head~0.base 0) (= |#NULL.offset| 0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| 0)) (not (= ~methAndRunningLastTime~0 0)) (<= ~methAndRunningLastTime~0 1) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:21:14,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:21:14,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:21:14,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 24 [2022-11-23 15:21:14,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270187782] [2022-11-23 15:21:14,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:21:14,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 15:21:14,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:14,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 15:21:14,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2285, Unknown=0, NotChecked=0, Total=2550 [2022-11-23 15:21:14,494 INFO L87 Difference]: Start difference. First operand 216 states and 272 transitions. Second operand has 24 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 9 states have call successors, (15), 6 states have call predecessors, (15), 13 states have return successors, (16), 12 states have call predecessors, (16), 9 states have call successors, (16) [2022-11-23 15:21:19,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:19,156 INFO L93 Difference]: Finished difference Result 1190 states and 1713 transitions. [2022-11-23 15:21:19,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-23 15:21:19,158 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 9 states have call successors, (15), 6 states have call predecessors, (15), 13 states have return successors, (16), 12 states have call predecessors, (16), 9 states have call successors, (16) Word has length 57 [2022-11-23 15:21:19,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:19,166 INFO L225 Difference]: With dead ends: 1190 [2022-11-23 15:21:19,167 INFO L226 Difference]: Without dead ends: 933 [2022-11-23 15:21:19,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3828 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1214, Invalid=9706, Unknown=0, NotChecked=0, Total=10920 [2022-11-23 15:21:19,173 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 857 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:19,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 353 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 15:21:19,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-11-23 15:21:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 633. [2022-11-23 15:21:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 425 states have (on average 1.1976470588235295) internal successors, (509), 463 states have internal predecessors, (509), 103 states have call successors, (103), 83 states have call predecessors, (103), 104 states have return successors, (160), 109 states have call predecessors, (160), 103 states have call successors, (160) [2022-11-23 15:21:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 772 transitions. [2022-11-23 15:21:19,327 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 772 transitions. Word has length 57 [2022-11-23 15:21:19,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:19,329 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 772 transitions. [2022-11-23 15:21:19,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 9 states have call successors, (15), 6 states have call predecessors, (15), 13 states have return successors, (16), 12 states have call predecessors, (16), 9 states have call successors, (16) [2022-11-23 15:21:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 772 transitions. [2022-11-23 15:21:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 15:21:19,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:19,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:19,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:21:19,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 15:21:19,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:19,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:19,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2010976781, now seen corresponding path program 1 times [2022-11-23 15:21:19,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:19,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454656472] [2022-11-23 15:21:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:19,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:21:19,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:19,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454656472] [2022-11-23 15:21:19,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454656472] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:21:19,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378449898] [2022-11-23 15:21:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:19,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:19,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:19,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:21:19,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:21:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:19,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:21:19,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:21:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 15:21:19,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:21:19,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378449898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:19,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:21:19,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-11-23 15:21:19,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390895162] [2022-11-23 15:21:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:19,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:21:19,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:21:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:21:19,862 INFO L87 Difference]: Start difference. First operand 633 states and 772 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:21:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:19,985 INFO L93 Difference]: Finished difference Result 1172 states and 1463 transitions. [2022-11-23 15:21:19,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:21:19,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-11-23 15:21:19,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:19,991 INFO L225 Difference]: With dead ends: 1172 [2022-11-23 15:21:19,991 INFO L226 Difference]: Without dead ends: 656 [2022-11-23 15:21:19,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:21:19,995 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 32 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:19,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 137 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:21:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-11-23 15:21:20,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 591. [2022-11-23 15:21:20,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 396 states have (on average 1.1691919191919191) internal successors, (463), 427 states have internal predecessors, (463), 98 states have call successors, (98), 78 states have call predecessors, (98), 96 states have return successors, (143), 103 states have call predecessors, (143), 98 states have call successors, (143) [2022-11-23 15:21:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 704 transitions. [2022-11-23 15:21:20,113 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 704 transitions. Word has length 64 [2022-11-23 15:21:20,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:20,114 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 704 transitions. [2022-11-23 15:21:20,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:21:20,114 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 704 transitions. [2022-11-23 15:21:20,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 15:21:20,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:20,118 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-23 15:21:20,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:21:20,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:20,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:20,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:20,325 INFO L85 PathProgramCache]: Analyzing trace with hash -507746239, now seen corresponding path program 1 times [2022-11-23 15:21:20,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:20,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039037671] [2022-11-23 15:21:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:20,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:21:20,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:20,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039037671] [2022-11-23 15:21:20,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039037671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:21:20,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963060793] [2022-11-23 15:21:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:20,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:20,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:20,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:21:20,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:21:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:20,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-23 15:21:20,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:21:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:21:20,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:21:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 15:21:21,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963060793] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:21:21,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [455722078] [2022-11-23 15:21:21,519 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-23 15:21:21,520 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:21:21,520 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:21:21,520 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:21:21,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:21:23,959 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 34 for LOIs [2022-11-23 15:21:24,292 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 29 for LOIs [2022-11-23 15:21:24,449 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 45 for LOIs [2022-11-23 15:21:24,455 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 49 for LOIs [2022-11-23 15:21:24,464 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:21:31,204 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8976#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1|) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~8#1|) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~8#1|) (<= 2 |old(~waterLevel~0)|) (<= 0 |old(~methAndRunningLastTime~0)|) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| ~methaneLevelCritical~0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| 2147483647) (<= 0 ~methaneLevelCritical~0) (= |old(~waterLevel~0)| ~waterLevel~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |old(~methAndRunningLastTime~0)| ~methAndRunningLastTime~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| 0)) (not (= ~methAndRunningLastTime~0 0)) (<= ~methAndRunningLastTime~0 1) (<= 0 |#StackHeapBarrier|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:21:31,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:21:31,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:21:31,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 11] total 24 [2022-11-23 15:21:31,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25987158] [2022-11-23 15:21:31,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:21:31,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 15:21:31,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:31,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 15:21:31,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2276, Unknown=0, NotChecked=0, Total=2550 [2022-11-23 15:21:31,208 INFO L87 Difference]: Start difference. First operand 591 states and 704 transitions. Second operand has 24 states, 20 states have (on average 4.7) internal successors, (94), 18 states have internal predecessors, (94), 10 states have call successors, (20), 6 states have call predecessors, (20), 11 states have return successors, (20), 12 states have call predecessors, (20), 10 states have call successors, (20) [2022-11-23 15:21:38,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:38,763 INFO L93 Difference]: Finished difference Result 1853 states and 2297 transitions. [2022-11-23 15:21:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-23 15:21:38,764 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.7) internal successors, (94), 18 states have internal predecessors, (94), 10 states have call successors, (20), 6 states have call predecessors, (20), 11 states have return successors, (20), 12 states have call predecessors, (20), 10 states have call successors, (20) Word has length 66 [2022-11-23 15:21:38,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:38,773 INFO L225 Difference]: With dead ends: 1853 [2022-11-23 15:21:38,776 INFO L226 Difference]: Without dead ends: 1284 [2022-11-23 15:21:38,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 191 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11537 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=2745, Invalid=27357, Unknown=0, NotChecked=0, Total=30102 [2022-11-23 15:21:38,790 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 1005 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 3060 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 3892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 3060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:38,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 811 Invalid, 3892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 3060 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 15:21:38,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-11-23 15:21:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 942. [2022-11-23 15:21:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 625 states have (on average 1.1488) internal successors, (718), 676 states have internal predecessors, (718), 156 states have call successors, (156), 135 states have call predecessors, (156), 160 states have return successors, (234), 159 states have call predecessors, (234), 156 states have call successors, (234) [2022-11-23 15:21:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1108 transitions. [2022-11-23 15:21:38,938 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1108 transitions. Word has length 66 [2022-11-23 15:21:38,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:38,938 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1108 transitions. [2022-11-23 15:21:38,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.7) internal successors, (94), 18 states have internal predecessors, (94), 10 states have call successors, (20), 6 states have call predecessors, (20), 11 states have return successors, (20), 12 states have call predecessors, (20), 10 states have call successors, (20) [2022-11-23 15:21:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1108 transitions. [2022-11-23 15:21:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 15:21:38,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:38,944 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:21:38,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 15:21:39,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:39,151 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:39,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:39,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1345019468, now seen corresponding path program 1 times [2022-11-23 15:21:39,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:39,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206544968] [2022-11-23 15:21:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:39,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 15:21:40,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:40,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206544968] [2022-11-23 15:21:40,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206544968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:21:40,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486348621] [2022-11-23 15:21:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:40,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:40,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:40,143 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:21:40,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:21:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:40,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-23 15:21:40,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:21:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 59 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:21:40,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:21:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 44 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 15:21:41,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486348621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:21:41,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [414823335] [2022-11-23 15:21:41,591 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-23 15:21:41,591 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:21:41,591 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:21:41,592 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:21:41,592 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:21:44,989 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 42 for LOIs [2022-11-23 15:21:44,997 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2022-11-23 15:21:45,274 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 59 for LOIs [2022-11-23 15:21:45,771 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 49 for LOIs [2022-11-23 15:21:45,784 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 24 for LOIs [2022-11-23 15:21:45,788 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 35 for LOIs [2022-11-23 15:21:45,791 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:21:51,173 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14229#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1|) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~8#1|) (= ~head~0.offset 0) (<= 1 ~systemActive~0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (<= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~8#1|) (<= 0 ~methAndRunningLastTime~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1| 0)) (<= 0 |old(~methAndRunningLastTime~0)|) (<= 0 ~head~0.base) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| ~methaneLevelCritical~0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| 2147483647) (<= 0 ~methaneLevelCritical~0) (<= ~head~0.base 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| 0)) (<= 0 |#NULL.offset|) (not (= ~methAndRunningLastTime~0 0)) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:21:51,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:21:51,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:21:51,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 30 [2022-11-23 15:21:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366356942] [2022-11-23 15:21:51,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:21:51,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 15:21:51,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:51,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 15:21:51,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=3238, Unknown=0, NotChecked=0, Total=3660 [2022-11-23 15:21:51,177 INFO L87 Difference]: Start difference. First operand 942 states and 1108 transitions. Second operand has 30 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 14 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (28), 11 states have call predecessors, (28), 14 states have call successors, (28) [2022-11-23 15:21:54,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:54,686 INFO L93 Difference]: Finished difference Result 3528 states and 4424 transitions. [2022-11-23 15:21:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-23 15:21:54,687 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 14 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (28), 11 states have call predecessors, (28), 14 states have call successors, (28) Word has length 96 [2022-11-23 15:21:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:54,708 INFO L225 Difference]: With dead ends: 3528 [2022-11-23 15:21:54,708 INFO L226 Difference]: Without dead ends: 2745 [2022-11-23 15:21:54,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 243 SyntacticMatches, 6 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3226 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1047, Invalid=7509, Unknown=0, NotChecked=0, Total=8556 [2022-11-23 15:21:54,718 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 1030 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:54,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 710 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 15:21:54,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2022-11-23 15:21:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2392. [2022-11-23 15:21:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 1612 states have (on average 1.1352357320099256) internal successors, (1830), 1721 states have internal predecessors, (1830), 395 states have call successors, (395), 303 states have call predecessors, (395), 384 states have return successors, (627), 409 states have call predecessors, (627), 395 states have call successors, (627) [2022-11-23 15:21:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 2852 transitions. [2022-11-23 15:21:55,091 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 2852 transitions. Word has length 96 [2022-11-23 15:21:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:55,092 INFO L495 AbstractCegarLoop]: Abstraction has 2392 states and 2852 transitions. [2022-11-23 15:21:55,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 14 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (28), 11 states have call predecessors, (28), 14 states have call successors, (28) [2022-11-23 15:21:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 2852 transitions. [2022-11-23 15:21:55,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-23 15:21:55,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:55,110 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-23 15:21:55,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:21:55,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:21:55,320 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:55,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:55,320 INFO L85 PathProgramCache]: Analyzing trace with hash -550431023, now seen corresponding path program 1 times [2022-11-23 15:21:55,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:55,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75482385] [2022-11-23 15:21:55,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:55,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 85 proven. 84 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-23 15:21:56,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:56,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75482385] [2022-11-23 15:21:56,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75482385] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:21:56,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479669105] [2022-11-23 15:21:56,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:56,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:56,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:56,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:21:56,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:21:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:56,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-23 15:21:56,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:21:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 151 proven. 42 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-23 15:21:57,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:21:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 105 proven. 58 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-23 15:21:58,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479669105] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:21:58,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1582498605] [2022-11-23 15:21:58,796 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-23 15:21:58,797 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:21:58,797 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:21:58,798 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:21:58,798 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:22:04,178 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 136 for LOIs [2022-11-23 15:22:04,199 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 54 for LOIs [2022-11-23 15:22:04,661 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 41 for LOIs [2022-11-23 15:22:04,855 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 51 for LOIs [2022-11-23 15:22:04,867 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 45 for LOIs [2022-11-23 15:22:04,875 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 27 for LOIs [2022-11-23 15:22:04,877 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:22:13,962 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24429#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1|) (<= ~methaneLevelCritical~0 1) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~8#1|) (= ~head~0.offset 0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~8#1|) (<= 0 ~methAndRunningLastTime~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1| 0)) (<= 0 |old(~methAndRunningLastTime~0)|) (<= |old(~methAndRunningLastTime~0)| 1) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| ~methaneLevelCritical~0) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| 0)) (not (= ~methAndRunningLastTime~0 0)) (<= ~methAndRunningLastTime~0 1) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:22:13,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:22:13,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:22:13,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 36 [2022-11-23 15:22:13,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718827578] [2022-11-23 15:22:13,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:22:13,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-23 15:22:13,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:13,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-23 15:22:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=3950, Unknown=0, NotChecked=0, Total=4422 [2022-11-23 15:22:13,967 INFO L87 Difference]: Start difference. First operand 2392 states and 2852 transitions. Second operand has 36 states, 34 states have (on average 5.117647058823529) internal successors, (174), 35 states have internal predecessors, (174), 22 states have call successors, (40), 8 states have call predecessors, (40), 14 states have return successors, (42), 18 states have call predecessors, (42), 22 states have call successors, (42) [2022-11-23 15:22:15,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:15,211 INFO L93 Difference]: Finished difference Result 2827 states and 3364 transitions. [2022-11-23 15:22:15,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 15:22:15,213 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 5.117647058823529) internal successors, (174), 35 states have internal predecessors, (174), 22 states have call successors, (40), 8 states have call predecessors, (40), 14 states have return successors, (42), 18 states have call predecessors, (42), 22 states have call successors, (42) Word has length 145 [2022-11-23 15:22:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:15,214 INFO L225 Difference]: With dead ends: 2827 [2022-11-23 15:22:15,214 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:22:15,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 365 SyntacticMatches, 31 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4294 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=789, Invalid=5691, Unknown=0, NotChecked=0, Total=6480 [2022-11-23 15:22:15,227 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 532 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:15,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 300 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:22:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:22:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:22:15,228 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 15:22:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:22:15,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 145 [2022-11-23 15:22:15,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:15,230 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:22:15,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 5.117647058823529) internal successors, (174), 35 states have internal predecessors, (174), 22 states have call successors, (40), 8 states have call predecessors, (40), 14 states have return successors, (42), 18 states have call predecessors, (42), 22 states have call successors, (42) [2022-11-23 15:22:15,230 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:22:15,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:22:15,234 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:22:15,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:22:15,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 15:22:15,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:22:23,073 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 629 635) no Hoare annotation was computed. [2022-11-23 15:22:23,073 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 629 635) the Hoare annotation is: true [2022-11-23 15:22:23,074 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 84 95) the Hoare annotation is: (let ((.cse1 (not (= ~pumpRunning~0 0))) (.cse0 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0)) (.cse2 (= 0 ~systemActive~0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (and (not (= |old(~methaneLevelCritical~0)| 0)) .cse1) (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse2 .cse3) (or .cse1 (not (<= 1 ~waterLevel~0)) .cse0 (not (<= ~waterLevel~0 1)) .cse2 .cse3))) [2022-11-23 15:22:23,074 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 84 95) no Hoare annotation was computed. [2022-11-23 15:22:23,074 INFO L902 garLoopResultBuilder]: At program point L929(lines 904 933) the Hoare annotation is: true [2022-11-23 15:22:23,074 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 904 933) no Hoare annotation was computed. [2022-11-23 15:22:23,074 INFO L899 garLoopResultBuilder]: For program point L925(line 925) no Hoare annotation was computed. [2022-11-23 15:22:23,074 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 904 933) the Hoare annotation is: true [2022-11-23 15:22:23,075 INFO L899 garLoopResultBuilder]: For program point L918(lines 918 922) no Hoare annotation was computed. [2022-11-23 15:22:23,075 INFO L902 garLoopResultBuilder]: At program point L918-1(lines 918 922) the Hoare annotation is: true [2022-11-23 15:22:23,075 INFO L902 garLoopResultBuilder]: At program point L914-2(lines 914 928) the Hoare annotation is: true [2022-11-23 15:22:23,075 INFO L902 garLoopResultBuilder]: At program point L910(line 910) the Hoare annotation is: true [2022-11-23 15:22:23,075 INFO L899 garLoopResultBuilder]: For program point L910-1(line 910) no Hoare annotation was computed. [2022-11-23 15:22:23,075 INFO L899 garLoopResultBuilder]: For program point L609-1(lines 608 627) no Hoare annotation was computed. [2022-11-23 15:22:23,076 INFO L895 garLoopResultBuilder]: At program point L671(lines 671 679) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not (<= |old(~waterLevel~0)| 2)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |timeShift_processEnvironment_~tmp~5#1| 1) (= ~methAndRunningLastTime~0 0) (not (= ~pumpRunning~0 0)) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (not (<= 2 |old(~waterLevel~0)|))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse1))) [2022-11-23 15:22:23,076 INFO L895 garLoopResultBuilder]: At program point L667(lines 667 684) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= ~pumpRunning~0 0)) (.cse4 (= 0 ~systemActive~0))) (and (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) .cse0 (and .cse1 .cse2 .cse3) (not (<= 1 |old(~waterLevel~0)|)) .cse4) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2 (or (and .cse1 .cse3) (and (not .cse1) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))))) .cse4 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:22:23,076 INFO L895 garLoopResultBuilder]: At program point L841(line 841) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= ~pumpRunning~0 0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse6 (= 0 ~systemActive~0))) (and (or .cse0 (and (= |timeShift_processEnvironment_~tmp~5#1| 1) .cse1 .cse2 .cse3 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (and .cse3 .cse4 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 1))) (let ((.cse5 (= ~methaneLevelCritical~0 0))) (or (and .cse2 (not .cse5)) (and .cse5 (= ~pumpRunning~0 1))))) .cse6 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (<= |old(~waterLevel~0)| 1)) .cse1 .cse0 (and .cse2 .cse3 .cse4) (not (<= 1 |old(~waterLevel~0)|)) .cse6) (or .cse2 .cse0 (not (= |old(~pumpRunning~0)| 1)) (not (= |old(~waterLevel~0)| 2)) .cse6))) [2022-11-23 15:22:23,077 INFO L899 garLoopResultBuilder]: For program point L841-1(line 841) no Hoare annotation was computed. [2022-11-23 15:22:23,077 INFO L895 garLoopResultBuilder]: At program point L677(line 677) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse1) (or .cse0 .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:22:23,077 INFO L899 garLoopResultBuilder]: For program point L847(lines 847 857) no Hoare annotation was computed. [2022-11-23 15:22:23,077 INFO L895 garLoopResultBuilder]: At program point L1004(line 1004) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse1) (or .cse0 .cse1 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:22:23,078 INFO L895 garLoopResultBuilder]: At program point L843(lines 843 860) the Hoare annotation is: (let ((.cse8 (= ~methaneLevelCritical~0 0))) (let ((.cse1 (= ~pumpRunning~0 0)) (.cse7 (not .cse8))) (let ((.cse2 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| ~methaneLevelCritical~0)) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (or (and .cse1 .cse7) (and .cse8 (= ~pumpRunning~0 1)))) (.cse6 (not (<= |old(~waterLevel~0)| 2))) (.cse11 (not (<= |old(~waterLevel~0)| 1))) (.cse9 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse10 (= ~methAndRunningLastTime~0 0)) (.cse12 (not (<= 1 |old(~waterLevel~0)|))) (.cse5 (= 0 ~systemActive~0))) (and (or .cse0 (and (= |timeShift_processEnvironment_~tmp~5#1| 1) .cse1 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse2) (and .cse2 .cse3 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 1))) .cse4) .cse5 .cse6 (not (<= 2 |old(~waterLevel~0)|))) (or (and .cse7 .cse3) .cse0 (and .cse8 (not (= |old(~pumpRunning~0)| 1))) (and .cse9 .cse1 .cse10) (not (= |old(~waterLevel~0)| 2)) (and .cse9 .cse7) .cse5) (or .cse11 .cse9 .cse0 .cse12 (and .cse1 .cse2 .cse3) .cse5) (or (and .cse10 .cse4) .cse9 .cse0 (< |old(~waterLevel~0)| 2) .cse5 .cse6) (or .cse11 .cse9 .cse0 .cse10 .cse12 .cse7 .cse5))))) [2022-11-23 15:22:23,078 INFO L895 garLoopResultBuilder]: At program point L682(line 682) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse2 .cse3) .cse4 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) .cse0 (and .cse1 .cse2 .cse3) (not (<= 1 |old(~waterLevel~0)|)) .cse4))) [2022-11-23 15:22:23,078 INFO L895 garLoopResultBuilder]: At program point L843-1(lines 835 863) the Hoare annotation is: (let ((.cse17 (not (<= |old(~waterLevel~0)| 1))) (.cse18 (not (<= 1 |old(~waterLevel~0)|))) (.cse4 (= ~methAndRunningLastTime~0 0)) (.cse7 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| ~methaneLevelCritical~0)) (.cse9 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse12 (= ~methaneLevelCritical~0 0)) (.cse6 (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1| 0)) (.cse16 (not (<= |old(~waterLevel~0)| 2))) (.cse3 (= ~pumpRunning~0 0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse15 (= 0 ~systemActive~0))) (and (let ((.cse1 (= |timeShift_processEnvironment_~tmp~5#1| 1)) (.cse5 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse13 (or .cse12 (not (= |isMethaneLevelCritical_#res| 0)))) (.cse8 (not .cse15)) (.cse14 (or (not (= |processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#t~ret39#1| 0)) .cse12)) (.cse11 (not .cse12)) (.cse10 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 1))))) (or .cse0 (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse4 .cse7 .cse9 .cse10 (or (and .cse3 .cse11) (and .cse12 (= ~pumpRunning~0 1))) .cse13 .cse14) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse13 .cse8 .cse14) (and .cse3 .cse4 .cse11 .cse6 .cse7 .cse9 .cse10) .cse15 .cse16 (not (<= 2 |old(~waterLevel~0)|)))) (or .cse17 .cse2 .cse0 .cse12 .cse18 .cse6 .cse15) (or .cse17 .cse2 .cse0 .cse18 (and .cse3 .cse4 .cse7 .cse9) .cse15) (or .cse2 .cse0 .cse12 (< |old(~waterLevel~0)| 2) .cse6 .cse15 .cse16) (or .cse3 .cse0 (not (= |old(~pumpRunning~0)| 1)) (not (= |old(~waterLevel~0)| 2)) .cse15))) [2022-11-23 15:22:23,079 INFO L895 garLoopResultBuilder]: At program point L682-1(lines 663 687) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= ~pumpRunning~0 0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse6 (= 0 ~systemActive~0))) (and (or .cse0 (and (= |timeShift_processEnvironment_~tmp~5#1| 1) .cse1 .cse2 .cse3 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (and .cse3 .cse4 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 1))) (let ((.cse5 (= ~methaneLevelCritical~0 0))) (or (and .cse2 (not .cse5)) (and .cse5 (= ~pumpRunning~0 1))))) .cse6 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or (not (<= |old(~waterLevel~0)| 1)) .cse1 .cse0 (and .cse2 .cse3 .cse4) (not (<= 1 |old(~waterLevel~0)|)) .cse6) (or .cse2 .cse0 (not (= |old(~pumpRunning~0)| 1)) (not (= |old(~waterLevel~0)| 2)) .cse6))) [2022-11-23 15:22:23,079 INFO L899 garLoopResultBuilder]: For program point L616-1(lines 616 622) no Hoare annotation was computed. [2022-11-23 15:22:23,079 INFO L899 garLoopResultBuilder]: For program point L848(lines 848 854) no Hoare annotation was computed. [2022-11-23 15:22:23,079 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 605 628) the Hoare annotation is: (let ((.cse1 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (= 0 ~systemActive~0))) (and (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) .cse0 (and (= ~pumpRunning~0 0) .cse1 .cse2) (not (<= 1 |old(~waterLevel~0)|)) .cse3) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse2) .cse0 .cse3 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:22:23,079 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 605 628) no Hoare annotation was computed. [2022-11-23 15:22:23,080 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1004) no Hoare annotation was computed. [2022-11-23 15:22:23,080 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 96 104) the Hoare annotation is: true [2022-11-23 15:22:23,080 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 96 104) no Hoare annotation was computed. [2022-11-23 15:22:23,080 INFO L899 garLoopResultBuilder]: For program point L560(lines 560 566) no Hoare annotation was computed. [2022-11-23 15:22:23,080 INFO L895 garLoopResultBuilder]: At program point L560-1(lines 560 566) the Hoare annotation is: (let ((.cse0 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~10#1| ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~10#1| 1))) (or (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2 (<= ~waterLevel~0 2) .cse3) (and (= ~pumpRunning~0 0) .cse0 (<= ~waterLevel~0 1) .cse1 .cse2 (<= 1 ~waterLevel~0) .cse3))) [2022-11-23 15:22:23,081 INFO L895 garLoopResultBuilder]: At program point L585(lines 540 587) the Hoare annotation is: (let ((.cse1 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~10#1| ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~tmp~10#1| 1)) (.cse0 (= ~pumpRunning~0 0))) (or (and .cse0 .cse1 (<= ~waterLevel~0 1) .cse2 .cse3 (<= 1 ~waterLevel~0) .cse4) (and .cse1 (= 2 ~waterLevel~0) .cse2 .cse3 .cse4 (let ((.cse5 (= ~methaneLevelCritical~0 0))) (or (and .cse0 (not .cse5)) (and .cse5 (= ~pumpRunning~0 1))))))) [2022-11-23 15:22:23,081 INFO L895 garLoopResultBuilder]: At program point L552(line 552) the Hoare annotation is: (let ((.cse1 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~10#1| ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~tmp~10#1| 1)) (.cse0 (= ~pumpRunning~0 0))) (or (and .cse0 .cse1 (<= ~waterLevel~0 1) .cse2 .cse3 (<= 1 ~waterLevel~0) .cse4) (and .cse1 (= 2 ~waterLevel~0) .cse2 .cse3 .cse4 (let ((.cse5 (= ~methaneLevelCritical~0 0))) (or (and .cse0 (not .cse5)) (and .cse5 (= ~pumpRunning~0 1))))))) [2022-11-23 15:22:23,081 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-23 15:22:23,081 INFO L895 garLoopResultBuilder]: At program point L986(lines 986 993) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~10#1| ~systemActive~0) (= ~waterLevel~0 1) (= |ULTIMATE.start_main_~tmp~10#1| 1)) [2022-11-23 15:22:23,081 INFO L902 garLoopResultBuilder]: At program point L986-2(lines 986 993) the Hoare annotation is: true [2022-11-23 15:22:23,082 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:22:23,082 INFO L895 garLoopResultBuilder]: At program point L578-2(lines 570 583) the Hoare annotation is: (let ((.cse0 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~10#1| ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~10#1| 1))) (or (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2 (<= ~waterLevel~0 2) .cse3) (and (= ~pumpRunning~0 0) .cse0 (<= ~waterLevel~0 1) .cse1 .cse2 (<= 1 ~waterLevel~0) .cse3))) [2022-11-23 15:22:23,082 INFO L899 garLoopResultBuilder]: For program point L541(lines 540 587) no Hoare annotation was computed. [2022-11-23 15:22:23,082 INFO L895 garLoopResultBuilder]: At program point L562(line 562) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~10#1| ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~tmp~10#1| 1))) (or (and .cse0 .cse1 (<= ~waterLevel~0 1) .cse2 .cse3 (<= 1 ~waterLevel~0) .cse4) (and (let ((.cse5 (<= 2 ~waterLevel~0))) (or (and .cse1 (= ~methaneLevelCritical~0 0) .cse5 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse5 .cse2 .cse3 .cse4))) (<= ~waterLevel~0 2)))) [2022-11-23 15:22:23,082 INFO L902 garLoopResultBuilder]: At program point L591(lines 530 595) the Hoare annotation is: true [2022-11-23 15:22:23,082 INFO L899 garLoopResultBuilder]: For program point L550(lines 550 556) no Hoare annotation was computed. [2022-11-23 15:22:23,082 INFO L899 garLoopResultBuilder]: For program point L550-1(lines 550 556) no Hoare annotation was computed. [2022-11-23 15:22:23,083 INFO L895 garLoopResultBuilder]: At program point L588(lines 539 589) the Hoare annotation is: false [2022-11-23 15:22:23,083 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 637 661) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse2 .cse3) (or .cse0 .cse1 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse2 .cse3))) [2022-11-23 15:22:23,083 INFO L895 garLoopResultBuilder]: At program point L727(line 727) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 1)) .cse2) (or .cse0 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse1 .cse2))) [2022-11-23 15:22:23,083 INFO L895 garLoopResultBuilder]: At program point L727-1(line 727) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#t~ret39#1| ~methaneLevelCritical~0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 1)) (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1 .cse2) (or .cse0 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse1 .cse2))) [2022-11-23 15:22:23,083 INFO L895 garLoopResultBuilder]: At program point L651(line 651) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (<= 1 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 0)) (not (<= ~waterLevel~0 1)) .cse1 .cse2) (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1 .cse2))) [2022-11-23 15:22:23,083 INFO L899 garLoopResultBuilder]: For program point L645(lines 645 653) no Hoare annotation was computed. [2022-11-23 15:22:23,084 INFO L895 garLoopResultBuilder]: At program point L641(lines 641 658) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse2 .cse3) (or .cse0 .cse1 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse2 .cse3))) [2022-11-23 15:22:23,084 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 637 661) no Hoare annotation was computed. [2022-11-23 15:22:23,084 INFO L895 garLoopResultBuilder]: At program point L656(line 656) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse1 .cse2) (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1 .cse2))) [2022-11-23 15:22:23,084 INFO L899 garLoopResultBuilder]: For program point L656-1(lines 637 661) no Hoare annotation was computed. [2022-11-23 15:22:23,084 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 72 83) no Hoare annotation was computed. [2022-11-23 15:22:23,085 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 72 83) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= 0 ~systemActive~0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse1 .cse2 .cse3) (or (let ((.cse4 (= ~methaneLevelCritical~0 0))) (and (or .cse0 .cse4) (or (not .cse4) (not (= ~pumpRunning~0 1))))) .cse1 .cse2 (not (<= |old(~waterLevel~0)| 2)) .cse3 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:22:23,088 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:23,090 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:22:23,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:22:23 BoogieIcfgContainer [2022-11-23 15:22:23,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:22:23,123 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:22:23,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:22:23,123 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:22:23,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:59" (3/4) ... [2022-11-23 15:22:23,127 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:22:23,134 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-23 15:22:23,134 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-23 15:22:23,135 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-23 15:22:23,135 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-23 15:22:23,135 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-23 15:22:23,136 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:22:23,136 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-23 15:22:23,144 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 52 nodes and edges [2022-11-23 15:22:23,145 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-23 15:22:23,146 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 15:22:23,146 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:22:23,147 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:22:23,179 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) && ((((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel) || !(\old(methAndRunningLastTime) == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-23 15:22:23,180 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) && ((((!(\old(methAndRunningLastTime) == 0) || ((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-23 15:22:23,181 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(methAndRunningLastTime) == 0) || ((((tmp == 1 && !(\old(pumpRunning) == 0)) && pumpRunning == 0) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel + 1)) || (((methAndRunningLastTime == 0 && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive)) && ((((pumpRunning == 0 || !(\old(methAndRunningLastTime) == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) [2022-11-23 15:22:23,181 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) || !(methAndRunningLastTime == 0)) [2022-11-23 15:22:23,181 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(\old(methAndRunningLastTime) == 0) || (((tmp == 1 && pumpRunning == 0) && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical)) || (((tmp == methaneLevelCritical && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((((((!(methaneLevelCritical == 0) && \old(waterLevel) == waterLevel) || !(\old(methAndRunningLastTime) == 0)) || (methaneLevelCritical == 0 && !(\old(pumpRunning) == 1))) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methAndRunningLastTime == 0)) || !(\old(waterLevel) == 2)) || (!(\old(pumpRunning) == 0) && !(methaneLevelCritical == 0))) || 0 == systemActive)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 <= \old(waterLevel))) || ((pumpRunning == 0 && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel)) || 0 == systemActive)) && ((((((methAndRunningLastTime == 0 && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 0)) || 0 == systemActive) [2022-11-23 15:22:23,182 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((!(\old(methAndRunningLastTime) == 0) || (((((((tmp == 1 && !(\old(pumpRunning) == 0)) && pumpRunning == 0) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel + 1) && tmp___0 == 0) && tmp == methaneLevelCritical) && !(0 == systemActive))) || ((((((methAndRunningLastTime == 0 && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) && (methaneLevelCritical == 0 || !(\result == 0))) && (!(aux-isMethaneLevelCritical()-aux == 0) || methaneLevelCritical == 0))) || ((((((((tmp == 1 && !(\old(pumpRunning) == 0)) && pumpRunning == 0) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical) && (methaneLevelCritical == 0 || !(\result == 0))) && !(0 == systemActive)) && (!(aux-isMethaneLevelCritical()-aux == 0) || methaneLevelCritical == 0))) || ((((((pumpRunning == 0 && methAndRunningLastTime == 0) && !(methaneLevelCritical == 0)) && tmp___0 == 0) && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || !(1 <= \old(waterLevel))) || tmp___0 == 0) || 0 == systemActive)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 <= \old(waterLevel))) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel)) || 0 == systemActive)) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || \old(waterLevel) < 2) || tmp___0 == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((pumpRunning == 0 || !(\old(methAndRunningLastTime) == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) [2022-11-23 15:22:23,182 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && aux-isMethaneLevelCritical()-aux == methaneLevelCritical) && tmp == 1)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && ((((!(\old(pumpRunning) == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) [2022-11-23 15:22:23,183 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) && (((!(\old(methAndRunningLastTime) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-23 15:22:23,184 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(methAndRunningLastTime) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((((pumpRunning == \old(pumpRunning) && tmp == 1) && methAndRunningLastTime == 0) && !(pumpRunning == 0)) && \old(waterLevel) == waterLevel + 1)) || !(2 <= \old(waterLevel))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-23 15:22:23,212 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:22:23,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:22:23,213 INFO L158 Benchmark]: Toolchain (without parser) took 85283.57ms. Allocated memory was 125.8MB in the beginning and 851.4MB in the end (delta: 725.6MB). Free memory was 86.1MB in the beginning and 771.6MB in the end (delta: -685.5MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2022-11-23 15:22:23,214 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory was 93.1MB in the beginning and 92.9MB in the end (delta: 144.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:22:23,214 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.26ms. Allocated memory is still 125.8MB. Free memory was 85.9MB in the beginning and 67.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 15:22:23,214 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.87ms. Allocated memory is still 125.8MB. Free memory was 66.7MB in the beginning and 64.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:22:23,215 INFO L158 Benchmark]: Boogie Preprocessor took 71.61ms. Allocated memory is still 125.8MB. Free memory was 64.6MB in the beginning and 63.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:22:23,215 INFO L158 Benchmark]: RCFGBuilder took 934.19ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 63.0MB in the beginning and 114.6MB in the end (delta: -51.6MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-11-23 15:22:23,216 INFO L158 Benchmark]: TraceAbstraction took 83539.78ms. Allocated memory was 159.4MB in the beginning and 851.4MB in the end (delta: 692.1MB). Free memory was 113.8MB in the beginning and 777.9MB in the end (delta: -664.0MB). Peak memory consumption was 508.7MB. Max. memory is 16.1GB. [2022-11-23 15:22:23,216 INFO L158 Benchmark]: Witness Printer took 89.87ms. Allocated memory is still 851.4MB. Free memory was 777.9MB in the beginning and 771.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 15:22:23,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory was 93.1MB in the beginning and 92.9MB in the end (delta: 144.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.26ms. Allocated memory is still 125.8MB. Free memory was 85.9MB in the beginning and 67.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.87ms. Allocated memory is still 125.8MB. Free memory was 66.7MB in the beginning and 64.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.61ms. Allocated memory is still 125.8MB. Free memory was 64.6MB in the beginning and 63.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 934.19ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 63.0MB in the beginning and 114.6MB in the end (delta: -51.6MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 83539.78ms. Allocated memory was 159.4MB in the beginning and 851.4MB in the end (delta: 692.1MB). Free memory was 113.8MB in the beginning and 777.9MB in the end (delta: -664.0MB). Peak memory consumption was 508.7MB. Max. memory is 16.1GB. * Witness Printer took 89.87ms. Allocated memory is still 851.4MB. Free memory was 777.9MB in the beginning and 771.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1004]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 83.4s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 18.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3639 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3613 mSDsluCounter, 2891 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2294 mSDsCounter, 2416 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7968 IncrementalHoareTripleChecker+Invalid, 10384 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2416 mSolverCounterUnsat, 597 mSDtfsCounter, 7968 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1532 GetRequests, 1026 SyntacticMatches, 43 SemanticMatches, 463 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22888 ImplicationChecksByTransitivity, 38.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2392occurred in iteration=10, InterpolantAutomatonStates: 284, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 1070 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 35 LocationsWithAnnotation, 2807 PreInvPairs, 3052 NumberOfFragments, 1705 HoareAnnotationTreeSize, 2807 FomulaSimplifications, 7065 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 35 FomulaSimplificationsInter, 41457 FormulaSimplificationTreeSizeReductionInter, 6.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 999 NumberOfCodeBlocks, 999 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1343 ConstructedInterpolants, 0 QuantifiedInterpolants, 4486 SizeOfPredicates, 56 NumberOfNonLiveVariables, 1928 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 934/1193 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: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 986]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 560]: Loop Invariant Derived loop invariant: (((((methAndRunningLastTime == 0 && 2 <= waterLevel) && tmp == systemActive) && splverifierCounter == 0) && waterLevel <= 2) && tmp == 1) || ((((((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel <= 1) && tmp == systemActive) && splverifierCounter == 0) && 1 <= waterLevel) && tmp == 1) - InvariantResult [Line: 641]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 539]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 605]: Loop Invariant Derived loop invariant: (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) && ((((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel) || !(\old(methAndRunningLastTime) == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 663]: Loop Invariant Derived loop invariant: ((((((!(\old(methAndRunningLastTime) == 0) || ((((tmp == 1 && !(\old(pumpRunning) == 0)) && pumpRunning == 0) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel + 1)) || (((methAndRunningLastTime == 0 && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive)) && ((((pumpRunning == 0 || !(\old(methAndRunningLastTime) == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) - InvariantResult [Line: 1004]: Loop Invariant Derived loop invariant: ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) && (((!(\old(methAndRunningLastTime) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 843]: Loop Invariant Derived loop invariant: ((((((((!(\old(methAndRunningLastTime) == 0) || (((tmp == 1 && pumpRunning == 0) && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical)) || (((tmp == methaneLevelCritical && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((((((!(methaneLevelCritical == 0) && \old(waterLevel) == waterLevel) || !(\old(methAndRunningLastTime) == 0)) || (methaneLevelCritical == 0 && !(\old(pumpRunning) == 1))) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methAndRunningLastTime == 0)) || !(\old(waterLevel) == 2)) || (!(\old(pumpRunning) == 0) && !(methaneLevelCritical == 0))) || 0 == systemActive)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 <= \old(waterLevel))) || ((pumpRunning == 0 && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel)) || 0 == systemActive)) && ((((((methAndRunningLastTime == 0 && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 0)) || 0 == systemActive) - InvariantResult [Line: 540]: Loop Invariant Derived loop invariant: ((((((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel <= 1) && tmp == systemActive) && splverifierCounter == 0) && 1 <= waterLevel) && tmp == 1) || (((((methAndRunningLastTime == 0 && 2 == waterLevel) && tmp == systemActive) && splverifierCounter == 0) && tmp == 1) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) - InvariantResult [Line: 835]: Loop Invariant Derived loop invariant: ((((((((((!(\old(methAndRunningLastTime) == 0) || (((((((tmp == 1 && !(\old(pumpRunning) == 0)) && pumpRunning == 0) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel + 1) && tmp___0 == 0) && tmp == methaneLevelCritical) && !(0 == systemActive))) || ((((((methAndRunningLastTime == 0 && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) && (methaneLevelCritical == 0 || !(\result == 0))) && (!(aux-isMethaneLevelCritical()-aux == 0) || methaneLevelCritical == 0))) || ((((((((tmp == 1 && !(\old(pumpRunning) == 0)) && pumpRunning == 0) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel + 1) && tmp == methaneLevelCritical) && (methaneLevelCritical == 0 || !(\result == 0))) && !(0 == systemActive)) && (!(aux-isMethaneLevelCritical()-aux == 0) || methaneLevelCritical == 0))) || ((((((pumpRunning == 0 && methAndRunningLastTime == 0) && !(methaneLevelCritical == 0)) && tmp___0 == 0) && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || !(1 <= \old(waterLevel))) || tmp___0 == 0) || 0 == systemActive)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 <= \old(waterLevel))) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel)) || 0 == systemActive)) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || \old(waterLevel) < 2) || tmp___0 == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((pumpRunning == 0 || !(\old(methAndRunningLastTime) == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) - InvariantResult [Line: 727]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && aux-isMethaneLevelCritical()-aux == methaneLevelCritical) && tmp == 1)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && ((((!(\old(pumpRunning) == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 986]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == systemActive) && waterLevel == 1) && tmp == 1 - InvariantResult [Line: 530]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 671]: Loop Invariant Derived loop invariant: ((((!(\old(methAndRunningLastTime) == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((((pumpRunning == \old(pumpRunning) && tmp == 1) && methAndRunningLastTime == 0) && !(pumpRunning == 0)) && \old(waterLevel) == waterLevel + 1)) || !(2 <= \old(waterLevel))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) - InvariantResult [Line: 667]: Loop Invariant Derived loop invariant: (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) && ((((!(\old(methAndRunningLastTime) == 0) || ((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 914]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 904]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-23 15:22:23,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b99147a0-4539-4c66-aa78-efc6de87c412/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