./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product39.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_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/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_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product39.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/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_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/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 faabc130c8aadbb7390121b68f1c41e161e50da9443e348cb1c3db1c45e9e0cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:29:33,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:29:33,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:29:33,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:29:33,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:29:33,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:29:33,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:29:33,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:29:33,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:29:33,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:29:33,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:29:33,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:29:33,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:29:33,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:29:33,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:29:33,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:29:33,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:29:33,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:29:33,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:29:33,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:29:33,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:29:33,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:29:33,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:29:33,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:29:33,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:29:33,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:29:33,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:29:33,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:29:33,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:29:33,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:29:33,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:29:33,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:29:33,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:29:33,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:29:33,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:29:33,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:29:33,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:29:33,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:29:33,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:29:33,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:29:33,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:29:33,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:29:33,242 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:29:33,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:29:33,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:29:33,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:29:33,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:29:33,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:29:33,246 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:29:33,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:29:33,247 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:29:33,247 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:29:33,249 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:29:33,249 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:29:33,250 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:29:33,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:29:33,250 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:29:33,251 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:29:33,251 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:29:33,251 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:29:33,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:29:33,253 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:29:33,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:29:33,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:29:33,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:29:33,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:29:33,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:29:33,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:29:33,257 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:29:33,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:29:33,257 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:29:33,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:29:33,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:29:33,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:29:33,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:29:33,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:29:33,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:29:33,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:29:33,260 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:29:33,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:29:33,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:29:33,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:29:33,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:29:33,262 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_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faabc130c8aadbb7390121b68f1c41e161e50da9443e348cb1c3db1c45e9e0cb [2021-11-23 03:29:33,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:29:33,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:29:33,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:29:33,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:29:33,664 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:29:33,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec2_product39.cil.c [2021-11-23 03:29:33,769 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/data/c93987889/c9685d5091914b6491f245e32e7486c6/FLAG882318ce7 [2021-11-23 03:29:34,559 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:29:34,571 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/sv-benchmarks/c/product-lines/minepump_spec2_product39.cil.c [2021-11-23 03:29:34,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/data/c93987889/c9685d5091914b6491f245e32e7486c6/FLAG882318ce7 [2021-11-23 03:29:34,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/data/c93987889/c9685d5091914b6491f245e32e7486c6 [2021-11-23 03:29:34,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:29:34,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:29:34,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:29:34,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:29:34,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:29:34,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:34" (1/1) ... [2021-11-23 03:29:34,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7c2a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:34, skipping insertion in model container [2021-11-23 03:29:34,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:34" (1/1) ... [2021-11-23 03:29:34,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:29:34,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:29:35,170 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_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/sv-benchmarks/c/product-lines/minepump_spec2_product39.cil.c[5087,5100] [2021-11-23 03:29:35,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:29:35,300 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:29:35,351 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_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/sv-benchmarks/c/product-lines/minepump_spec2_product39.cil.c[5087,5100] [2021-11-23 03:29:35,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:29:35,461 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:29:35,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35 WrapperNode [2021-11-23 03:29:35,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:29:35,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:29:35,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:29:35,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:29:35,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35" (1/1) ... [2021-11-23 03:29:35,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35" (1/1) ... [2021-11-23 03:29:35,537 INFO L137 Inliner]: procedures = 55, calls = 156, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 250 [2021-11-23 03:29:35,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:29:35,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:29:35,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:29:35,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:29:35,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35" (1/1) ... [2021-11-23 03:29:35,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35" (1/1) ... [2021-11-23 03:29:35,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35" (1/1) ... [2021-11-23 03:29:35,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35" (1/1) ... [2021-11-23 03:29:35,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35" (1/1) ... [2021-11-23 03:29:35,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35" (1/1) ... [2021-11-23 03:29:35,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35" (1/1) ... [2021-11-23 03:29:35,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:29:35,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:29:35,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:29:35,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:29:35,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35" (1/1) ... [2021-11-23 03:29:35,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:29:35,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:29:35,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:29:35,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:29:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:29:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 03:29:35,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 03:29:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 03:29:35,717 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 03:29:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 03:29:35,717 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 03:29:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 03:29:35,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 03:29:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:29:35,718 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:29:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 03:29:35,718 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 03:29:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-23 03:29:35,718 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-23 03:29:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:29:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 03:29:35,719 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 03:29:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:29:35,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:29:35,815 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:29:35,818 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:29:36,287 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:29:36,407 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:29:36,408 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:29:36,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:36 BoogieIcfgContainer [2021-11-23 03:29:36,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:29:36,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:29:36,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:29:36,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:29:36,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:29:34" (1/3) ... [2021-11-23 03:29:36,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509d132c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:36, skipping insertion in model container [2021-11-23 03:29:36,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:35" (2/3) ... [2021-11-23 03:29:36,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509d132c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:36, skipping insertion in model container [2021-11-23 03:29:36,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:36" (3/3) ... [2021-11-23 03:29:36,433 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2021-11-23 03:29:36,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:29:36,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:29:36,524 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:29:36,533 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 03:29:36,533 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:29:36,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 51 states have internal predecessors, (61), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 03:29:36,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:29:36,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:36,568 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 03:29:36,568 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:36,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash -671904148, now seen corresponding path program 1 times [2021-11-23 03:29:36,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:36,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859266730] [2021-11-23 03:29:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:36,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:36,866 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 03:29:36,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:36,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859266730] [2021-11-23 03:29:36,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859266730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:36,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:36,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:29:36,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738579744] [2021-11-23 03:29:36,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:36,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:29:36,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:36,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:29:36,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:29:36,919 INFO L87 Difference]: Start difference. First operand has 66 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 51 states have internal predecessors, (61), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) 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 03:29:37,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:37,019 INFO L93 Difference]: Finished difference Result 130 states and 179 transitions. [2021-11-23 03:29:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:29:37,023 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 03:29:37,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:37,037 INFO L225 Difference]: With dead ends: 130 [2021-11-23 03:29:37,037 INFO L226 Difference]: Without dead ends: 61 [2021-11-23 03:29:37,043 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 03:29:37,048 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:37,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:29:37,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-23 03:29:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-23 03:29:37,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.358974358974359) internal successors, (53), 47 states have internal predecessors, (53), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 03:29:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2021-11-23 03:29:37,121 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 17 [2021-11-23 03:29:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:37,123 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2021-11-23 03:29:37,125 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 03:29:37,125 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2021-11-23 03:29:37,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:29:37,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:37,132 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 03:29:37,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:29:37,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash -600656771, now seen corresponding path program 1 times [2021-11-23 03:29:37,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:37,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241804524] [2021-11-23 03:29:37,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:37,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:37,321 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 03:29:37,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:37,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241804524] [2021-11-23 03:29:37,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241804524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:37,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:37,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:29:37,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034998213] [2021-11-23 03:29:37,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:37,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:29:37,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:29:37,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:29:37,326 INFO L87 Difference]: Start difference. First operand 61 states and 80 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 03:29:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:37,438 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2021-11-23 03:29:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:29:37,439 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 03:29:37,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:37,440 INFO L225 Difference]: With dead ends: 94 [2021-11-23 03:29:37,441 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 03:29:37,442 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 03:29:37,444 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 14 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:37,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 93 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:29:37,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 03:29:37,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-23 03:29:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 42 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 03:29:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2021-11-23 03:29:37,468 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 18 [2021-11-23 03:29:37,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:37,468 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2021-11-23 03:29:37,468 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 03:29:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2021-11-23 03:29:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 03:29:37,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:37,471 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] [2021-11-23 03:29:37,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:29:37,471 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:37,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2082322244, now seen corresponding path program 1 times [2021-11-23 03:29:37,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:37,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312790728] [2021-11-23 03:29:37,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:37,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:37,600 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 03:29:37,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:37,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312790728] [2021-11-23 03:29:37,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312790728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:37,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:37,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:29:37,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891781565] [2021-11-23 03:29:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:37,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:29:37,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:29:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:29:37,608 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 03:29:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:37,765 INFO L93 Difference]: Finished difference Result 155 states and 204 transitions. [2021-11-23 03:29:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:29:37,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 21 [2021-11-23 03:29:37,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:37,769 INFO L225 Difference]: With dead ends: 155 [2021-11-23 03:29:37,769 INFO L226 Difference]: Without dead ends: 104 [2021-11-23 03:29:37,771 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 03:29:37,773 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 56 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:37,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 127 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:29:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-23 03:29:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2021-11-23 03:29:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 64 states have (on average 1.390625) internal successors, (89), 79 states have internal predecessors, (89), 22 states have call successors, (22), 14 states have call predecessors, (22), 14 states have return successors, (22), 15 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 03:29:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2021-11-23 03:29:37,809 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 21 [2021-11-23 03:29:37,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:37,810 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2021-11-23 03:29:37,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 03:29:37,810 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2021-11-23 03:29:37,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 03:29:37,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:37,813 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] [2021-11-23 03:29:37,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:29:37,814 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:37,815 INFO L85 PathProgramCache]: Analyzing trace with hash 654606365, now seen corresponding path program 1 times [2021-11-23 03:29:37,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:37,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829520761] [2021-11-23 03:29:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:37,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:38,029 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 03:29:38,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:38,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829520761] [2021-11-23 03:29:38,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829520761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:38,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:38,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:29:38,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595511638] [2021-11-23 03:29:38,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:38,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:29:38,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:38,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:29:38,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:29:38,033 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:29:38,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:38,279 INFO L93 Difference]: Finished difference Result 295 states and 392 transitions. [2021-11-23 03:29:38,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:29:38,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-23 03:29:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:38,287 INFO L225 Difference]: With dead ends: 295 [2021-11-23 03:29:38,288 INFO L226 Difference]: Without dead ends: 196 [2021-11-23 03:29:38,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:29:38,292 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 44 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:38,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 283 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:29:38,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-23 03:29:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2021-11-23 03:29:38,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 119 states have (on average 1.3697478991596639) internal successors, (163), 146 states have internal predecessors, (163), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 28 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-23 03:29:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 247 transitions. [2021-11-23 03:29:38,383 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 247 transitions. Word has length 24 [2021-11-23 03:29:38,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:38,384 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 247 transitions. [2021-11-23 03:29:38,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:29:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 247 transitions. [2021-11-23 03:29:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:29:38,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:38,388 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] [2021-11-23 03:29:38,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:29:38,389 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:38,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1192430897, now seen corresponding path program 1 times [2021-11-23 03:29:38,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:38,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845450672] [2021-11-23 03:29:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:38,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:38,484 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 03:29:38,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:38,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845450672] [2021-11-23 03:29:38,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845450672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:38,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:38,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:29:38,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882817620] [2021-11-23 03:29:38,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:38,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:29:38,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:38,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:29:38,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:29:38,494 INFO L87 Difference]: Start difference. First operand 188 states and 247 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:29:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:38,656 INFO L93 Difference]: Finished difference Result 287 states and 382 transitions. [2021-11-23 03:29:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:29:38,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-11-23 03:29:38,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:38,664 INFO L225 Difference]: With dead ends: 287 [2021-11-23 03:29:38,664 INFO L226 Difference]: Without dead ends: 285 [2021-11-23 03:29:38,665 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 03:29:38,669 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 44 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 117 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 03:29:38,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 117 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:29:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-23 03:29:38,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-11-23 03:29:38,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 180 states have (on average 1.3722222222222222) internal successors, (247), 221 states have internal predecessors, (247), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (68), 43 states have call predecessors, (68), 64 states have call successors, (68) [2021-11-23 03:29:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 379 transitions. [2021-11-23 03:29:38,769 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 379 transitions. Word has length 27 [2021-11-23 03:29:38,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:38,771 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 379 transitions. [2021-11-23 03:29:38,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:29:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 379 transitions. [2021-11-23 03:29:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 03:29:38,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:38,785 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:29:38,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:29:38,786 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash -342758768, now seen corresponding path program 1 times [2021-11-23 03:29:38,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:38,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795974535] [2021-11-23 03:29:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:38,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:29:38,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:38,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795974535] [2021-11-23 03:29:38,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795974535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:38,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:38,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:29:38,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882556142] [2021-11-23 03:29:38,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:38,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:29:38,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:38,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:29:38,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:29:38,978 INFO L87 Difference]: Start difference. First operand 285 states and 379 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:29:39,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:39,365 INFO L93 Difference]: Finished difference Result 934 states and 1260 transitions. [2021-11-23 03:29:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:29:39,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2021-11-23 03:29:39,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:39,376 INFO L225 Difference]: With dead ends: 934 [2021-11-23 03:29:39,377 INFO L226 Difference]: Without dead ends: 651 [2021-11-23 03:29:39,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:29:39,384 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 129 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:39,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 182 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:29:39,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-11-23 03:29:39,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 604. [2021-11-23 03:29:39,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 406 states have (on average 1.2635467980295567) internal successors, (513), 445 states have internal predecessors, (513), 98 states have call successors, (98), 83 states have call predecessors, (98), 99 states have return successors, (144), 99 states have call predecessors, (144), 98 states have call successors, (144) [2021-11-23 03:29:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 755 transitions. [2021-11-23 03:29:39,496 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 755 transitions. Word has length 47 [2021-11-23 03:29:39,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:39,496 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 755 transitions. [2021-11-23 03:29:39,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:29:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 755 transitions. [2021-11-23 03:29:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 03:29:39,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:39,504 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:29:39,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:29:39,505 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:39,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:39,506 INFO L85 PathProgramCache]: Analyzing trace with hash -148294688, now seen corresponding path program 1 times [2021-11-23 03:29:39,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:39,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864027559] [2021-11-23 03:29:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:39,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:29:39,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:39,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864027559] [2021-11-23 03:29:39,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864027559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:39,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:39,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:29:39,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565850098] [2021-11-23 03:29:39,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:39,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:29:39,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:29:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:29:39,620 INFO L87 Difference]: Start difference. First operand 604 states and 755 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 03:29:39,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:39,798 INFO L93 Difference]: Finished difference Result 683 states and 857 transitions. [2021-11-23 03:29:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:29:39,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 55 [2021-11-23 03:29:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:39,805 INFO L225 Difference]: With dead ends: 683 [2021-11-23 03:29:39,805 INFO L226 Difference]: Without dead ends: 292 [2021-11-23 03:29:39,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:29:39,819 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 87 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:39,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 124 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:29:39,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-23 03:29:39,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-11-23 03:29:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 197 states have (on average 1.218274111675127) internal successors, (240), 214 states have internal predecessors, (240), 46 states have call successors, (46), 40 states have call predecessors, (46), 48 states have return successors, (69), 48 states have call predecessors, (69), 46 states have call successors, (69) [2021-11-23 03:29:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 355 transitions. [2021-11-23 03:29:39,876 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 355 transitions. Word has length 55 [2021-11-23 03:29:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:39,877 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 355 transitions. [2021-11-23 03:29:39,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 03:29:39,877 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 355 transitions. [2021-11-23 03:29:39,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 03:29:39,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:39,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:29:39,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:29:39,882 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:39,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:39,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1388846503, now seen corresponding path program 1 times [2021-11-23 03:29:39,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:39,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107930711] [2021-11-23 03:29:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:39,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 03:29:40,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:40,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107930711] [2021-11-23 03:29:40,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107930711] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:29:40,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816962876] [2021-11-23 03:29:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:40,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:29:40,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:29:40,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:29:40,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:29:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:40,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:29:40,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:29:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:29:40,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:29:40,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816962876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:40,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:29:40,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-23 03:29:40,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877795002] [2021-11-23 03:29:40,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:40,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:29:40,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:40,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:29:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:29:40,468 INFO L87 Difference]: Start difference. First operand 292 states and 355 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-23 03:29:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:40,552 INFO L93 Difference]: Finished difference Result 584 states and 709 transitions. [2021-11-23 03:29:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:29:40,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 60 [2021-11-23 03:29:40,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:40,556 INFO L225 Difference]: With dead ends: 584 [2021-11-23 03:29:40,556 INFO L226 Difference]: Without dead ends: 294 [2021-11-23 03:29:40,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:29:40,562 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 28 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:40,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 108 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:29:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-23 03:29:40,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2021-11-23 03:29:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 197 states have (on average 1.2030456852791878) internal successors, (237), 214 states have internal predecessors, (237), 46 states have call successors, (46), 40 states have call predecessors, (46), 48 states have return successors, (61), 48 states have call predecessors, (61), 46 states have call successors, (61) [2021-11-23 03:29:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 344 transitions. [2021-11-23 03:29:40,617 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 344 transitions. Word has length 60 [2021-11-23 03:29:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:40,618 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 344 transitions. [2021-11-23 03:29:40,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-23 03:29:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 344 transitions. [2021-11-23 03:29:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 03:29:40,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:40,624 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] [2021-11-23 03:29:40,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:29:40,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:29:40,852 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1650289391, now seen corresponding path program 1 times [2021-11-23 03:29:40,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:40,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889183450] [2021-11-23 03:29:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:40,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:29:41,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:41,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889183450] [2021-11-23 03:29:41,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889183450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:41,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:41,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:29:41,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522366705] [2021-11-23 03:29:41,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:41,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:29:41,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:29:41,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:29:41,069 INFO L87 Difference]: Start difference. First operand 292 states and 344 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-23 03:29:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:41,510 INFO L93 Difference]: Finished difference Result 713 states and 861 transitions. [2021-11-23 03:29:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:29:41,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 62 [2021-11-23 03:29:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:41,515 INFO L225 Difference]: With dead ends: 713 [2021-11-23 03:29:41,515 INFO L226 Difference]: Without dead ends: 423 [2021-11-23 03:29:41,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:29:41,520 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 153 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:41,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 163 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:29:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-11-23 03:29:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 356. [2021-11-23 03:29:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 243 states have (on average 1.1934156378600822) internal successors, (290), 261 states have internal predecessors, (290), 55 states have call successors, (55), 49 states have call predecessors, (55), 57 states have return successors, (70), 57 states have call predecessors, (70), 55 states have call successors, (70) [2021-11-23 03:29:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 415 transitions. [2021-11-23 03:29:41,576 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 415 transitions. Word has length 62 [2021-11-23 03:29:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:41,577 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 415 transitions. [2021-11-23 03:29:41,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-23 03:29:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 415 transitions. [2021-11-23 03:29:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 03:29:41,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:41,580 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:29:41,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:29:41,581 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:41,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:41,582 INFO L85 PathProgramCache]: Analyzing trace with hash 630319736, now seen corresponding path program 1 times [2021-11-23 03:29:41,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:41,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474037448] [2021-11-23 03:29:41,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:41,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 03:29:41,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:41,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474037448] [2021-11-23 03:29:41,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474037448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:41,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:41,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:29:41,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586244457] [2021-11-23 03:29:41,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:41,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:29:41,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:41,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:29:41,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:29:41,694 INFO L87 Difference]: Start difference. First operand 356 states and 415 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:29:41,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:41,795 INFO L93 Difference]: Finished difference Result 522 states and 614 transitions. [2021-11-23 03:29:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:29:41,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2021-11-23 03:29:41,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:41,799 INFO L225 Difference]: With dead ends: 522 [2021-11-23 03:29:41,799 INFO L226 Difference]: Without dead ends: 321 [2021-11-23 03:29:41,801 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 03:29:41,801 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 40 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:41,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 166 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:29:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-23 03:29:41,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 308. [2021-11-23 03:29:41,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 209 states have (on average 1.1722488038277512) internal successors, (245), 225 states have internal predecessors, (245), 48 states have call successors, (48), 43 states have call predecessors, (48), 50 states have return successors, (58), 49 states have call predecessors, (58), 48 states have call successors, (58) [2021-11-23 03:29:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 351 transitions. [2021-11-23 03:29:41,840 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 351 transitions. Word has length 65 [2021-11-23 03:29:41,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:41,840 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 351 transitions. [2021-11-23 03:29:41,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:29:41,841 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 351 transitions. [2021-11-23 03:29:41,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 03:29:41,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:41,843 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:29:41,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:29:41,844 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:41,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:41,844 INFO L85 PathProgramCache]: Analyzing trace with hash 353583973, now seen corresponding path program 1 times [2021-11-23 03:29:41,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:41,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39697783] [2021-11-23 03:29:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:41,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:29:41,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:41,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39697783] [2021-11-23 03:29:41,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39697783] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:29:41,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111256453] [2021-11-23 03:29:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:41,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:29:41,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:29:41,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:29:41,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:29:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:42,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-23 03:29:42,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:29:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:29:42,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:29:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:29:43,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111256453] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:29:43,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1623707118] [2021-11-23 03:29:43,251 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2021-11-23 03:29:43,252 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:29:43,257 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:29:43,264 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:29:43,265 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:30:03,052 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 310 for LOIs [2021-11-23 03:30:03,150 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 47 for LOIs [2021-11-23 03:30:03,510 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 40 for LOIs [2021-11-23 03:30:03,643 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 23 for LOIs [2021-11-23 03:30:03,647 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 32 for LOIs [2021-11-23 03:30:03,653 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 38 for LOIs [2021-11-23 03:30:03,657 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:30:13,115 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11142#(and (<= ~cleanupTimeShifts~0 4) (<= ~head~0.offset 0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~5#1|) (<= 0 |#NULL.base|) (<= 0 ~head~0.offset) (<= 1 ~systemActive~0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~5#1|) (<= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (<= 0 ~methAndRunningLastTime~0) (<= 4 ~cleanupTimeShifts~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= 0 ~head~0.base) (<= |#NULL.base| 0) (<= 0 ~methaneLevelCritical~0) (<= ~head~0.base 0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 1) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (<= 0 |#NULL.offset|) (not (= ~methAndRunningLastTime~0 0)) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| ~methaneLevelCritical~0) (<= ~systemActive~0 1))' at error location [2021-11-23 03:30:13,115 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:30:13,115 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:30:13,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 23 [2021-11-23 03:30:13,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158921795] [2021-11-23 03:30:13,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:30:13,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 03:30:13,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:30:13,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 03:30:13,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2474, Unknown=0, NotChecked=0, Total=2756 [2021-11-23 03:30:13,121 INFO L87 Difference]: Start difference. First operand 308 states and 351 transitions. Second operand has 23 states, 17 states have (on average 6.470588235294118) internal successors, (110), 18 states have internal predecessors, (110), 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 03:30:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:30:14,026 INFO L93 Difference]: Finished difference Result 612 states and 707 transitions. [2021-11-23 03:30:14,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:30:14,028 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 6.470588235294118) internal successors, (110), 18 states have internal predecessors, (110), 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 70 [2021-11-23 03:30:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:30:14,032 INFO L225 Difference]: With dead ends: 612 [2021-11-23 03:30:14,032 INFO L226 Difference]: Without dead ends: 459 [2021-11-23 03:30:14,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 159 SyntacticMatches, 11 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=395, Invalid=3387, Unknown=0, NotChecked=0, Total=3782 [2021-11-23 03:30:14,035 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 293 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:30:14,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 320 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 03:30:14,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-23 03:30:14,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2021-11-23 03:30:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 311 states have (on average 1.1736334405144695) internal successors, (365), 336 states have internal predecessors, (365), 72 states have call successors, (72), 66 states have call predecessors, (72), 75 states have return successors, (85), 73 states have call predecessors, (85), 72 states have call successors, (85) [2021-11-23 03:30:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 522 transitions. [2021-11-23 03:30:14,076 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 522 transitions. Word has length 70 [2021-11-23 03:30:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:30:14,076 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 522 transitions. [2021-11-23 03:30:14,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 6.470588235294118) internal successors, (110), 18 states have internal predecessors, (110), 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 03:30:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 522 transitions. [2021-11-23 03:30:14,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 03:30:14,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:30:14,080 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, 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 03:30:14,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:30:14,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 03:30:14,295 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:30:14,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:30:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash 961164993, now seen corresponding path program 1 times [2021-11-23 03:30:14,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:30:14,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308877400] [2021-11-23 03:30:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:30:14,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:30:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:30:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 03:30:14,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:30:14,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308877400] [2021-11-23 03:30:14,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308877400] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:30:14,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061310526] [2021-11-23 03:30:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:30:14,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:30:14,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:30:14,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:30:14,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:30:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:30:14,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 03:30:14,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:30:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-23 03:30:14,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:30:14,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061310526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:30:14,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:30:14,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 16 [2021-11-23 03:30:14,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297016124] [2021-11-23 03:30:14,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:30:14,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:30:14,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:30:14,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:30:14,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:30:14,815 INFO L87 Difference]: Start difference. First operand 459 states and 522 transitions. Second operand has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 03:30:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:30:15,112 INFO L93 Difference]: Finished difference Result 844 states and 972 transitions. [2021-11-23 03:30:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 03:30:15,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 73 [2021-11-23 03:30:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:30:15,114 INFO L225 Difference]: With dead ends: 844 [2021-11-23 03:30:15,114 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:30:15,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 76 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 03:30:15,117 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 46 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:30:15,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 313 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:30:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:30:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:30:15,119 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 03:30:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:30:15,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2021-11-23 03:30:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:30:15,120 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:30:15,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 03:30:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:30:15,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:30:15,124 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:30:15,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:30:15,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:30:15,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:30:20,187 INFO L854 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 469 476) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 0 ~systemActive~0)) [2021-11-23 03:30:20,187 INFO L858 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 469 476) no Hoare annotation was computed. [2021-11-23 03:30:20,187 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 402 408) no Hoare annotation was computed. [2021-11-23 03:30:20,187 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 402 408) the Hoare annotation is: true [2021-11-23 03:30:20,188 INFO L854 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 83 94) the Hoare annotation is: (let ((.cse1 (not (= ~pumpRunning~0 0))) (.cse6 (= ~methaneLevelCritical~0 1)) (.cse7 (not (= |old(~methaneLevelCritical~0)| 1))) (.cse4 (not (= ~methAndRunningLastTime~0 0))) (.cse0 (not (= |old(~methaneLevelCritical~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0)) (.cse5 (not (<= 1 ~pumpRunning~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse2 .cse5 .cse6 .cse7) (or .cse1 .cse2 .cse6 .cse7 .cse4) (or .cse0 .cse2 .cse3 .cse5))) [2021-11-23 03:30:20,188 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 83 94) no Hoare annotation was computed. [2021-11-23 03:30:20,188 INFO L858 garLoopResultBuilder]: For program point L382-1(lines 381 400) no Hoare annotation was computed. [2021-11-23 03:30:20,188 INFO L858 garLoopResultBuilder]: For program point L444(lines 444 452) no Hoare annotation was computed. [2021-11-23 03:30:20,188 INFO L858 garLoopResultBuilder]: For program point L440(lines 440 457) no Hoare annotation was computed. [2021-11-23 03:30:20,188 INFO L858 garLoopResultBuilder]: For program point L279(lines 279 285) no Hoare annotation was computed. [2021-11-23 03:30:20,188 INFO L854 garLoopResultBuilder]: At program point L300(line 300) the Hoare annotation is: (let ((.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse1 (not (<= 1 |old(~pumpRunning~0)|))) (.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse5 (not (= ~methaneLevelCritical~0 1))) (.cse3 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 .cse0 .cse2) (or .cse0 .cse1 .cse5) (or .cse3 .cse4 .cse0 .cse5) (or .cse3 (not (= 0 ~systemActive~0))))) [2021-11-23 03:30:20,188 INFO L854 garLoopResultBuilder]: At program point L482(line 482) the Hoare annotation is: (let ((.cse5 (= ~methAndRunningLastTime~0 0)) (.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 1 |old(~pumpRunning~0)|))) (.cse6 (not (= ~methaneLevelCritical~0 1))) (.cse7 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse1 .cse2 .cse6) (or .cse4 .cse5 .cse1 .cse2 .cse3) (or .cse7 .cse4 .cse1 .cse3) (or .cse7 .cse4 .cse1 .cse6) (or .cse0 .cse1 .cse2 .cse6) (or .cse7 (not (= 0 ~systemActive~0))))) [2021-11-23 03:30:20,189 INFO L854 garLoopResultBuilder]: At program point L482-1(line 482) the Hoare annotation is: (let ((.cse1 (= ~methAndRunningLastTime~0 0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse4 (not (= ~methaneLevelCritical~0 1))) (.cse7 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (<= 1 |old(~pumpRunning~0)|))) (.cse5 (not (= ~methaneLevelCritical~0 0))) (.cse6 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse1 .cse2 .cse3 .cse5) (or .cse6 .cse0 .cse2 .cse5) (or .cse6 .cse0 .cse2 .cse4) (or .cse2 .cse3 (and .cse7 (= |timeShift_isMethaneAlarm_#t~ret18#1| 1)) .cse4) (or (and .cse7 (= |timeShift_isMethaneAlarm_#t~ret18#1| ~methaneLevelCritical~0)) .cse2 .cse3 .cse5) (or .cse6 (not (= 0 ~systemActive~0))))) [2021-11-23 03:30:20,189 INFO L854 garLoopResultBuilder]: At program point L272(line 272) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse4 (= ~methAndRunningLastTime~0 0)) (.cse13 (= ~waterLevel~0 1)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse14 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse2 (not (= 0 ~systemActive~0))) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse8 (not (= ~methaneLevelCritical~0 0))) (.cse10 (<= 1 ~pumpRunning~0)) (.cse11 (or .cse0 .cse14)) (.cse12 (and .cse1 .cse4 (or .cse0 .cse14 .cse13))) (.cse9 (= |timeShift_processEnvironment_~tmp~4#1| ~methaneLevelCritical~0)) (.cse5 (not (= 1 ~systemActive~0))) (.cse7 (not (<= 1 |old(~pumpRunning~0)|))) (.cse6 (not (= ~methaneLevelCritical~0 1)))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse3 .cse4 .cse2) (or .cse0 .cse1 .cse3 (not (= |old(~waterLevel~0)| 1)) .cse5 .cse6) (or .cse3 .cse4 .cse5 .cse7 .cse6) (or .cse3 .cse4 .cse5 .cse7 .cse8) (or .cse5 .cse7 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse9) .cse8) (or .cse0 .cse3 .cse5 (and .cse10 .cse4 .cse11) .cse6 .cse12) (or .cse0 .cse3 .cse5 .cse8 (and .cse10 (not .cse13) .cse4 .cse11) .cse12) (or (and .cse1 .cse9) .cse5 .cse7 .cse6)))) [2021-11-23 03:30:20,189 INFO L858 garLoopResultBuilder]: For program point L272-1(line 272) no Hoare annotation was computed. [2021-11-23 03:30:20,189 INFO L854 garLoopResultBuilder]: At program point L450(line 450) the Hoare annotation is: (let ((.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse2 (not (<= 1 |old(~pumpRunning~0)|))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse5 (not (= ~methaneLevelCritical~0 1))) (.cse4 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1 .cse2 .cse3) (or .cse4 .cse0 .cse1 .cse3) (or .cse1 .cse2 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |timeShift_processEnvironment_~tmp~4#1| ~methaneLevelCritical~0)) .cse3) (or .cse1 .cse2 .cse5) (or .cse4 .cse0 .cse1 .cse5) (or .cse4 (not (= 0 ~systemActive~0))))) [2021-11-23 03:30:20,189 INFO L854 garLoopResultBuilder]: At program point L446(line 446) the Hoare annotation is: (let ((.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= 1 |old(~pumpRunning~0)|))) (.cse4 (not (= ~methaneLevelCritical~0 1))) (.cse5 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2) (or .cse3 (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse4) (or .cse5 .cse3 .cse0 .cse2) (or .cse5 .cse3 .cse0 .cse4) (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |timeShift_processEnvironment_~tmp~4#1| ~methaneLevelCritical~0)) .cse4) (or .cse5 (not (= 0 ~systemActive~0))))) [2021-11-23 03:30:20,190 INFO L854 garLoopResultBuilder]: At program point L455(line 455) the Hoare annotation is: (let ((.cse3 (not (= |old(~pumpRunning~0)| 0)))) (let ((.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse6 (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (or .cse3 (= |old(~waterLevel~0)| ~waterLevel~0) (= ~waterLevel~0 1)))) (.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= 1 |old(~pumpRunning~0)|))) (.cse5 (not (= ~methaneLevelCritical~0 1)))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 .cse0 .cse5 .cse6) (or .cse3 .cse4 .cse0 .cse2 .cse6) (or .cse0 .cse1 .cse5) (or .cse3 (not (= 0 ~systemActive~0)))))) [2021-11-23 03:30:20,190 INFO L854 garLoopResultBuilder]: At program point L455-1(lines 436 460) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse12 (= ~waterLevel~0 1)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse13 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse2 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse7 (not (= ~methaneLevelCritical~0 0))) (.cse9 (<= 1 ~pumpRunning~0)) (.cse10 (or .cse0 .cse13)) (.cse11 (and .cse1 .cse5 (or .cse0 .cse13 .cse12))) (.cse8 (= |timeShift_processEnvironment_~tmp~4#1| ~methaneLevelCritical~0)) (.cse3 (not (= 1 ~systemActive~0))) (.cse6 (not (<= 1 |old(~pumpRunning~0)|))) (.cse4 (not (= ~methaneLevelCritical~0 1)))) (and (or .cse0 .cse1 .cse2 (not (= |old(~waterLevel~0)| 1)) .cse3 .cse4) (or .cse2 .cse5 .cse3 .cse6 .cse4) (or .cse2 .cse5 .cse3 .cse6 .cse7) (or .cse3 .cse6 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse8) .cse7) (or .cse0 .cse2 .cse3 (and .cse9 .cse5 .cse10) .cse4 .cse11) (or .cse0 .cse2 .cse3 .cse7 (and .cse9 (not .cse12) .cse5 .cse10) .cse11) (or (and .cse1 .cse8) .cse3 .cse6 .cse4) (or .cse0 (not (= 0 ~systemActive~0)))))) [2021-11-23 03:30:20,190 INFO L858 garLoopResultBuilder]: For program point L389-1(lines 389 395) no Hoare annotation was computed. [2021-11-23 03:30:20,190 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 288) no Hoare annotation was computed. [2021-11-23 03:30:20,190 INFO L854 garLoopResultBuilder]: At program point L274(lines 274 291) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse15 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse14 (not (= |old(~waterLevel~0)| 1))) (.cse2 (not (= 0 ~systemActive~0))) (.cse11 (= |timeShift_processEnvironment_~tmp~4#1| ~methaneLevelCritical~0)) (.cse12 (not (<= 1 |old(~pumpRunning~0)|))) (.cse8 (not (= ~methaneLevelCritical~0 1))) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse4 (not (= 1 ~systemActive~0))) (.cse13 (not (= ~methaneLevelCritical~0 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse9 (or .cse0 .cse15 (= ~waterLevel~0 1))) (.cse5 (<= 1 ~pumpRunning~0)) (.cse6 (= ~methAndRunningLastTime~0 0)) (.cse10 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (.cse7 (or .cse0 .cse15))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse3 .cse4 (and .cse5 .cse6 .cse7) .cse8 (and .cse1 .cse9)) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse10 .cse11) .cse4 .cse12 .cse13) (or .cse0 .cse1 .cse3 .cse14 .cse4 .cse8) (or .cse0 .cse1 .cse3 .cse14 .cse4 .cse13) (or .cse3 .cse6 .cse4 .cse12 .cse13) (or .cse0 .cse3 (and .cse6 .cse10) .cse13 .cse2) (or (and .cse1 .cse11) .cse4 .cse12 .cse8) (or .cse0 .cse3 .cse4 .cse13 (and .cse1 .cse6 .cse9 .cse10) (and .cse5 .cse6 .cse10 .cse7))))) [2021-11-23 03:30:20,190 INFO L854 garLoopResultBuilder]: At program point L274-1(lines 266 294) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse15 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse12 (= ~waterLevel~0 1))) (let ((.cse1 (not (= 0 ~systemActive~0))) (.cse8 (= |timeShift_processEnvironment_~tmp~4#1| ~methaneLevelCritical~0)) (.cse9 (not (<= 1 |old(~pumpRunning~0)|))) (.cse10 (not (= ~methaneLevelCritical~0 1))) (.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse7 (not (= 1 ~systemActive~0))) (.cse5 (not (= ~methaneLevelCritical~0 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse14 (or .cse0 .cse15 .cse12)) (.cse11 (<= 1 ~pumpRunning~0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse6 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (.cse13 (or .cse0 .cse15))) (and (or .cse0 .cse1 (and .cse2 .cse3)) (or .cse0 .cse4 .cse5 .cse1 .cse6) (or .cse0 .cse2 .cse4 (not (= |old(~waterLevel~0)| 1)) .cse7 .cse5) (or .cse7 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse3 .cse6 .cse8) .cse9 .cse5) (or (and .cse2 .cse3 .cse8) .cse7 .cse9 .cse10) (or .cse0 .cse4 (and .cse11 (not .cse12) .cse13) .cse7 .cse10 (and .cse2 .cse3 .cse14)) (or .cse0 .cse4 .cse7 .cse5 (and .cse2 .cse3 .cse14 .cse6) (and .cse11 .cse3 .cse6 .cse13))))) [2021-11-23 03:30:20,191 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 378 401) the Hoare annotation is: (let ((.cse11 (= 1 ~systemActive~0)) (.cse5 (= ~pumpRunning~0 0)) (.cse8 (= ~methAndRunningLastTime~0 0)) (.cse12 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse6 (not (= 0 ~systemActive~0))) (.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse7 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse10 (and .cse5 .cse8 .cse12)) (.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse0 (and (<= 1 ~pumpRunning~0) (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse11 .cse12)) (.cse1 (not .cse11)) (.cse2 (not (<= 1 |old(~pumpRunning~0)|))) (.cse9 (not (= ~methaneLevelCritical~0 1)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse6) (or .cse4 .cse7 .cse8 .cse6) (or .cse7 .cse8 .cse1 .cse2 .cse9) (or .cse7 .cse8 .cse1 .cse2 .cse3) (or .cse4 .cse7 .cse1 .cse10 .cse9) (or .cse4 .cse7 .cse1 .cse10 .cse3) (or .cse0 .cse1 .cse2 .cse9)))) [2021-11-23 03:30:20,191 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 378 401) no Hoare annotation was computed. [2021-11-23 03:30:20,191 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 300) no Hoare annotation was computed. [2021-11-23 03:30:20,191 INFO L861 garLoopResultBuilder]: At program point L163-2(lines 163 177) the Hoare annotation is: true [2021-11-23 03:30:20,191 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 153 182) no Hoare annotation was computed. [2021-11-23 03:30:20,191 INFO L861 garLoopResultBuilder]: At program point L159(line 159) the Hoare annotation is: true [2021-11-23 03:30:20,191 INFO L858 garLoopResultBuilder]: For program point L159-1(line 159) no Hoare annotation was computed. [2021-11-23 03:30:20,191 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 153 182) the Hoare annotation is: true [2021-11-23 03:30:20,191 INFO L861 garLoopResultBuilder]: At program point L178(lines 153 182) the Hoare annotation is: true [2021-11-23 03:30:20,191 INFO L858 garLoopResultBuilder]: For program point L174(line 174) no Hoare annotation was computed. [2021-11-23 03:30:20,191 INFO L858 garLoopResultBuilder]: For program point L167(lines 167 171) no Hoare annotation was computed. [2021-11-23 03:30:20,192 INFO L861 garLoopResultBuilder]: At program point L167-1(lines 167 171) the Hoare annotation is: true [2021-11-23 03:30:20,192 INFO L861 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 95 103) the Hoare annotation is: true [2021-11-23 03:30:20,192 INFO L858 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 95 103) no Hoare annotation was computed. [2021-11-23 03:30:20,192 INFO L858 garLoopResultBuilder]: For program point L556(lines 556 562) no Hoare annotation was computed. [2021-11-23 03:30:20,192 INFO L854 garLoopResultBuilder]: At program point L556-1(lines 556 562) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (not (= 0 ~systemActive~0))) (and .cse0 (= ~methAndRunningLastTime~0 0) .cse1))) [2021-11-23 03:30:20,192 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 03:30:20,192 INFO L858 garLoopResultBuilder]: For program point L317(lines 316 363) no Hoare annotation was computed. [2021-11-23 03:30:20,192 INFO L858 garLoopResultBuilder]: For program point L346(lines 346 359) no Hoare annotation was computed. [2021-11-23 03:30:20,192 INFO L854 garLoopResultBuilder]: At program point L338(line 338) the Hoare annotation is: (let ((.cse2 (= ~methaneLevelCritical~0 1)) (.cse0 (<= 1 ~pumpRunning~0)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse4 (= ~pumpRunning~0 0)) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse1 .cse3) (and .cse0 .cse6 .cse1 .cse3) (and .cse4 .cse5 .cse3 (= 0 ~systemActive~0)))) [2021-11-23 03:30:20,192 INFO L861 garLoopResultBuilder]: At program point L367(lines 306 371) the Hoare annotation is: true [2021-11-23 03:30:20,193 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 332) no Hoare annotation was computed. [2021-11-23 03:30:20,193 INFO L858 garLoopResultBuilder]: For program point L326-1(lines 326 332) no Hoare annotation was computed. [2021-11-23 03:30:20,193 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:30:20,193 INFO L854 garLoopResultBuilder]: At program point L558(line 558) the Hoare annotation is: (and (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (not (= 0 ~systemActive~0))) [2021-11-23 03:30:20,193 INFO L854 garLoopResultBuilder]: At program point L364(lines 315 365) the Hoare annotation is: false [2021-11-23 03:30:20,193 INFO L858 garLoopResultBuilder]: For program point L352(lines 352 358) no Hoare annotation was computed. [2021-11-23 03:30:20,193 INFO L854 garLoopResultBuilder]: At program point L352-2(lines 346 359) the Hoare annotation is: (let ((.cse2 (= ~methaneLevelCritical~0 1)) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse4 (= ~pumpRunning~0 0)) (.cse0 (<= 1 ~pumpRunning~0)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse1 .cse3) (and .cse4 .cse3 (= 0 ~systemActive~0)) (and .cse0 .cse6 .cse1 .cse3))) [2021-11-23 03:30:20,193 INFO L854 garLoopResultBuilder]: At program point L241(lines 241 248) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 1)) [2021-11-23 03:30:20,193 INFO L858 garLoopResultBuilder]: For program point L336(lines 336 342) no Hoare annotation was computed. [2021-11-23 03:30:20,193 INFO L858 garLoopResultBuilder]: For program point L336-1(lines 336 342) no Hoare annotation was computed. [2021-11-23 03:30:20,193 INFO L861 garLoopResultBuilder]: At program point L241-2(lines 241 248) the Hoare annotation is: true [2021-11-23 03:30:20,194 INFO L854 garLoopResultBuilder]: At program point L361(lines 316 363) the Hoare annotation is: (let ((.cse2 (= ~methaneLevelCritical~0 1)) (.cse0 (<= 1 ~pumpRunning~0)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse4 (= ~pumpRunning~0 0)) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse1 .cse3) (and .cse0 .cse6 .cse1 .cse3) (and .cse4 .cse5 .cse3 (= 0 ~systemActive~0)))) [2021-11-23 03:30:20,194 INFO L854 garLoopResultBuilder]: At program point L328(line 328) the Hoare annotation is: (let ((.cse2 (= ~methaneLevelCritical~0 1)) (.cse0 (<= 1 ~pumpRunning~0)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse4 (= ~pumpRunning~0 0)) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse1 .cse3) (and .cse0 .cse6 .cse1 .cse3) (and .cse4 .cse5 .cse3 (= 0 ~systemActive~0)))) [2021-11-23 03:30:20,194 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 410 434) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 (not (= ~methaneLevelCritical~0 1)) .cse3) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2 (not (<= 1 |old(~pumpRunning~0)|)) .cse4) (or .cse0 .cse1 .cse2 .cse4 .cse3))) [2021-11-23 03:30:20,194 INFO L854 garLoopResultBuilder]: At program point L424(line 424) the Hoare annotation is: (let ((.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse3 (and (= ~pumpRunning~0 0) (or (not (= ~waterLevel~0 1)) (and (<= |processEnvironment__wrappee__highWaterSensor_~tmp~3#1| 0) (< 0 (+ |processEnvironment__wrappee__highWaterSensor_~tmp~3#1| 1)))))) (.cse4 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (<= 1 |old(~pumpRunning~0)|)) .cse1) (or .cse2 .cse0 .cse3 .cse1 .cse4) (or .cse2 .cse0 .cse3 (not (= ~methaneLevelCritical~0 1)) .cse4))) [2021-11-23 03:30:20,194 INFO L854 garLoopResultBuilder]: At program point L418(lines 418 426) the Hoare annotation is: (let ((.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse3 (and (= ~pumpRunning~0 0) (or (not (= ~waterLevel~0 1)) (and (<= |processEnvironment__wrappee__highWaterSensor_~tmp~3#1| 0) (< 0 (+ |processEnvironment__wrappee__highWaterSensor_~tmp~3#1| 1)))))) (.cse4 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (<= 1 |old(~pumpRunning~0)|)) .cse1) (or .cse2 .cse0 .cse3 .cse1 .cse4) (or .cse2 .cse0 .cse3 (not (= ~methaneLevelCritical~0 1)) .cse4))) [2021-11-23 03:30:20,194 INFO L854 garLoopResultBuilder]: At program point L414(lines 414 431) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 (not (= ~methaneLevelCritical~0 1)) .cse3) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2 (not (<= 1 |old(~pumpRunning~0)|)) .cse4) (or .cse0 .cse1 .cse2 .cse4 .cse3))) [2021-11-23 03:30:20,195 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 410 434) no Hoare annotation was computed. [2021-11-23 03:30:20,195 INFO L854 garLoopResultBuilder]: At program point L429(line 429) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 1)) .cse2) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 (not (<= 1 |old(~pumpRunning~0)|)) .cse3) (or .cse0 .cse1 .cse3 .cse2))) [2021-11-23 03:30:20,195 INFO L858 garLoopResultBuilder]: For program point L429-1(lines 410 434) no Hoare annotation was computed. [2021-11-23 03:30:20,195 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 71 82) no Hoare annotation was computed. [2021-11-23 03:30:20,195 INFO L854 garLoopResultBuilder]: At program point waterRiseENTRY(lines 71 82) the Hoare annotation is: (let ((.cse9 (<= 1 ~pumpRunning~0)) (.cse8 (= 1 ~systemActive~0)) (.cse6 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse0 (and .cse9 .cse8 .cse6)) (.cse2 (not .cse9)) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse5 (not (= ~pumpRunning~0 0))) (.cse1 (not .cse8)) (.cse3 (not (= ~methaneLevelCritical~0 1))) (.cse7 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse4 .cse2) (or .cse5 .cse1 .cse4 .cse6 .cse7) (or .cse5 .cse1 .cse3 .cse6 .cse7)))) [2021-11-23 03:30:20,197 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:30:20,198 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:30:20,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:30:20 BoogieIcfgContainer [2021-11-23 03:30:20,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:30:20,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:30:20,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:30:20,238 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:30:20,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:36" (3/4) ... [2021-11-23 03:30:20,242 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:30:20,247 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2021-11-23 03:30:20,247 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-11-23 03:30:20,247 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-11-23 03:30:20,247 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-11-23 03:30:20,247 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-11-23 03:30:20,247 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2021-11-23 03:30:20,263 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:30:20,263 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-11-23 03:30:20,280 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 72 nodes and edges [2021-11-23 03:30:20,284 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2021-11-23 03:30:20,285 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-23 03:30:20,286 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 03:30:20,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 03:30:20,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:30:20,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:30:20,320 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((1 <= pumpRunning && pumpRunning == \old(pumpRunning)) && 1 == systemActive) && \old(waterLevel) == waterLevel) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0)) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(0 == systemActive))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 0))) && ((((((1 <= pumpRunning && pumpRunning == \old(pumpRunning)) && 1 == systemActive) && \old(waterLevel) == waterLevel) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1)) [2021-11-23 03:30:20,323 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || (pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical)) || !(methaneLevelCritical == 0))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((1 <= pumpRunning && methAndRunningLastTime == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || !(methaneLevelCritical == 1)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (((1 <= pumpRunning && !(waterLevel == 1)) && methAndRunningLastTime == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)))) && ((((pumpRunning == 0 && tmp == methaneLevelCritical) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2021-11-23 03:30:20,323 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || !(methAndRunningLastTime == 0)) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) [2021-11-23 03:30:20,325 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((1 <= pumpRunning && methAndRunningLastTime == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || !(methaneLevelCritical == 1)) || (pumpRunning == 0 && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)))) && (((((pumpRunning == \old(pumpRunning) && tmp == 0) && tmp == methaneLevelCritical) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0 && tmp == 0)) || !(methaneLevelCritical == 0)) || !(0 == systemActive))) && ((((pumpRunning == 0 && tmp == methaneLevelCritical) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)) && tmp == 0)) || (((1 <= pumpRunning && methAndRunningLastTime == 0) && tmp == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) [2021-11-23 03:30:20,325 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1)) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || (pumpRunning == \old(pumpRunning) && aux-isMethaneLevelCritical()-aux == 1)) || !(methaneLevelCritical == 1))) && ((((pumpRunning == \old(pumpRunning) && aux-isMethaneLevelCritical()-aux == methaneLevelCritical) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2021-11-23 03:30:20,326 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || !(0 == systemActive)) || (pumpRunning == 0 && methAndRunningLastTime == 0)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(methaneLevelCritical == 0)) || !(0 == systemActive)) || tmp == 0)) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(1 == systemActive) || (((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && tmp == 0) && tmp == methaneLevelCritical)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && (((((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || ((1 <= pumpRunning && !(waterLevel == 1)) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)) && tmp == 0)) || (((1 <= pumpRunning && methAndRunningLastTime == 0) && tmp == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) [2021-11-23 03:30:20,327 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && ((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2021-11-23 03:30:20,328 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0)) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (pumpRunning == 0 && (!(waterLevel == 1) || (tmp <= 0 && 0 < tmp + 1)))) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (pumpRunning == 0 && (!(waterLevel == 1) || (tmp <= 0 && 0 < tmp + 1)))) || !(methaneLevelCritical == 1)) || !(methAndRunningLastTime == 0)) [2021-11-23 03:30:20,392 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:30:20,392 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:30:20,393 INFO L158 Benchmark]: Toolchain (without parser) took 45595.93ms. Allocated memory was 107.0MB in the beginning and 362.8MB in the end (delta: 255.9MB). Free memory was 85.9MB in the beginning and 149.0MB in the end (delta: -63.1MB). Peak memory consumption was 192.5MB. Max. memory is 16.1GB. [2021-11-23 03:30:20,394 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 86.0MB. Free memory was 65.4MB in the beginning and 65.4MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:30:20,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 664.14ms. Allocated memory is still 107.0MB. Free memory was 85.6MB in the beginning and 74.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:30:20,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.43ms. Allocated memory is still 107.0MB. Free memory was 74.3MB in the beginning and 72.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:30:20,395 INFO L158 Benchmark]: Boogie Preprocessor took 40.82ms. Allocated memory is still 107.0MB. Free memory was 72.0MB in the beginning and 70.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:30:20,396 INFO L158 Benchmark]: RCFGBuilder took 829.72ms. Allocated memory is still 107.0MB. Free memory was 70.3MB in the beginning and 49.1MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 03:30:20,396 INFO L158 Benchmark]: TraceAbstraction took 43814.89ms. Allocated memory was 107.0MB in the beginning and 362.8MB in the end (delta: 255.9MB). Free memory was 48.6MB in the beginning and 155.3MB in the end (delta: -106.8MB). Peak memory consumption was 189.9MB. Max. memory is 16.1GB. [2021-11-23 03:30:20,397 INFO L158 Benchmark]: Witness Printer took 154.05ms. Allocated memory is still 362.8MB. Free memory was 155.3MB in the beginning and 149.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:30:20,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 86.0MB. Free memory was 65.4MB in the beginning and 65.4MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 664.14ms. Allocated memory is still 107.0MB. Free memory was 85.6MB in the beginning and 74.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.43ms. Allocated memory is still 107.0MB. Free memory was 74.3MB in the beginning and 72.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.82ms. Allocated memory is still 107.0MB. Free memory was 72.0MB in the beginning and 70.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 829.72ms. Allocated memory is still 107.0MB. Free memory was 70.3MB in the beginning and 49.1MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 43814.89ms. Allocated memory was 107.0MB in the beginning and 362.8MB in the end (delta: 255.9MB). Free memory was 48.6MB in the beginning and 155.3MB in the end (delta: -106.8MB). Peak memory consumption was 189.9MB. Max. memory is 16.1GB. * Witness Printer took 154.05ms. Allocated memory is still 362.8MB. Free memory was 155.3MB in the beginning and 149.0MB 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: 300]: 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 9 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 43.7s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 958 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 934 mSDsluCounter, 2065 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1504 mSDsCounter, 319 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1750 IncrementalHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 319 mSolverCounterUnsat, 814 mSDtfsCounter, 1750 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 453 GetRequests, 321 SyntacticMatches, 11 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=604occurred in iteration=6, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 140 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 1355 PreInvPairs, 1498 NumberOfFragments, 2550 HoareAnnotationTreeSize, 1355 FomulaSimplifications, 2732 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 37 FomulaSimplificationsInter, 13493 FormulaSimplificationTreeSizeReductionInter, 4.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 742 NumberOfCodeBlocks, 742 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 796 ConstructedInterpolants, 0 QuantifiedInterpolants, 2153 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1322 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 230/282 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: 163]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 482]: Loop Invariant Derived loop invariant: (((((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1)) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || (pumpRunning == \old(pumpRunning) && aux-isMethaneLevelCritical()-aux == 1)) || !(methaneLevelCritical == 1))) && ((((pumpRunning == \old(pumpRunning) && aux-isMethaneLevelCritical()-aux == methaneLevelCritical) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 418]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0)) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (pumpRunning == 0 && (!(waterLevel == 1) || (tmp <= 0 && 0 < tmp + 1)))) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (pumpRunning == 0 && (!(waterLevel == 1) || (tmp <= 0 && 0 < tmp + 1)))) || !(methaneLevelCritical == 1)) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 556]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && splverifierCounter == 0) && !(0 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) - InvariantResult [Line: 241]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 378]: Loop Invariant Derived loop invariant: ((((((((((((1 <= pumpRunning && pumpRunning == \old(pumpRunning)) && 1 == systemActive) && \old(waterLevel) == waterLevel) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0)) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(0 == systemActive))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 1))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(methaneLevelCritical == 0))) && ((((((1 <= pumpRunning && pumpRunning == \old(pumpRunning)) && 1 == systemActive) && \old(waterLevel) == waterLevel) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1)) - InvariantResult [Line: 316]: Loop Invariant Derived loop invariant: ((((((1 <= pumpRunning && 1 == systemActive) && methaneLevelCritical == 1) && splverifierCounter == 0) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && methaneLevelCritical == 1) && splverifierCounter == 0)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && 1 == systemActive) && splverifierCounter == 0)) || (((1 <= pumpRunning && methaneLevelCritical == 0) && 1 == systemActive) && splverifierCounter == 0)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) && 0 == systemActive) - InvariantResult [Line: 414]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || !(methAndRunningLastTime == 0)) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 300]: Loop Invariant Derived loop invariant: (((((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && ((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 266]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || !(0 == systemActive)) || (pumpRunning == 0 && methAndRunningLastTime == 0)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(methaneLevelCritical == 0)) || !(0 == systemActive)) || tmp == 0)) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(1 == systemActive) || (((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && tmp == 0) && tmp == methaneLevelCritical)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && (((((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || ((1 <= pumpRunning && !(waterLevel == 1)) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)) && tmp == 0)) || (((1 <= pumpRunning && methAndRunningLastTime == 0) && tmp == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) - InvariantResult [Line: 315]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 241]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && 1 == systemActive) && waterLevel == 1 - InvariantResult [Line: 436]: Loop Invariant Derived loop invariant: (((((((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || (pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical)) || !(methaneLevelCritical == 0))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((1 <= pumpRunning && methAndRunningLastTime == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || !(methaneLevelCritical == 1)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (((1 <= pumpRunning && !(waterLevel == 1)) && methAndRunningLastTime == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)))) && ((((pumpRunning == 0 && tmp == methaneLevelCritical) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 153]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 306]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 274]: Loop Invariant Derived loop invariant: (((((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((1 <= pumpRunning && methAndRunningLastTime == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) || !(methaneLevelCritical == 1)) || (pumpRunning == 0 && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)))) && (((((pumpRunning == \old(pumpRunning) && tmp == 0) && tmp == methaneLevelCritical) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 1))) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 0))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0 && tmp == 0)) || !(methaneLevelCritical == 0)) || !(0 == systemActive))) && ((((pumpRunning == 0 && tmp == methaneLevelCritical) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical == 1))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)) && tmp == 0)) || (((1 <= pumpRunning && methAndRunningLastTime == 0) && tmp == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel))) RESULT: Ultimate proved your program to be correct! [2021-11-23 03:30:20,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b1ef89-0ee7-4f8a-8b88-74dedf71648a/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