./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V --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 aad1ec08d8a193b38b6e11f9698a2d5cafe1e5bac6d0d3a9987fa93ed6006219 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:24:59,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:24:59,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:24:59,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:24:59,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:24:59,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:24:59,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:24:59,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:24:59,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:24:59,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:24:59,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:24:59,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:24:59,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:24:59,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:24:59,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:24:59,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:24:59,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:24:59,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:24:59,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:24:59,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:24:59,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:24:59,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:24:59,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:24:59,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:24:59,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:24:59,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:24:59,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:24:59,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:24:59,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:24:59,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:24:59,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:24:59,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:24:59,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:24:59,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:24:59,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:24:59,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:24:59,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:24:59,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:24:59,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:24:59,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:24:59,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:24:59,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:24:59,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:24:59,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:24:59,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:24:59,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:24:59,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:24:59,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:24:59,654 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:24:59,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:24:59,654 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:24:59,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:24:59,655 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:24:59,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:24:59,655 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:24:59,656 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:24:59,656 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:24:59,656 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:24:59,657 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:24:59,657 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:24:59,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:24:59,658 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:24:59,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:24:59,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:24:59,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:24:59,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:24:59,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:24:59,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:24:59,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:24:59,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:24:59,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:24:59,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:24:59,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:24:59,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:24:59,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:24:59,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:24:59,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:24:59,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:24:59,664 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:24:59,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:24:59,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:24:59,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:24:59,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:24:59,665 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad1ec08d8a193b38b6e11f9698a2d5cafe1e5bac6d0d3a9987fa93ed6006219 [2021-11-23 02:25:00,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:25:00,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:25:00,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:25:00,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:25:00,051 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:25:00,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c [2021-11-23 02:25:00,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/data/b5d0c0edf/dfe6e11b2abe4324af703cd45bb610c7/FLAG3d1503bb4 [2021-11-23 02:25:00,976 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:25:00,977 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c [2021-11-23 02:25:01,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/data/b5d0c0edf/dfe6e11b2abe4324af703cd45bb610c7/FLAG3d1503bb4 [2021-11-23 02:25:01,197 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/data/b5d0c0edf/dfe6e11b2abe4324af703cd45bb610c7 [2021-11-23 02:25:01,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:25:01,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:25:01,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:01,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:25:01,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:25:01,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:01,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a608198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01, skipping insertion in model container [2021-11-23 02:25:01,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:01,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:25:01,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:25:01,620 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c[7021,7034] [2021-11-23 02:25:01,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:01,762 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:25:01,806 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c[7021,7034] [2021-11-23 02:25:01,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:01,904 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:25:01,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01 WrapperNode [2021-11-23 02:25:01,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:01,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:01,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:25:01,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:25:01,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:01,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:02,000 INFO L137 Inliner]: procedures = 54, calls = 154, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 247 [2021-11-23 02:25:02,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:02,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:25:02,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:25:02,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:25:02,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:02,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:02,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:02,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:02,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:02,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:02,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:02,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:25:02,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:25:02,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:25:02,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:25:02,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01" (1/1) ... [2021-11-23 02:25:02,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:02,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:02,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:25:02,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:25:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:25:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 02:25:02,212 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 02:25:02,212 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 02:25:02,212 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 02:25:02,212 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 02:25:02,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 02:25:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 02:25:02,213 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 02:25:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 02:25:02,213 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 02:25:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 02:25:02,214 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 02:25:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:25:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 02:25:02,215 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 02:25:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:25:02,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:25:02,370 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:25:02,373 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:25:02,893 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:25:03,030 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:25:03,030 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:25:03,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:03 BoogieIcfgContainer [2021-11-23 02:25:03,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:25:03,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:25:03,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:25:03,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:25:03,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:25:01" (1/3) ... [2021-11-23 02:25:03,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61234659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:03, skipping insertion in model container [2021-11-23 02:25:03,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:01" (2/3) ... [2021-11-23 02:25:03,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61234659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:03, skipping insertion in model container [2021-11-23 02:25:03,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:03" (3/3) ... [2021-11-23 02:25:03,053 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product37.cil.c [2021-11-23 02:25:03,061 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:25:03,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:25:03,144 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:25:03,160 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:25:03,161 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:25:03,211 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) [2021-11-23 02:25:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:25:03,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:03,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:03,223 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:03,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:03,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1102543177, now seen corresponding path program 1 times [2021-11-23 02:25:03,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:03,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869102762] [2021-11-23 02:25:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:03,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:03,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:03,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869102762] [2021-11-23 02:25:03,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869102762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:03,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:03,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:25:03,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250929878] [2021-11-23 02:25:03,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:03,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:25:03,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:25:03,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:25:03,732 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) [2021-11-23 02:25:03,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:03,875 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2021-11-23 02:25:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:25:03,879 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 [2021-11-23 02:25:03,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:03,895 INFO L225 Difference]: With dead ends: 114 [2021-11-23 02:25:03,895 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 02:25:03,906 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:25:03,911 INFO L933 BasicCegarLoop]: 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 [2021-11-23 02:25:03,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:25:03,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 02:25:03,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-23 02:25:03,986 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) [2021-11-23 02:25:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-11-23 02:25:03,997 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 17 [2021-11-23 02:25:03,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:03,999 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-11-23 02:25:03,999 INFO L471 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) [2021-11-23 02:25:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-11-23 02:25:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:25:04,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:04,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:04,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:25:04,011 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash 561625036, now seen corresponding path program 1 times [2021-11-23 02:25:04,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:04,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823007211] [2021-11-23 02:25:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:04,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:04,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:04,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823007211] [2021-11-23 02:25:04,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823007211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:04,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:04,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:25:04,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408277129] [2021-11-23 02:25:04,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:04,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:25:04,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:25:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:25:04,187 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) [2021-11-23 02:25:04,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:04,275 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2021-11-23 02:25:04,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:25:04,277 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 [2021-11-23 02:25:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:04,282 INFO L225 Difference]: With dead ends: 83 [2021-11-23 02:25:04,283 INFO L226 Difference]: Without dead ends: 45 [2021-11-23 02:25:04,291 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:25:04,294 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 45 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 [2021-11-23 02:25:04,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:25:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-23 02:25:04,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-23 02:25:04,314 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) [2021-11-23 02:25:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2021-11-23 02:25:04,324 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 18 [2021-11-23 02:25:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:04,325 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2021-11-23 02:25:04,326 INFO L471 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) [2021-11-23 02:25:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2021-11-23 02:25:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:25:04,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:04,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:04,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:25:04,332 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:04,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash 709832789, now seen corresponding path program 1 times [2021-11-23 02:25:04,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:04,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344684417] [2021-11-23 02:25:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:04,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:04,457 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:04,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344684417] [2021-11-23 02:25:04,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344684417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:04,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:04,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:25:04,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13817831] [2021-11-23 02:25:04,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:04,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:25:04,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:04,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:25:04,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:25:04,462 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-11-23 02:25:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:04,512 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2021-11-23 02:25:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:25:04,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 [2021-11-23 02:25:04,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:04,515 INFO L225 Difference]: With dead ends: 88 [2021-11-23 02:25:04,516 INFO L226 Difference]: Without dead ends: 45 [2021-11-23 02:25:04,517 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:25:04,518 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:04,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 41 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:25:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-23 02:25:04,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-23 02:25:04,536 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) [2021-11-23 02:25:04,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2021-11-23 02:25:04,537 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 20 [2021-11-23 02:25:04,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:04,538 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2021-11-23 02:25:04,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-11-23 02:25:04,539 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2021-11-23 02:25:04,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:25:04,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:04,540 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:04,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:25:04,541 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:04,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:04,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1315618053, now seen corresponding path program 1 times [2021-11-23 02:25:04,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:04,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890930051] [2021-11-23 02:25:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:04,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:25:04,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:04,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890930051] [2021-11-23 02:25:04,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890930051] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:25:04,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360411684] [2021-11-23 02:25:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:04,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:04,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:04,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:25:04,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:25:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:04,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:25:04,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:25:05,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:25:05,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360411684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:05,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:25:05,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2021-11-23 02:25:05,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586798224] [2021-11-23 02:25:05,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:05,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:25:05,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:05,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:25:05,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:25:05,130 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:25:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:05,252 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2021-11-23 02:25:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:25:05,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-11-23 02:25:05,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:05,256 INFO L225 Difference]: With dead ends: 123 [2021-11-23 02:25:05,256 INFO L226 Difference]: Without dead ends: 80 [2021-11-23 02:25:05,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:25:05,259 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 35 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:05,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 95 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:25:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-23 02:25:05,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-11-23 02:25:05,281 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) [2021-11-23 02:25:05,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2021-11-23 02:25:05,283 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 27 [2021-11-23 02:25:05,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:05,284 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2021-11-23 02:25:05,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:25:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2021-11-23 02:25:05,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:25:05,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:05,287 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:25:05,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:25:05,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:05,508 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1468313323, now seen corresponding path program 1 times [2021-11-23 02:25:05,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:05,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642540732] [2021-11-23 02:25:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:05,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:05,611 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:05,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642540732] [2021-11-23 02:25:05,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642540732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:05,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:05,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:25:05,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265700952] [2021-11-23 02:25:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:05,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:25:05,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:25:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:25:05,618 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:25:05,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:05,852 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2021-11-23 02:25:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:25:05,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-11-23 02:25:05,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:05,857 INFO L225 Difference]: With dead ends: 226 [2021-11-23 02:25:05,857 INFO L226 Difference]: Without dead ends: 150 [2021-11-23 02:25:05,859 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:25:05,861 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 32 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:05,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 214 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:25:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-23 02:25:05,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 142. [2021-11-23 02:25:05,895 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) [2021-11-23 02:25:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 173 transitions. [2021-11-23 02:25:05,898 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 173 transitions. Word has length 28 [2021-11-23 02:25:05,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:05,904 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 173 transitions. [2021-11-23 02:25:05,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:25:05,905 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 173 transitions. [2021-11-23 02:25:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 02:25:05,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:05,907 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:25:05,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:25:05,908 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:05,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:05,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1270935420, now seen corresponding path program 1 times [2021-11-23 02:25:05,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:05,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931512729] [2021-11-23 02:25:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:05,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:06,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:06,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931512729] [2021-11-23 02:25:06,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931512729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:06,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:06,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:25:06,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816014737] [2021-11-23 02:25:06,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:06,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:25:06,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:06,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:25:06,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:25:06,185 INFO L87 Difference]: Start difference. First operand 142 states and 173 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:25:06,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:06,701 INFO L93 Difference]: Finished difference Result 501 states and 624 transitions. [2021-11-23 02:25:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:25:06,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2021-11-23 02:25:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:06,715 INFO L225 Difference]: With dead ends: 501 [2021-11-23 02:25:06,716 INFO L226 Difference]: Without dead ends: 361 [2021-11-23 02:25:06,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:25:06,728 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 200 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:06,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 247 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:25:06,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-11-23 02:25:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 317. [2021-11-23 02:25:06,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 218 states have (on average 1.2064220183486238) internal successors, (263), 230 states have internal predecessors, (263), 49 states have call successors, (49), 47 states have call predecessors, (49), 49 states have return successors, (65), 51 states have call predecessors, (65), 49 states have call successors, (65) [2021-11-23 02:25:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 377 transitions. [2021-11-23 02:25:06,837 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 377 transitions. Word has length 31 [2021-11-23 02:25:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:06,838 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 377 transitions. [2021-11-23 02:25:06,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:25:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 377 transitions. [2021-11-23 02:25:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:25:06,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:06,851 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:25:06,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:25:06,851 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:06,852 INFO L85 PathProgramCache]: Analyzing trace with hash -334915798, now seen corresponding path program 1 times [2021-11-23 02:25:06,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:06,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427464227] [2021-11-23 02:25:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:06,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:06,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:06,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427464227] [2021-11-23 02:25:06,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427464227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:06,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:06,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:25:06,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020728528] [2021-11-23 02:25:06,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:06,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:25:06,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:25:06,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:25:06,974 INFO L87 Difference]: Start difference. First operand 317 states and 377 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 02:25:07,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:07,102 INFO L93 Difference]: Finished difference Result 488 states and 607 transitions. [2021-11-23 02:25:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:25:07,103 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), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2021-11-23 02:25:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:07,113 INFO L225 Difference]: With dead ends: 488 [2021-11-23 02:25:07,113 INFO L226 Difference]: Without dead ends: 486 [2021-11-23 02:25:07,114 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:25:07,117 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 31 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 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 [2021-11-23 02:25:07,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 89 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:25:07,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-11-23 02:25:07,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2021-11-23 02:25:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 333 states have (on average 1.2102102102102101) internal successors, (403), 353 states have internal predecessors, (403), 76 states have call successors, (76), 73 states have call predecessors, (76), 76 states have return successors, (122), 79 states have call predecessors, (122), 76 states have call successors, (122) [2021-11-23 02:25:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 601 transitions. [2021-11-23 02:25:07,234 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 601 transitions. Word has length 34 [2021-11-23 02:25:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:07,237 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 601 transitions. [2021-11-23 02:25:07,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 02:25:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 601 transitions. [2021-11-23 02:25:07,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 02:25:07,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:07,245 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:07,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:25:07,246 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:07,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1678230055, now seen corresponding path program 1 times [2021-11-23 02:25:07,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:07,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098804953] [2021-11-23 02:25:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:07,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:25:07,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:07,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098804953] [2021-11-23 02:25:07,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098804953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:07,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:07,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:25:07,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164619356] [2021-11-23 02:25:07,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:07,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:25:07,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:07,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:25:07,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:25:07,392 INFO L87 Difference]: Start difference. First operand 486 states and 601 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:25:07,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:07,522 INFO L93 Difference]: Finished difference Result 765 states and 969 transitions. [2021-11-23 02:25:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:25:07,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2021-11-23 02:25:07,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:07,528 INFO L225 Difference]: With dead ends: 765 [2021-11-23 02:25:07,528 INFO L226 Difference]: Without dead ends: 425 [2021-11-23 02:25:07,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:25:07,531 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 38 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:07,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 148 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:25:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-23 02:25:07,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 399. [2021-11-23 02:25:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 270 states have (on average 1.1925925925925926) internal successors, (322), 287 states have internal predecessors, (322), 64 states have call successors, (64), 61 states have call predecessors, (64), 64 states have return successors, (94), 65 states have call predecessors, (94), 64 states have call successors, (94) [2021-11-23 02:25:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 480 transitions. [2021-11-23 02:25:07,605 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 480 transitions. Word has length 60 [2021-11-23 02:25:07,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:07,606 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 480 transitions. [2021-11-23 02:25:07,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:25:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 480 transitions. [2021-11-23 02:25:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:25:07,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:07,609 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:07,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:25:07,610 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:07,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash -549369746, now seen corresponding path program 1 times [2021-11-23 02:25:07,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:07,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225280746] [2021-11-23 02:25:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:07,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 02:25:07,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:07,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225280746] [2021-11-23 02:25:07,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225280746] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:25:07,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17074410] [2021-11-23 02:25:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:07,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:07,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:07,731 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:25:07,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:25:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:07,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 02:25:07,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:08,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:25:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 02:25:09,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17074410] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:25:09,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [405980377] [2021-11-23 02:25:09,145 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2021-11-23 02:25:09,146 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:25:09,153 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:25:09,162 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:25:09,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:25:18,721 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 46 for LOIs [2021-11-23 02:25:18,737 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 47 for LOIs [2021-11-23 02:25:19,188 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 40 for LOIs [2021-11-23 02:25:19,359 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 23 for LOIs [2021-11-23 02:25:19,363 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 45 for LOIs [2021-11-23 02:25:19,379 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 38 for LOIs [2021-11-23 02:25:19,384 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:25:26,253 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6589#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| 0)) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= |old(~methAndRunningLastTime~0)| 1) (<= 0 ~methaneLevelCritical~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 0)) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= ~methaneLevelCritical~0 2147483647) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (not (= ~methAndRunningLastTime~0 0)) (<= ~methAndRunningLastTime~0 1) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 02:25:26,253 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:25:26,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:25:26,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 23 [2021-11-23 02:25:26,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044122388] [2021-11-23 02:25:26,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:25:26,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 02:25:26,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:26,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 02:25:26,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=2495, Unknown=0, NotChecked=0, Total=2756 [2021-11-23 02:25:26,258 INFO L87 Difference]: Start difference. First operand 399 states and 480 transitions. Second operand has 23 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 10 states have call successors, (26), 9 states have call predecessors, (26), 11 states have return successors, (24), 12 states have call predecessors, (24), 10 states have call successors, (24) [2021-11-23 02:25:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:27,392 INFO L93 Difference]: Finished difference Result 840 states and 1030 transitions. [2021-11-23 02:25:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 02:25:27,393 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 10 states have call successors, (26), 9 states have call predecessors, (26), 11 states have return successors, (24), 12 states have call predecessors, (24), 10 states have call successors, (24) Word has length 68 [2021-11-23 02:25:27,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:27,400 INFO L225 Difference]: With dead ends: 840 [2021-11-23 02:25:27,401 INFO L226 Difference]: Without dead ends: 619 [2021-11-23 02:25:27,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 157 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1342 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=374, Invalid=3408, Unknown=0, NotChecked=0, Total=3782 [2021-11-23 02:25:27,406 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 296 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:27,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 239 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 02:25:27,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-23 02:25:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 595. [2021-11-23 02:25:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 405 states have (on average 1.1901234567901235) internal successors, (482), 429 states have internal predecessors, (482), 94 states have call successors, (94), 88 states have call predecessors, (94), 95 states have return successors, (138), 95 states have call predecessors, (138), 94 states have call successors, (138) [2021-11-23 02:25:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 714 transitions. [2021-11-23 02:25:27,476 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 714 transitions. Word has length 68 [2021-11-23 02:25:27,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:27,477 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 714 transitions. [2021-11-23 02:25:27,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 10 states have call successors, (26), 9 states have call predecessors, (26), 11 states have return successors, (24), 12 states have call predecessors, (24), 10 states have call successors, (24) [2021-11-23 02:25:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 714 transitions. [2021-11-23 02:25:27,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:25:27,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:27,482 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:27,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:25:27,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:27,704 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:27,704 INFO L85 PathProgramCache]: Analyzing trace with hash 588054015, now seen corresponding path program 1 times [2021-11-23 02:25:27,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:27,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371045787] [2021-11-23 02:25:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:27,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 02:25:27,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:27,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371045787] [2021-11-23 02:25:27,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371045787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:25:27,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912283779] [2021-11-23 02:25:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:27,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:27,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:27,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:25:27,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:25:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:28,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 02:25:28,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:25:28,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:25:28,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912283779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:28,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:25:28,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 16 [2021-11-23 02:25:28,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86925591] [2021-11-23 02:25:28,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:28,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:25:28,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:28,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:25:28,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:25:28,282 INFO L87 Difference]: Start difference. First operand 595 states and 714 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-23 02:25:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:28,719 INFO L93 Difference]: Finished difference Result 1158 states and 1408 transitions. [2021-11-23 02:25:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:25:28,720 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 71 [2021-11-23 02:25:28,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:28,723 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 02:25:28,724 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:25:28,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:25:28,736 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 43 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:28,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 311 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:25:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:25:28,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:25:28,739 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) [2021-11-23 02:25:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:25:28,739 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2021-11-23 02:25:28,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:28,740 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:25:28,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-23 02:25:28,740 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:25:28,741 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:25:28,744 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:25:28,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:25:28,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:25:28,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:25:34,995 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 87 93) no Hoare annotation was computed. [2021-11-23 02:25:34,996 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 87 93) the Hoare annotation is: true [2021-11-23 02:25:34,996 INFO L854 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 373 384) the Hoare annotation is: (let ((.cse1 (and (not (= ~waterLevel~0 1)) (= ~pumpRunning~0 0))) (.cse4 (not (= |old(~methaneLevelCritical~0)| 0))) (.cse5 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0)) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (= ~methaneLevelCritical~0 1)) (.cse3 (not (= |old(~methaneLevelCritical~0)| 1))) (.cse6 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse0 .cse1 .cse5) (or .cse4 .cse0 .cse5 .cse6) (or .cse0 .cse2 .cse3 .cse6))) [2021-11-23 02:25:34,997 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 373 384) no Hoare annotation was computed. [2021-11-23 02:25:34,997 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 817 846) no Hoare annotation was computed. [2021-11-23 02:25:34,997 INFO L858 garLoopResultBuilder]: For program point L831(lines 831 835) no Hoare annotation was computed. [2021-11-23 02:25:34,997 INFO L861 garLoopResultBuilder]: At program point L831-1(lines 831 835) the Hoare annotation is: true [2021-11-23 02:25:34,997 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 817 846) the Hoare annotation is: true [2021-11-23 02:25:34,997 INFO L861 garLoopResultBuilder]: At program point L827-2(lines 827 841) the Hoare annotation is: true [2021-11-23 02:25:34,998 INFO L861 garLoopResultBuilder]: At program point L823(line 823) the Hoare annotation is: true [2021-11-23 02:25:34,998 INFO L858 garLoopResultBuilder]: For program point L823-1(line 823) no Hoare annotation was computed. [2021-11-23 02:25:34,998 INFO L861 garLoopResultBuilder]: At program point L842(lines 817 846) the Hoare annotation is: true [2021-11-23 02:25:34,998 INFO L858 garLoopResultBuilder]: For program point L838(line 838) no Hoare annotation was computed. [2021-11-23 02:25:34,998 INFO L861 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 385 393) the Hoare annotation is: true [2021-11-23 02:25:34,998 INFO L858 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 385 393) no Hoare annotation was computed. [2021-11-23 02:25:34,999 INFO L858 garLoopResultBuilder]: For program point L329(lines 329 335) no Hoare annotation was computed. [2021-11-23 02:25:34,999 INFO L854 garLoopResultBuilder]: At program point L135(line 135) the Hoare annotation is: (let ((.cse6 (= |old(~pumpRunning~0)| 0))) (let ((.cse3 (not .cse6)) (.cse5 (not (= ~methaneLevelCritical~0 1))) (.cse2 (and (not (= |old(~waterLevel~0)| 1)) .cse6)) (.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 (and (or (not (= ~pumpRunning~0 0)) (= ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~1#1| ~methaneLevelCritical~0)) .cse2) (or .cse3 .cse4 .cse0 .cse1) (or .cse3 .cse4 .cse0 .cse5) (or .cse0 .cse5 .cse2) (or .cse4 (= ~methAndRunningLastTime~0 0) .cse0 .cse1)))) [2021-11-23 02:25:34,999 INFO L854 garLoopResultBuilder]: At program point L445(line 445) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (not (= ~methaneLevelCritical~0 1))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse4 (and (not (= |old(~waterLevel~0)| 1)) (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse3) (or .cse1 .cse3 .cse4) (or .cse1 .cse2 .cse4))) [2021-11-23 02:25:35,000 INFO L854 garLoopResultBuilder]: At program point L140(line 140) the Hoare annotation is: (let ((.cse7 (= ~pumpRunning~0 0))) (let ((.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse5 (and .cse7 (= ~methAndRunningLastTime~0 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (and .cse7 (= ~waterLevel~0 1))) (.cse6 (not (= ~methaneLevelCritical~0 1))) (.cse3 (and (not (= |old(~waterLevel~0)| 1)) (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse0 .cse1 .cse5) (or .cse4 .cse0 .cse6 .cse5) (or .cse0 .cse2 .cse6 .cse3)))) [2021-11-23 02:25:35,000 INFO L854 garLoopResultBuilder]: At program point L140-1(lines 121 145) the Hoare annotation is: (let ((.cse3 (= ~pumpRunning~0 0)) (.cse14 (= ~methaneLevelCritical~0 0)) (.cse13 (= 1 ~systemActive~0)) (.cse11 (= ~waterLevel~0 1)) (.cse10 (= ~methAndRunningLastTime~0 0)) (.cse9 (not (= |old(~waterLevel~0)| 1))) (.cse15 (= |old(~pumpRunning~0)| 0))) (let ((.cse4 (= |timeShift_processEnvironment_~tmp~1#1| ~methaneLevelCritical~0)) (.cse5 (and .cse9 .cse15)) (.cse8 (and (not .cse11) .cse10)) (.cse12 (not (= ~methaneLevelCritical~0 1))) (.cse6 (not .cse15)) (.cse1 (and .cse3 .cse14 .cse13 .cse11)) (.cse7 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not .cse13)) (.cse2 (not .cse14))) (and (or .cse0 .cse1 .cse2 (and (not .cse3) .cse4) .cse5) (or .cse6 .cse3 .cse7 .cse0 .cse2 .cse8) (or .cse6 .cse7 .cse9 .cse0 (and .cse10 .cse11) .cse12) (or .cse0 (and .cse3 .cse13 .cse4) (and .cse3 .cse11) .cse12 .cse5) (or .cse7 .cse0 .cse8 .cse12 (and .cse3 .cse13)) (or .cse6 .cse7 .cse9 .cse0 .cse1 .cse2) (or .cse7 .cse10 .cse0 .cse2)))) [2021-11-23 02:25:35,000 INFO L858 garLoopResultBuilder]: For program point L74-1(lines 74 80) no Hoare annotation was computed. [2021-11-23 02:25:35,001 INFO L854 garLoopResultBuilder]: At program point L322(line 322) the Hoare annotation is: (let ((.cse3 (= ~pumpRunning~0 0)) (.cse14 (= ~methaneLevelCritical~0 0)) (.cse13 (= 1 ~systemActive~0)) (.cse11 (= ~waterLevel~0 1)) (.cse10 (= ~methAndRunningLastTime~0 0)) (.cse9 (not (= |old(~waterLevel~0)| 1))) (.cse15 (= |old(~pumpRunning~0)| 0))) (let ((.cse4 (= |timeShift_processEnvironment_~tmp~1#1| ~methaneLevelCritical~0)) (.cse5 (and .cse9 .cse15)) (.cse8 (and (not .cse11) .cse10)) (.cse12 (not (= ~methaneLevelCritical~0 1))) (.cse6 (not .cse15)) (.cse1 (and .cse3 .cse14 .cse13 .cse11)) (.cse7 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not .cse13)) (.cse2 (not .cse14))) (and (or .cse0 .cse1 .cse2 (and (not .cse3) .cse4) .cse5) (or .cse6 .cse3 .cse7 .cse0 .cse2 .cse8) (or .cse6 .cse7 .cse9 .cse0 (and .cse10 .cse11) .cse12) (or .cse0 (and .cse3 .cse13 .cse4) (and .cse3 .cse11) .cse12 .cse5) (or .cse7 .cse0 .cse8 .cse12 (and .cse3 .cse13)) (or .cse6 .cse7 .cse9 .cse0 .cse1 .cse2) (or .cse7 .cse10 .cse0 .cse2)))) [2021-11-23 02:25:35,001 INFO L858 garLoopResultBuilder]: For program point L322-1(line 322) no Hoare annotation was computed. [2021-11-23 02:25:35,001 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 66 85) no Hoare annotation was computed. [2021-11-23 02:25:35,002 INFO L854 garLoopResultBuilder]: At program point L129(lines 129 137) the Hoare annotation is: (let ((.cse7 (= |old(~pumpRunning~0)| 0))) (let ((.cse4 (not .cse7)) (.cse6 (not (= ~methaneLevelCritical~0 1))) (.cse2 (and (or (not (= ~pumpRunning~0 0)) (= ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~1#1| ~methaneLevelCritical~0))) (.cse3 (and (not (= |old(~waterLevel~0)| 1)) .cse7)) (.cse5 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse0 .cse1) (or .cse4 .cse5 .cse0 .cse6) (or .cse0 .cse6 .cse2 .cse3) (or .cse5 (= ~methAndRunningLastTime~0 0) .cse0 .cse1)))) [2021-11-23 02:25:35,002 INFO L858 garLoopResultBuilder]: For program point L125(lines 125 142) no Hoare annotation was computed. [2021-11-23 02:25:35,002 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 63 86) the Hoare annotation is: (let ((.cse5 (= ~pumpRunning~0 0)) (.cse10 (= 1 ~systemActive~0)) (.cse9 (= |old(~pumpRunning~0)| 0))) (let ((.cse3 (not (= ~methaneLevelCritical~0 1))) (.cse4 (not .cse9)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse2 (not .cse10)) (.cse8 (not (= ~methaneLevelCritical~0 0))) (.cse6 (and .cse10 (or (not .cse5) (= ~waterLevel~0 1)))) (.cse7 (and (not (= |old(~waterLevel~0)| 1)) .cse9))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse0 .cse2 .cse3) (or .cse2 .cse3 .cse6 .cse7) (or .cse4 .cse5 .cse0 .cse2 .cse8) (or .cse0 .cse1 .cse2 .cse8) (or .cse2 .cse8 .cse6 .cse7)))) [2021-11-23 02:25:35,003 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 63 86) no Hoare annotation was computed. [2021-11-23 02:25:35,003 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 445) no Hoare annotation was computed. [2021-11-23 02:25:35,003 INFO L858 garLoopResultBuilder]: For program point L328(lines 328 338) no Hoare annotation was computed. [2021-11-23 02:25:35,003 INFO L854 garLoopResultBuilder]: At program point L167(line 167) the Hoare annotation is: (let ((.cse8 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse8)) (.cse4 (not (= ~methaneLevelCritical~0 1))) (.cse5 (not (= ~pumpRunning~0 0))) (.cse6 (= ~waterLevel~0 1)) (.cse7 (and (not (= |old(~waterLevel~0)| 1)) .cse8)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse2 .cse4) (or .cse5 .cse2 .cse4 .cse6 .cse7) (or .cse5 .cse2 .cse3 .cse6 .cse7) (or .cse1 (= ~methAndRunningLastTime~0 0) .cse2 .cse3)))) [2021-11-23 02:25:35,004 INFO L854 garLoopResultBuilder]: At program point L167-1(line 167) the Hoare annotation is: (let ((.cse7 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse7)) (.cse5 (not (= ~methaneLevelCritical~0 1))) (.cse4 (or (not (= ~pumpRunning~0 0)) (= ~waterLevel~0 1))) (.cse6 (and (not (= |old(~waterLevel~0)| 1)) .cse7)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse2 (and .cse4 (= |timeShift_isMethaneAlarm_#t~ret6#1| 1)) .cse5 .cse6) (or .cse0 .cse1 .cse2 .cse5) (or .cse2 .cse3 (and (= |timeShift_isMethaneAlarm_#t~ret6#1| ~methaneLevelCritical~0) .cse4) .cse6) (or .cse1 (= ~methAndRunningLastTime~0 0) .cse2 .cse3)))) [2021-11-23 02:25:35,004 INFO L854 garLoopResultBuilder]: At program point L324(lines 324 341) the Hoare annotation is: (let ((.cse15 (= 1 ~systemActive~0)) (.cse10 (not (= |old(~waterLevel~0)| 1))) (.cse16 (= |old(~pumpRunning~0)| 0)) (.cse3 (= ~pumpRunning~0 0)) (.cse11 (= ~waterLevel~0 1))) (let ((.cse4 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| 0)) (.cse5 (= |timeShift_processEnvironment_~tmp~1#1| ~methaneLevelCritical~0)) (.cse2 (and .cse3 .cse11)) (.cse6 (and .cse10 .cse16)) (.cse13 (not .cse11)) (.cse8 (= ~methAndRunningLastTime~0 0)) (.cse12 (not (= ~methaneLevelCritical~0 1))) (.cse14 (and .cse3 .cse15)) (.cse9 (not .cse16)) (.cse7 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not .cse15)) (.cse1 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 (and (not .cse3) .cse4 .cse5) .cse6) (or .cse7 .cse0 .cse1 (and .cse8 .cse4)) (or .cse9 .cse7 .cse10 .cse0 (and .cse8 .cse11) .cse12) (or .cse13 .cse9 .cse7 .cse0 .cse1 .cse14) (or .cse0 (and .cse3 .cse15 .cse5) .cse2 .cse12 .cse6) (or .cse7 .cse0 (and .cse13 .cse8) .cse12 .cse14) (or .cse9 .cse7 .cse10 .cse0 .cse1 .cse11)))) [2021-11-23 02:25:35,005 INFO L854 garLoopResultBuilder]: At program point L324-1(lines 316 344) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse5 (= ~waterLevel~0 1))) (let ((.cse10 (not .cse5)) (.cse14 (not (= |old(~waterLevel~0)| 1))) (.cse20 (= |old(~pumpRunning~0)| 0)) (.cse21 (= ~methaneLevelCritical~0 1)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse18 (= ~methaneLevelCritical~0 0)) (.cse19 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| 0)) (.cse4 (= 1 ~systemActive~0)) (.cse11 (not .cse2)) (.cse17 (= |timeShift_processEnvironment_~tmp~1#1| ~methaneLevelCritical~0))) (let ((.cse0 (and .cse3 .cse18 .cse19 .cse4 (or .cse11 .cse5) .cse17)) (.cse12 (and .cse2 .cse3 .cse4 .cse21 .cse5)) (.cse9 (not .cse21)) (.cse7 (and .cse14 .cse20)) (.cse13 (not .cse20)) (.cse8 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not .cse4)) (.cse6 (not .cse18)) (.cse15 (and .cse10 .cse3 .cse18 .cse19 .cse4)) (.cse16 (and .cse2 .cse3 .cse18 .cse19 .cse4))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4 .cse5) .cse6 .cse7) (or .cse8 .cse1 .cse9 (and .cse10 .cse11) (and .cse2 .cse3)) (or .cse12 .cse13 .cse8 .cse14 .cse1 .cse9) (or .cse0 .cse8 .cse1 .cse6 .cse15 .cse16) (or .cse13 .cse8 .cse14 .cse1 .cse6 .cse5) (or .cse12 .cse1 (and .cse2 .cse3 .cse17) .cse9 .cse7) (or .cse13 .cse8 .cse1 .cse6 .cse15 .cse16))))) [2021-11-23 02:25:35,005 INFO L854 garLoopResultBuilder]: At program point L287-2(lines 281 292) the Hoare annotation is: (let ((.cse2 (or (not (= ~pumpRunning~0 0)) (= ~waterLevel~0 1))) (.cse0 (= ~methaneLevelCritical~0 0)) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse4 (= ~methaneLevelCritical~0 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse4 .cse2 .cse3) (and .cse5 .cse0 .cse1 .cse3) (and .cse5 .cse1 .cse4 .cse3))) [2021-11-23 02:25:35,005 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 277) no Hoare annotation was computed. [2021-11-23 02:25:35,005 INFO L858 garLoopResultBuilder]: For program point L271-1(lines 271 277) no Hoare annotation was computed. [2021-11-23 02:25:35,006 INFO L861 garLoopResultBuilder]: At program point L300(lines 241 304) the Hoare annotation is: true [2021-11-23 02:25:35,006 INFO L854 garLoopResultBuilder]: At program point L263(line 263) the Hoare annotation is: (let ((.cse5 (= ~pumpRunning~0 0))) (let ((.cse3 (= ~methaneLevelCritical~0 1)) (.cse0 (not (= ~waterLevel~0 1))) (.cse1 (not .cse5)) (.cse6 (= ~methAndRunningLastTime~0 0)) (.cse7 (= ~methaneLevelCritical~0 0)) (.cse2 (= 1 ~systemActive~0)) (.cse4 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse7 .cse2 .cse4) (and .cse6 .cse7 .cse2 .cse4)))) [2021-11-23 02:25:35,006 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 02:25:35,006 INFO L854 garLoopResultBuilder]: At program point L297(lines 250 298) the Hoare annotation is: false [2021-11-23 02:25:35,006 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:25:35,007 INFO L858 garLoopResultBuilder]: For program point L252(lines 251 296) no Hoare annotation was computed. [2021-11-23 02:25:35,007 INFO L854 garLoopResultBuilder]: At program point L273(line 273) the Hoare annotation is: (let ((.cse4 (= 1 ~systemActive~0)) (.cse5 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (let ((.cse0 (or (and .cse4 .cse5 (= ~waterLevel~0 1)) (and (not (= ~pumpRunning~0 0)) .cse4 .cse5))) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse2 (= ~methaneLevelCritical~0 1))) (or (and .cse0 .cse1) (and .cse0 .cse2) (and .cse3 .cse1 .cse4 .cse5) (and .cse3 .cse4 .cse2 .cse5)))) [2021-11-23 02:25:35,007 INFO L854 garLoopResultBuilder]: At program point L294(lines 251 296) the Hoare annotation is: (let ((.cse5 (= ~pumpRunning~0 0))) (let ((.cse3 (= ~methaneLevelCritical~0 1)) (.cse0 (not (= ~waterLevel~0 1))) (.cse1 (not .cse5)) (.cse6 (= ~methAndRunningLastTime~0 0)) (.cse7 (= ~methaneLevelCritical~0 0)) (.cse2 (= 1 ~systemActive~0)) (.cse4 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse7 .cse2 .cse4) (and .cse6 .cse7 .cse2 .cse4)))) [2021-11-23 02:25:35,007 INFO L858 garLoopResultBuilder]: For program point L261(lines 261 267) no Hoare annotation was computed. [2021-11-23 02:25:35,007 INFO L858 garLoopResultBuilder]: For program point L261-1(lines 261 267) no Hoare annotation was computed. [2021-11-23 02:25:35,007 INFO L854 garLoopResultBuilder]: At program point L902(lines 902 909) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 1)) [2021-11-23 02:25:35,007 INFO L861 garLoopResultBuilder]: At program point L902-2(lines 902 909) the Hoare annotation is: true [2021-11-23 02:25:35,008 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 95 119) the Hoare annotation is: (let ((.cse6 (= |old(~pumpRunning~0)| 0)) (.cse7 (= ~waterLevel~0 1))) (let ((.cse4 (not (= ~methAndRunningLastTime~0 0))) (.cse3 (not (= ~methaneLevelCritical~0 1))) (.cse8 (not .cse7)) (.cse0 (not .cse6)) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse5 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse1 .cse2 .cse5 .cse4) (or (not .cse1) .cse2 .cse6 .cse5 .cse7) (or .cse8 .cse0 .cse1 .cse2 .cse3) (or .cse8 .cse0 .cse1 .cse2 .cse5)))) [2021-11-23 02:25:35,008 INFO L854 garLoopResultBuilder]: At program point L114(line 114) the Hoare annotation is: (let ((.cse6 (= |old(~pumpRunning~0)| 0)) (.cse7 (= ~waterLevel~0 1))) (let ((.cse4 (not .cse7)) (.cse2 (not (= ~methaneLevelCritical~0 1))) (.cse0 (not .cse6)) (.cse3 (not (= ~methAndRunningLastTime~0 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse5 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse0 .cse1 .cse5) (or .cse4 .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse5 .cse3) (or (not (= ~pumpRunning~0 0)) .cse1 .cse6 .cse5 .cse7)))) [2021-11-23 02:25:35,008 INFO L858 garLoopResultBuilder]: For program point L114-1(lines 95 119) no Hoare annotation was computed. [2021-11-23 02:25:35,008 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 95 119) no Hoare annotation was computed. [2021-11-23 02:25:35,008 INFO L854 garLoopResultBuilder]: At program point L109(line 109) the Hoare annotation is: (let ((.cse9 (= ~waterLevel~0 1)) (.cse8 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse8)) (.cse3 (not (= ~methaneLevelCritical~0 1))) (.cse5 (not .cse9)) (.cse6 (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 0)) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse7 (not (= ~methaneLevelCritical~0 0))) (.cse4 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse0 .cse2 (and .cse1 .cse6) .cse3) (or .cse2 .cse7 (and .cse5 .cse8) (and .cse1 .cse6 .cse9)) (or .cse1 .cse2 .cse7 .cse4)))) [2021-11-23 02:25:35,009 INFO L854 garLoopResultBuilder]: At program point L103(lines 103 111) the Hoare annotation is: (let ((.cse9 (= ~waterLevel~0 1)) (.cse8 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse8)) (.cse3 (not (= ~methaneLevelCritical~0 1))) (.cse5 (not .cse9)) (.cse6 (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 0)) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse7 (not (= ~methaneLevelCritical~0 0))) (.cse4 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse0 .cse2 (and .cse1 .cse6) .cse3) (or .cse2 .cse7 (and .cse5 .cse8) (and .cse1 .cse6 .cse9)) (or .cse1 .cse2 .cse7 .cse4)))) [2021-11-23 02:25:35,009 INFO L854 garLoopResultBuilder]: At program point L99(lines 99 116) the Hoare annotation is: (let ((.cse6 (= |old(~pumpRunning~0)| 0)) (.cse7 (= ~waterLevel~0 1))) (let ((.cse4 (not (= ~methAndRunningLastTime~0 0))) (.cse3 (not (= ~methaneLevelCritical~0 1))) (.cse8 (not .cse7)) (.cse0 (not .cse6)) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse5 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse1 .cse2 .cse5 .cse4) (or (not .cse1) .cse2 .cse6 .cse5 .cse7) (or .cse8 .cse0 .cse1 .cse2 .cse3) (or .cse8 .cse0 .cse1 .cse2 .cse5)))) [2021-11-23 02:25:35,009 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 361 372) no Hoare annotation was computed. [2021-11-23 02:25:35,009 INFO L854 garLoopResultBuilder]: At program point waterRiseENTRY(lines 361 372) the Hoare annotation is: (let ((.cse5 (= ~waterLevel~0 1))) (let ((.cse0 (not .cse5)) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= |old(~waterLevel~0)| 1)) (.cse3 (not (= 1 ~systemActive~0))) (.cse4 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3 (not (= ~methaneLevelCritical~0 1))) (or .cse0 .cse1 .cse2 .cse3 .cse4) (or (not .cse1) (not .cse2) .cse3 .cse4 .cse5 (not (= ~methAndRunningLastTime~0 0)))))) [2021-11-23 02:25:35,013 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:35,014 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:25:35,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:25:35 BoogieIcfgContainer [2021-11-23 02:25:35,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:25:35,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:25:35,082 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:25:35,082 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:25:35,083 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:03" (3/4) ... [2021-11-23 02:25:35,087 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:25:35,094 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-11-23 02:25:35,094 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-11-23 02:25:35,094 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-11-23 02:25:35,094 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2021-11-23 02:25:35,094 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-11-23 02:25:35,095 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 02:25:35,095 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-11-23 02:25:35,108 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 71 nodes and edges [2021-11-23 02:25:35,109 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-11-23 02:25:35,110 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-23 02:25:35,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 02:25:35,112 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 02:25:35,113 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:25:35,113 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:25:35,153 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (((!(1 == systemActive) || !(methaneLevelCritical == 1)) || (1 == systemActive && (!(pumpRunning == 0) || waterLevel == 1))) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (1 == systemActive && (!(pumpRunning == 0) || waterLevel == 1))) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) [2021-11-23 02:25:35,156 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!(1 == systemActive) || (((pumpRunning == 0 && methaneLevelCritical == 0) && 1 == systemActive) && waterLevel == 1)) || !(methaneLevelCritical == 0)) || (!(pumpRunning == 0) && tmp == methaneLevelCritical)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (!(waterLevel == 1) && methAndRunningLastTime == 0))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1))) && ((((!(1 == systemActive) || ((pumpRunning == 0 && 1 == systemActive) && tmp == methaneLevelCritical)) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (!(waterLevel == 1) && methAndRunningLastTime == 0)) || !(methaneLevelCritical == 1)) || (pumpRunning == 0 && 1 == systemActive))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (((pumpRunning == 0 && methaneLevelCritical == 0) && 1 == systemActive) && waterLevel == 1)) || !(methaneLevelCritical == 0))) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) [2021-11-23 02:25:35,156 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || !(methAndRunningLastTime == 0)) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0))) && ((((!(pumpRunning == 0) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || waterLevel == 1)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) [2021-11-23 02:25:35,159 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (pumpRunning == 0 && waterLevel == 1)) || ((!(pumpRunning == 0) && tmp == 0) && tmp == methaneLevelCritical)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (methAndRunningLastTime == 0 && tmp == 0))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1))) && (((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (pumpRunning == 0 && 1 == systemActive))) && ((((!(1 == systemActive) || ((pumpRunning == 0 && 1 == systemActive) && tmp == methaneLevelCritical)) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (!(waterLevel == 1) && methAndRunningLastTime == 0)) || !(methaneLevelCritical == 1)) || (pumpRunning == 0 && 1 == systemActive))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || waterLevel == 1) [2021-11-23 02:25:35,159 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) && (((!(1 == systemActive) || ((!(pumpRunning == 0) || waterLevel == 1) && aux-isMethaneLevelCritical()-aux == 1)) || !(methaneLevelCritical == 1)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (aux-isMethaneLevelCritical()-aux == methaneLevelCritical && (!(pumpRunning == 0) || waterLevel == 1))) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) [2021-11-23 02:25:35,159 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive) && (!(pumpRunning == 0) || waterLevel == 1)) && tmp == methaneLevelCritical) || !(1 == systemActive)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && waterLevel == 1)) || !(methaneLevelCritical == 0)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) && ((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || (!(waterLevel == 1) && !(pumpRunning == 0))) || (pumpRunning == 0 && methAndRunningLastTime == 0))) && (((((((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && methaneLevelCritical == 1) && waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && ((((((((((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive) && (!(pumpRunning == 0) || waterLevel == 1)) && tmp == methaneLevelCritical) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((!(waterLevel == 1) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || waterLevel == 1)) && ((((((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && methaneLevelCritical == 1) && waterLevel == 1) || !(1 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical)) || !(methaneLevelCritical == 1)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((!(waterLevel == 1) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive)) [2021-11-23 02:25:35,161 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || ((!(pumpRunning == 0) || waterLevel == 1) && tmp == methaneLevelCritical)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (((!(1 == systemActive) || !(methaneLevelCritical == 1)) || ((!(pumpRunning == 0) || waterLevel == 1) && tmp == methaneLevelCritical)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) [2021-11-23 02:25:35,161 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) && ((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && ((!(1 == systemActive) || !(methaneLevelCritical == 1)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) [2021-11-23 02:25:35,162 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || !(methAndRunningLastTime == 0)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) || !(methaneLevelCritical == 1))) && (((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (!(waterLevel == 1) && \old(pumpRunning) == 0)) || ((pumpRunning == 0 && tmp == 0) && waterLevel == 1))) && (((pumpRunning == 0 || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) [2021-11-23 02:25:35,221 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:25:35,222 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:25:35,223 INFO L158 Benchmark]: Toolchain (without parser) took 34017.12ms. Allocated memory was 111.1MB in the beginning and 302.0MB in the end (delta: 190.8MB). Free memory was 68.9MB in the beginning and 241.8MB in the end (delta: -172.9MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,223 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 111.1MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:25:35,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 696.67ms. Allocated memory is still 111.1MB. Free memory was 68.7MB in the beginning and 78.2MB in the end (delta: -9.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.77ms. Allocated memory is still 111.1MB. Free memory was 78.2MB in the beginning and 75.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,225 INFO L158 Benchmark]: Boogie Preprocessor took 94.57ms. Allocated memory is still 111.1MB. Free memory was 75.8MB in the beginning and 74.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,225 INFO L158 Benchmark]: RCFGBuilder took 937.43ms. Allocated memory is still 111.1MB. Free memory was 74.2MB in the beginning and 53.6MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,227 INFO L158 Benchmark]: TraceAbstraction took 32042.44ms. Allocated memory was 111.1MB in the beginning and 302.0MB in the end (delta: 190.8MB). Free memory was 52.8MB in the beginning and 249.1MB in the end (delta: -196.3MB). Peak memory consumption was 154.2MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,228 INFO L158 Benchmark]: Witness Printer took 139.94ms. Allocated memory is still 302.0MB. Free memory was 248.1MB in the beginning and 241.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 111.1MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 696.67ms. Allocated memory is still 111.1MB. Free memory was 68.7MB in the beginning and 78.2MB in the end (delta: -9.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.77ms. Allocated memory is still 111.1MB. Free memory was 78.2MB in the beginning and 75.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.57ms. Allocated memory is still 111.1MB. Free memory was 75.8MB in the beginning and 74.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 937.43ms. Allocated memory is still 111.1MB. Free memory was 74.2MB in the beginning and 53.6MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 32042.44ms. Allocated memory was 111.1MB in the beginning and 302.0MB in the end (delta: 190.8MB). Free memory was 52.8MB in the beginning and 249.1MB in the end (delta: -196.3MB). Peak memory consumption was 154.2MB. Max. memory is 16.1GB. * Witness Printer took 139.94ms. Allocated memory is still 302.0MB. Free memory was 248.1MB in the beginning and 241.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 445]: 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: 31.9s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 744 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 728 mSDsluCounter, 1518 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1224 mSDsCounter, 209 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1756 IncrementalHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 209 mSolverCounterUnsat, 566 mSDtfsCounter, 1756 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 276 SyntacticMatches, 7 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=595occurred in iteration=9, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 104 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 1217 PreInvPairs, 1445 NumberOfFragments, 2516 HoareAnnotationTreeSize, 1217 FomulaSimplifications, 332 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 34 FomulaSimplificationsInter, 15784 FormulaSimplificationTreeSizeReductionInter, 5.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 540 NumberOfCodeBlocks, 540 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 594 ConstructedInterpolants, 0 QuantifiedInterpolants, 1572 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1216 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 128/168 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: 99]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || !(methAndRunningLastTime == 0)) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0))) && ((((!(pumpRunning == 0) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || waterLevel == 1)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: ((((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || ((!(pumpRunning == 0) || waterLevel == 1) && tmp == methaneLevelCritical)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (((!(1 == systemActive) || !(methaneLevelCritical == 1)) || ((!(pumpRunning == 0) || waterLevel == 1) && tmp == methaneLevelCritical)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || !(methAndRunningLastTime == 0)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) || !(methaneLevelCritical == 1))) && (((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (!(waterLevel == 1) && \old(pumpRunning) == 0)) || ((pumpRunning == 0 && tmp == 0) && waterLevel == 1))) && (((pumpRunning == 0 || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: (((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (((!(1 == systemActive) || !(methaneLevelCritical == 1)) || (1 == systemActive && (!(pumpRunning == 0) || waterLevel == 1))) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (1 == systemActive && (!(pumpRunning == 0) || waterLevel == 1))) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) && (((!(1 == systemActive) || ((!(pumpRunning == 0) || waterLevel == 1) && aux-isMethaneLevelCritical()-aux == 1)) || !(methaneLevelCritical == 1)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (aux-isMethaneLevelCritical()-aux == methaneLevelCritical && (!(pumpRunning == 0) || waterLevel == 1))) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 902]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 827]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 817]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: (((((((((!(1 == systemActive) || (((pumpRunning == 0 && methaneLevelCritical == 0) && 1 == systemActive) && waterLevel == 1)) || !(methaneLevelCritical == 0)) || (!(pumpRunning == 0) && tmp == methaneLevelCritical)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (!(waterLevel == 1) && methAndRunningLastTime == 0))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1))) && ((((!(1 == systemActive) || ((pumpRunning == 0 && 1 == systemActive) && tmp == methaneLevelCritical)) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (!(waterLevel == 1) && methAndRunningLastTime == 0)) || !(methaneLevelCritical == 1)) || (pumpRunning == 0 && 1 == systemActive))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (((pumpRunning == 0 && methaneLevelCritical == 0) && 1 == systemActive) && waterLevel == 1)) || !(methaneLevelCritical == 0))) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 251]: Loop Invariant Derived loop invariant: ((((((!(waterLevel == 1) && !(pumpRunning == 0)) && 1 == systemActive) && methaneLevelCritical == 1) && splverifierCounter == 0) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && methaneLevelCritical == 1) && splverifierCounter == 0)) || ((((!(waterLevel == 1) && !(pumpRunning == 0)) && methaneLevelCritical == 0) && 1 == systemActive) && splverifierCounter == 0)) || (((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && 1 == systemActive) && splverifierCounter == 0) - InvariantResult [Line: 902]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && 1 == systemActive) && waterLevel == 1 - InvariantResult [Line: 316]: Loop Invariant Derived loop invariant: ((((((((((((((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive) && (!(pumpRunning == 0) || waterLevel == 1)) && tmp == methaneLevelCritical) || !(1 == systemActive)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && waterLevel == 1)) || !(methaneLevelCritical == 0)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) && ((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || (!(waterLevel == 1) && !(pumpRunning == 0))) || (pumpRunning == 0 && methAndRunningLastTime == 0))) && (((((((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && methaneLevelCritical == 1) && waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && ((((((((((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive) && (!(pumpRunning == 0) || waterLevel == 1)) && tmp == methaneLevelCritical) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((!(waterLevel == 1) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || waterLevel == 1)) && ((((((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && methaneLevelCritical == 1) && waterLevel == 1) || !(1 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical)) || !(methaneLevelCritical == 1)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((!(waterLevel == 1) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 0) && 1 == systemActive)) - InvariantResult [Line: 445]: Loop Invariant Derived loop invariant: ((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) && ((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && ((!(1 == systemActive) || !(methaneLevelCritical == 1)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) - InvariantResult [Line: 250]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 241]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 324]: Loop Invariant Derived loop invariant: (((((((((!(1 == systemActive) || !(methaneLevelCritical == 0)) || (pumpRunning == 0 && waterLevel == 1)) || ((!(pumpRunning == 0) && tmp == 0) && tmp == methaneLevelCritical)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0)) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (methAndRunningLastTime == 0 && tmp == 0))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1))) && (((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (pumpRunning == 0 && 1 == systemActive))) && ((((!(1 == systemActive) || ((pumpRunning == 0 && 1 == systemActive) && tmp == methaneLevelCritical)) || (pumpRunning == 0 && waterLevel == 1)) || !(methaneLevelCritical == 1)) || (!(\old(waterLevel) == 1) && \old(pumpRunning) == 0))) && ((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (!(waterLevel == 1) && methAndRunningLastTime == 0)) || !(methaneLevelCritical == 1)) || (pumpRunning == 0 && 1 == systemActive))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || waterLevel == 1) RESULT: Ultimate proved your program to be correct! [2021-11-23 02:25:35,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc0d498-a089-4474-8565-70224e267dba/bin/utaipan-EQgc7hIp5V/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