./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product53.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_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/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_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/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_67ab18b9-14a7-42af-9a22-b81191e0f0d6/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 e7a194b3d6e079d2329a0d70eaa59b34ff3d58300de8b046ef1cd7cff7f67b94 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:34:39,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:34:39,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:34:39,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:34:39,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:34:39,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:34:39,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:34:39,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:34:39,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:34:39,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:34:39,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:34:39,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:34:39,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:34:39,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:34:39,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:34:39,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:34:39,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:34:39,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:34:39,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:34:39,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:34:39,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:34:39,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:34:39,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:34:39,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:34:39,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:34:39,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:34:39,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:34:39,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:34:39,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:34:39,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:34:39,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:34:39,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:34:39,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:34:39,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:34:39,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:34:39,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:34:39,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:34:39,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:34:39,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:34:39,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:34:39,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:34:39,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:34:40,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:34:40,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:34:40,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:34:40,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:34:40,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:34:40,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:34:40,049 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:34:40,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:34:40,050 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:34:40,050 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:34:40,051 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:34:40,052 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:34:40,052 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:34:40,052 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:34:40,053 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:34:40,053 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:34:40,053 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:34:40,053 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:34:40,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:34:40,055 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:34:40,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:34:40,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:34:40,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:34:40,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:34:40,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:34:40,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:34:40,059 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:34:40,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:34:40,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:34:40,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:34:40,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:34:40,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:34:40,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:34:40,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:34:40,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:34:40,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:34:40,062 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:34:40,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:34:40,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:34:40,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:34:40,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:34:40,063 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_67ab18b9-14a7-42af-9a22-b81191e0f0d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7a194b3d6e079d2329a0d70eaa59b34ff3d58300de8b046ef1cd7cff7f67b94 [2021-11-23 03:34:40,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:34:40,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:34:40,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:34:40,486 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:34:40,486 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:34:40,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c [2021-11-23 03:34:40,578 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/data/b57d7df1b/7165f70f3fda4db9a8aa0a3b3ddd7b04/FLAG3bf6c7e11 [2021-11-23 03:34:41,205 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:34:41,205 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c [2021-11-23 03:34:41,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/data/b57d7df1b/7165f70f3fda4db9a8aa0a3b3ddd7b04/FLAG3bf6c7e11 [2021-11-23 03:34:41,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/data/b57d7df1b/7165f70f3fda4db9a8aa0a3b3ddd7b04 [2021-11-23 03:34:41,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:34:41,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:34:41,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:34:41,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:34:41,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:34:41,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:41,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e9bf49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41, skipping insertion in model container [2021-11-23 03:34:41,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:41,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:34:41,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:34:41,871 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_67ab18b9-14a7-42af-9a22-b81191e0f0d6/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c[17915,17928] [2021-11-23 03:34:41,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:34:41,892 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:34:41,962 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_67ab18b9-14a7-42af-9a22-b81191e0f0d6/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c[17915,17928] [2021-11-23 03:34:41,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:34:41,991 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:34:41,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41 WrapperNode [2021-11-23 03:34:41,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:34:41,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:34:41,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:34:41,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:34:42,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:42,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:42,048 INFO L137 Inliner]: procedures = 58, calls = 161, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 286 [2021-11-23 03:34:42,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:34:42,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:34:42,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:34:42,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:34:42,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:42,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:42,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:42,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:42,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:42,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:42,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:42,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:34:42,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:34:42,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:34:42,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:34:42,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41" (1/1) ... [2021-11-23 03:34:42,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:34:42,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:34:42,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:34:42,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:34:42,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:34:42,195 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 03:34:42,196 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 03:34:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 03:34:42,196 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 03:34:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 03:34:42,196 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 03:34:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:34:42,197 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:34:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 03:34:42,197 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 03:34:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-11-23 03:34:42,198 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-11-23 03:34:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-11-23 03:34:42,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-11-23 03:34:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-23 03:34:42,198 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-23 03:34:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:34:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 03:34:42,199 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 03:34:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:34:42,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:34:42,312 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:34:42,314 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:34:42,813 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:34:42,954 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:34:42,957 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:34:42,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:42 BoogieIcfgContainer [2021-11-23 03:34:42,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:34:42,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:34:42,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:34:42,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:34:42,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:34:41" (1/3) ... [2021-11-23 03:34:42,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3bf07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:34:42, skipping insertion in model container [2021-11-23 03:34:42,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:41" (2/3) ... [2021-11-23 03:34:42,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3bf07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:34:42, skipping insertion in model container [2021-11-23 03:34:42,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:42" (3/3) ... [2021-11-23 03:34:42,973 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2021-11-23 03:34:42,982 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:34:42,982 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:34:43,084 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:34:43,108 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 03:34:43,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:34:43,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 52 states have internal predecessors, (60), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:34:43,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 03:34:43,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:43,138 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:43,139 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:43,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:43,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1080362011, now seen corresponding path program 1 times [2021-11-23 03:34:43,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:43,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261799321] [2021-11-23 03:34:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:43,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:34:43,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:43,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261799321] [2021-11-23 03:34:43,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261799321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:43,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:43,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:34:43,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550013473] [2021-11-23 03:34:43,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:43,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:34:43,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:43,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:34:43,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:34:43,512 INFO L87 Difference]: Start difference. First operand has 69 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 52 states have internal predecessors, (60), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:34:43,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:43,630 INFO L93 Difference]: Finished difference Result 136 states and 185 transitions. [2021-11-23 03:34:43,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:34:43,633 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-11-23 03:34:43,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:43,644 INFO L225 Difference]: With dead ends: 136 [2021-11-23 03:34:43,645 INFO L226 Difference]: Without dead ends: 64 [2021-11-23 03:34:43,649 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 03:34:43,653 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:43,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:34:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-23 03:34:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-23 03:34:43,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 48 states have internal predecessors, (52), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 03:34:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2021-11-23 03:34:43,704 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 21 [2021-11-23 03:34:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:43,704 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2021-11-23 03:34:43,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:34:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2021-11-23 03:34:43,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 03:34:43,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:43,709 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:43,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:34:43,710 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:43,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1884563309, now seen corresponding path program 1 times [2021-11-23 03:34:43,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:43,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788607621] [2021-11-23 03:34:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:43,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:34:43,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:43,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788607621] [2021-11-23 03:34:43,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788607621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:43,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:43,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:34:43,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027385569] [2021-11-23 03:34:43,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:43,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:34:43,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:43,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:34:43,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:34:43,848 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:34:44,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:44,027 INFO L93 Difference]: Finished difference Result 126 states and 167 transitions. [2021-11-23 03:34:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:34:44,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-11-23 03:34:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:44,030 INFO L225 Difference]: With dead ends: 126 [2021-11-23 03:34:44,030 INFO L226 Difference]: Without dead ends: 64 [2021-11-23 03:34:44,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 03:34:44,033 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 77 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:44,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 89 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:34:44,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-23 03:34:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-23 03:34:44,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 48 states have internal predecessors, (51), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 03:34:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2021-11-23 03:34:44,055 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 24 [2021-11-23 03:34:44,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:44,056 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2021-11-23 03:34:44,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:34:44,057 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2021-11-23 03:34:44,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:34:44,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:44,059 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:44,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:34:44,060 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:44,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1038902139, now seen corresponding path program 1 times [2021-11-23 03:34:44,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:44,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991115990] [2021-11-23 03:34:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:44,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:34:44,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:44,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991115990] [2021-11-23 03:34:44,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991115990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:44,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:44,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:34:44,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546859389] [2021-11-23 03:34:44,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:44,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:34:44,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:44,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:34:44,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:44,146 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:34:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:44,192 INFO L93 Difference]: Finished difference Result 105 states and 135 transitions. [2021-11-23 03:34:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:34:44,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-11-23 03:34:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:44,195 INFO L225 Difference]: With dead ends: 105 [2021-11-23 03:34:44,195 INFO L226 Difference]: Without dead ends: 56 [2021-11-23 03:34:44,196 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 03:34:44,198 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:44,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:34:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-23 03:34:44,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-23 03:34:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 43 states have internal predecessors, (45), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 03:34:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2021-11-23 03:34:44,212 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 28 [2021-11-23 03:34:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:44,212 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2021-11-23 03:34:44,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:34:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2021-11-23 03:34:44,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 03:34:44,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:44,215 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:44,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:34:44,215 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:44,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:44,216 INFO L85 PathProgramCache]: Analyzing trace with hash -250429362, now seen corresponding path program 1 times [2021-11-23 03:34:44,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:44,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535667965] [2021-11-23 03:34:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:44,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:34:44,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:44,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535667965] [2021-11-23 03:34:44,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535667965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:44,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:44,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:34:44,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135000622] [2021-11-23 03:34:44,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:44,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:34:44,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:44,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:34:44,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:44,290 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:34:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:44,414 INFO L93 Difference]: Finished difference Result 151 states and 197 transitions. [2021-11-23 03:34:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:34:44,415 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-11-23 03:34:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:44,417 INFO L225 Difference]: With dead ends: 151 [2021-11-23 03:34:44,417 INFO L226 Difference]: Without dead ends: 97 [2021-11-23 03:34:44,419 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 03:34:44,421 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 44 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:44,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 122 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:34:44,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-23 03:34:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2021-11-23 03:34:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 69 states have internal predecessors, (77), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (24), 16 states have call predecessors, (24), 18 states have call successors, (24) [2021-11-23 03:34:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 119 transitions. [2021-11-23 03:34:44,461 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 119 transitions. Word has length 30 [2021-11-23 03:34:44,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:44,461 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 119 transitions. [2021-11-23 03:34:44,462 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:34:44,462 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 119 transitions. [2021-11-23 03:34:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 03:34:44,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:44,464 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:44,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:34:44,465 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:44,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1402126779, now seen corresponding path program 1 times [2021-11-23 03:34:44,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:44,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74065539] [2021-11-23 03:34:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:44,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:34:44,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:44,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74065539] [2021-11-23 03:34:44,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74065539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:44,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:44,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:34:44,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901611094] [2021-11-23 03:34:44,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:44,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:34:44,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:44,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:34:44,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:34:44,601 INFO L87 Difference]: Start difference. First operand 95 states and 119 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:34:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:44,863 INFO L93 Difference]: Finished difference Result 277 states and 346 transitions. [2021-11-23 03:34:44,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:34:44,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2021-11-23 03:34:44,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:44,875 INFO L225 Difference]: With dead ends: 277 [2021-11-23 03:34:44,879 INFO L226 Difference]: Without dead ends: 184 [2021-11-23 03:34:44,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:34:44,885 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 104 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:44,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 292 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:34:44,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-23 03:34:44,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 176. [2021-11-23 03:34:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 113 states have (on average 1.238938053097345) internal successors, (140), 125 states have internal predecessors, (140), 33 states have call successors, (33), 28 states have call predecessors, (33), 29 states have return successors, (45), 30 states have call predecessors, (45), 33 states have call successors, (45) [2021-11-23 03:34:44,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 218 transitions. [2021-11-23 03:34:44,954 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 218 transitions. Word has length 37 [2021-11-23 03:34:44,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:44,955 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 218 transitions. [2021-11-23 03:34:44,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:34:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 218 transitions. [2021-11-23 03:34:44,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 03:34:44,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:44,962 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:44,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:34:44,963 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:44,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash 775405151, now seen corresponding path program 1 times [2021-11-23 03:34:44,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:44,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17224090] [2021-11-23 03:34:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:44,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:34:45,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:45,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17224090] [2021-11-23 03:34:45,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17224090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:45,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:45,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:34:45,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169190629] [2021-11-23 03:34:45,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:45,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:34:45,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:45,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:34:45,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:34:45,187 INFO L87 Difference]: Start difference. First operand 176 states and 218 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:34:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:45,726 INFO L93 Difference]: Finished difference Result 424 states and 540 transitions. [2021-11-23 03:34:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 03:34:45,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 40 [2021-11-23 03:34:45,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:45,744 INFO L225 Difference]: With dead ends: 424 [2021-11-23 03:34:45,744 INFO L226 Difference]: Without dead ends: 304 [2021-11-23 03:34:45,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:34:45,752 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 206 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:45,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 267 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:34:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-23 03:34:45,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 261. [2021-11-23 03:34:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 172 states have (on average 1.244186046511628) internal successors, (214), 189 states have internal predecessors, (214), 46 states have call successors, (46), 35 states have call predecessors, (46), 42 states have return successors, (65), 47 states have call predecessors, (65), 46 states have call successors, (65) [2021-11-23 03:34:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 325 transitions. [2021-11-23 03:34:45,840 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 325 transitions. Word has length 40 [2021-11-23 03:34:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:45,840 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 325 transitions. [2021-11-23 03:34:45,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:34:45,841 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 325 transitions. [2021-11-23 03:34:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 03:34:45,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:45,851 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:45,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:34:45,851 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:45,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:45,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1685826622, now seen corresponding path program 1 times [2021-11-23 03:34:45,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:45,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685261603] [2021-11-23 03:34:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:45,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:34:45,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:45,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685261603] [2021-11-23 03:34:45,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685261603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:45,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:45,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:34:45,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790499789] [2021-11-23 03:34:45,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:45,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:34:45,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:45,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:34:45,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:34:45,980 INFO L87 Difference]: Start difference. First operand 261 states and 325 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:34:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:46,287 INFO L93 Difference]: Finished difference Result 555 states and 698 transitions. [2021-11-23 03:34:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:34:46,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2021-11-23 03:34:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:46,292 INFO L225 Difference]: With dead ends: 555 [2021-11-23 03:34:46,292 INFO L226 Difference]: Without dead ends: 296 [2021-11-23 03:34:46,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:34:46,295 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 68 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:46,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 282 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:34:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-23 03:34:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 268. [2021-11-23 03:34:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 176 states have (on average 1.2102272727272727) internal successors, (213), 193 states have internal predecessors, (213), 47 states have call successors, (47), 35 states have call predecessors, (47), 44 states have return successors, (70), 50 states have call predecessors, (70), 47 states have call successors, (70) [2021-11-23 03:34:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 330 transitions. [2021-11-23 03:34:46,363 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 330 transitions. Word has length 40 [2021-11-23 03:34:46,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:46,366 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 330 transitions. [2021-11-23 03:34:46,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:34:46,367 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 330 transitions. [2021-11-23 03:34:46,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 03:34:46,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:46,379 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, 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] [2021-11-23 03:34:46,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:34:46,380 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:46,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash 339201667, now seen corresponding path program 1 times [2021-11-23 03:34:46,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:46,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92215574] [2021-11-23 03:34:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:46,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 03:34:46,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:46,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92215574] [2021-11-23 03:34:46,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92215574] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:34:46,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401998414] [2021-11-23 03:34:46,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:46,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:34:46,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:34:46,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:34:46,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:34:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:46,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:34:46,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:34:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:47,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:34:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 03:34:47,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401998414] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:34:47,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1716993670] [2021-11-23 03:34:47,370 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2021-11-23 03:34:47,370 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:34:47,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:34:47,387 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:34:47,387 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:34:54,088 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 54 for LOIs [2021-11-23 03:34:54,104 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2021-11-23 03:34:54,530 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 57 for LOIs [2021-11-23 03:34:54,831 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 34 for LOIs [2021-11-23 03:34:54,874 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 55 for LOIs [2021-11-23 03:34:54,892 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:34:59,658 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4837#(and (= |timeShift___utac_acc__Specification5_spec__3_~tmp~9#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (<= 0 |old(~pumpRunning~0)|) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (<= |old(~pumpRunning~0)| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~9#1| 2)) (<= 2 |old(~waterLevel~0)|) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= 2 |timeShift_getWaterLevel_#res#1|) (= ~head~0.base 0) (= |#NULL.offset| 0) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~3#1|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 03:34:59,658 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:34:59,659 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:34:59,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2021-11-23 03:34:59,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227433664] [2021-11-23 03:34:59,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:34:59,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:34:59,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:59,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:34:59,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1437, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 03:34:59,662 INFO L87 Difference]: Start difference. First operand 268 states and 330 transitions. Second operand has 12 states, 10 states have (on average 8.5) internal successors, (85), 11 states have internal predecessors, (85), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (20), 8 states have call predecessors, (20), 6 states have call successors, (20) [2021-11-23 03:35:00,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:00,439 INFO L93 Difference]: Finished difference Result 442 states and 547 transitions. [2021-11-23 03:35:00,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 03:35:00,439 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.5) internal successors, (85), 11 states have internal predecessors, (85), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (20), 8 states have call predecessors, (20), 6 states have call successors, (20) Word has length 71 [2021-11-23 03:35:00,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:00,442 INFO L225 Difference]: With dead ends: 442 [2021-11-23 03:35:00,442 INFO L226 Difference]: Without dead ends: 295 [2021-11-23 03:35:00,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 184 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=329, Invalid=2863, Unknown=0, NotChecked=0, Total=3192 [2021-11-23 03:35:00,448 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 188 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:00,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 631 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:35:00,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-23 03:35:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2021-11-23 03:35:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 188 states have (on average 1.1648936170212767) internal successors, (219), 208 states have internal predecessors, (219), 53 states have call successors, (53), 45 states have call predecessors, (53), 51 states have return successors, (66), 53 states have call predecessors, (66), 53 states have call successors, (66) [2021-11-23 03:35:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 338 transitions. [2021-11-23 03:35:00,486 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 338 transitions. Word has length 71 [2021-11-23 03:35:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:00,486 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 338 transitions. [2021-11-23 03:35:00,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.5) internal successors, (85), 11 states have internal predecessors, (85), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (20), 8 states have call predecessors, (20), 6 states have call successors, (20) [2021-11-23 03:35:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 338 transitions. [2021-11-23 03:35:00,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 03:35:00,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:00,491 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:00,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:00,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 03:35:00,711 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:00,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:00,711 INFO L85 PathProgramCache]: Analyzing trace with hash 979712234, now seen corresponding path program 1 times [2021-11-23 03:35:00,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:00,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873859810] [2021-11-23 03:35:00,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:00,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-23 03:35:00,790 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:00,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873859810] [2021-11-23 03:35:00,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873859810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:00,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:00,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:35:00,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530486506] [2021-11-23 03:35:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:00,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:35:00,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:35:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:00,800 INFO L87 Difference]: Start difference. First operand 293 states and 338 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-23 03:35:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:01,031 INFO L93 Difference]: Finished difference Result 753 states and 875 transitions. [2021-11-23 03:35:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:35:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2021-11-23 03:35:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:01,042 INFO L225 Difference]: With dead ends: 753 [2021-11-23 03:35:01,043 INFO L226 Difference]: Without dead ends: 582 [2021-11-23 03:35:01,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:35:01,044 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 142 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:01,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 237 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:35:01,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-11-23 03:35:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 580. [2021-11-23 03:35:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 373 states have (on average 1.160857908847185) internal successors, (433), 410 states have internal predecessors, (433), 104 states have call successors, (104), 90 states have call predecessors, (104), 102 states have return successors, (130), 106 states have call predecessors, (130), 104 states have call successors, (130) [2021-11-23 03:35:01,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 667 transitions. [2021-11-23 03:35:01,096 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 667 transitions. Word has length 93 [2021-11-23 03:35:01,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:01,097 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 667 transitions. [2021-11-23 03:35:01,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-23 03:35:01,097 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 667 transitions. [2021-11-23 03:35:01,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 03:35:01,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:01,101 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 03:35:01,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:35:01,101 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:01,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:01,102 INFO L85 PathProgramCache]: Analyzing trace with hash 565569439, now seen corresponding path program 1 times [2021-11-23 03:35:01,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:01,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471632842] [2021-11-23 03:35:01,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:01,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-23 03:35:01,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:01,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471632842] [2021-11-23 03:35:01,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471632842] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:35:01,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075400842] [2021-11-23 03:35:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:01,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:01,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:35:01,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:35:01,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:35:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:01,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 03:35:01,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 03:35:01,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:35:02,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075400842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:35:02,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2022379905] [2021-11-23 03:35:02,126 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2021-11-23 03:35:02,126 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:35:02,127 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:35:02,127 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:35:02,127 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:35:12,541 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 53 for LOIs [2021-11-23 03:35:12,553 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 37 for LOIs [2021-11-23 03:35:12,943 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 27 for LOIs [2021-11-23 03:35:13,017 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2021-11-23 03:35:13,050 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 46 for LOIs [2021-11-23 03:35:13,060 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 31 for LOIs [2021-11-23 03:35:13,066 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 32 for LOIs [2021-11-23 03:35:13,071 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:35:18,808 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8669#(and (= |timeShift___utac_acc__Specification5_spec__3_~tmp~9#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (<= ~methaneLevelCritical~0 1) (<= 0 |old(~pumpRunning~0)|) (<= |old(~pumpRunning~0)| 1) (= ~head~0.offset 0) (<= |old(~switchedOnBeforeTS~0)| 2147483647) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~3#1| 1) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~3#1| 0)) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~9#1| 2)) (<= 0 (+ |old(~switchedOnBeforeTS~0)| 2147483648)) (<= 0 (+ 2147483648 |timeShift_getWaterLevel_#res#1|)) (<= 0 ~methaneLevelCritical~0) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~3#1|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 03:35:18,809 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:35:18,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:35:18,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2021-11-23 03:35:18,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528558838] [2021-11-23 03:35:18,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:35:18,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 03:35:18,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:18,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 03:35:18,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=2574, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 03:35:18,813 INFO L87 Difference]: Start difference. First operand 580 states and 667 transitions. Second operand has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2021-11-23 03:35:20,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:20,605 INFO L93 Difference]: Finished difference Result 1680 states and 2106 transitions. [2021-11-23 03:35:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 03:35:20,606 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) Word has length 96 [2021-11-23 03:35:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:20,622 INFO L225 Difference]: With dead ends: 1680 [2021-11-23 03:35:20,622 INFO L226 Difference]: Without dead ends: 1086 [2021-11-23 03:35:20,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 245 SyntacticMatches, 9 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=660, Invalid=5820, Unknown=0, NotChecked=0, Total=6480 [2021-11-23 03:35:20,629 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 493 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:20,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 404 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 03:35:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2021-11-23 03:35:20,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 730. [2021-11-23 03:35:20,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 473 states have (on average 1.1268498942917549) internal successors, (533), 516 states have internal predecessors, (533), 124 states have call successors, (124), 112 states have call predecessors, (124), 132 states have return successors, (164), 134 states have call predecessors, (164), 124 states have call successors, (164) [2021-11-23 03:35:20,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 821 transitions. [2021-11-23 03:35:20,731 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 821 transitions. Word has length 96 [2021-11-23 03:35:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:20,732 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 821 transitions. [2021-11-23 03:35:20,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2021-11-23 03:35:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 821 transitions. [2021-11-23 03:35:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-23 03:35:20,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:20,744 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 03:35:20,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:20,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:20,969 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:20,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1326863646, now seen corresponding path program 1 times [2021-11-23 03:35:20,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:20,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661246961] [2021-11-23 03:35:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:20,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 25 proven. 31 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-23 03:35:21,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:21,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661246961] [2021-11-23 03:35:21,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661246961] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:35:21,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582921145] [2021-11-23 03:35:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:21,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:21,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:35:21,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:35:21,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:35:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:21,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 03:35:21,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:35:21,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 51 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-23 03:35:22,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582921145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:35:22,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [758477803] [2021-11-23 03:35:22,751 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2021-11-23 03:35:22,751 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:35:22,752 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:35:22,752 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:35:22,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:35:34,225 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 55 for LOIs [2021-11-23 03:35:34,235 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 37 for LOIs [2021-11-23 03:35:34,604 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 29 for LOIs [2021-11-23 03:35:34,654 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 29 for LOIs [2021-11-23 03:35:34,679 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 46 for LOIs [2021-11-23 03:35:34,686 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 47 for LOIs [2021-11-23 03:35:34,695 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 34 for LOIs [2021-11-23 03:35:34,698 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:35:40,994 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13081#(and (= |timeShift___utac_acc__Specification5_spec__3_~tmp~9#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (<= ~methaneLevelCritical~0 1) (<= 0 |old(~pumpRunning~0)|) (<= |old(~pumpRunning~0)| 1) (= ~head~0.offset 0) (<= |old(~switchedOnBeforeTS~0)| 2147483647) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~3#1| 1) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~3#1| 0)) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~9#1| 2)) (<= 0 (+ |old(~switchedOnBeforeTS~0)| 2147483648)) (<= 0 (+ 2147483648 |timeShift_getWaterLevel_#res#1|)) (<= 0 ~methaneLevelCritical~0) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~3#1|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 03:35:40,994 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:35:40,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:35:40,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 33 [2021-11-23 03:35:40,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566168759] [2021-11-23 03:35:40,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:35:40,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-23 03:35:40,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:40,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-23 03:35:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=4004, Unknown=0, NotChecked=0, Total=4422 [2021-11-23 03:35:40,998 INFO L87 Difference]: Start difference. First operand 730 states and 821 transitions. Second operand has 33 states, 33 states have (on average 4.484848484848484) internal successors, (148), 33 states have internal predecessors, (148), 17 states have call successors, (33), 8 states have call predecessors, (33), 12 states have return successors, (34), 20 states have call predecessors, (34), 16 states have call successors, (34) [2021-11-23 03:35:44,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:44,389 INFO L93 Difference]: Finished difference Result 1792 states and 2079 transitions. [2021-11-23 03:35:44,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-23 03:35:44,390 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.484848484848484) internal successors, (148), 33 states have internal predecessors, (148), 17 states have call successors, (33), 8 states have call predecessors, (33), 12 states have return successors, (34), 20 states have call predecessors, (34), 16 states have call successors, (34) Word has length 101 [2021-11-23 03:35:44,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:44,392 INFO L225 Difference]: With dead ends: 1792 [2021-11-23 03:35:44,392 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:35:44,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 272 SyntacticMatches, 11 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1296, Invalid=10694, Unknown=0, NotChecked=0, Total=11990 [2021-11-23 03:35:44,403 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1576 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 1253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1253 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:44,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 889 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1253 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:35:44,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:35:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:35:44,405 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 03:35:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:35:44,406 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2021-11-23 03:35:44,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:44,406 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:35:44,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.484848484848484) internal successors, (148), 33 states have internal predecessors, (148), 17 states have call successors, (33), 8 states have call predecessors, (33), 12 states have return successors, (34), 20 states have call predecessors, (34), 16 states have call successors, (34) [2021-11-23 03:35:44,407 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:35:44,407 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:35:44,410 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:35:44,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:44,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:44,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:35:54,936 INFO L854 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 551 558) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 1 ~switchedOnBeforeTS~0))) (.cse3 (= ~pumpRunning~0 1))) (and (or (not (<= ~waterLevel~0 0)) .cse0 .cse1 .cse2 .cse3) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3))) [2021-11-23 03:35:54,936 INFO L858 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 551 558) no Hoare annotation was computed. [2021-11-23 03:35:54,936 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 458 464) no Hoare annotation was computed. [2021-11-23 03:35:54,937 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 458 464) the Hoare annotation is: true [2021-11-23 03:35:54,937 INFO L854 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 943 954) the Hoare annotation is: (let ((.cse5 (= |old(~methaneLevelCritical~0)| 0)) (.cse2 (= ~methaneLevelCritical~0 0))) (let ((.cse7 (not (< ~waterLevel~0 3))) (.cse6 (not .cse2)) (.cse8 (not (= ~pumpRunning~0 1))) (.cse3 (not (<= ~waterLevel~0 1))) (.cse9 (not (<= 1 ~switchedOnBeforeTS~0))) (.cse0 (not .cse5)) (.cse1 (not (= ~pumpRunning~0 0))) (.cse10 (not (= 2 ~waterLevel~0))) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse5 .cse6 .cse4 .cse7) (or .cse5 .cse6 .cse8 .cse4 .cse9 .cse7) (or .cse10 .cse5 .cse6 .cse8 .cse4) (or .cse0 .cse2 .cse10 .cse8 .cse4) (or .cse0 .cse2 .cse8 .cse3 .cse4 .cse9) (or .cse0 .cse1 .cse2 .cse10 .cse4)))) [2021-11-23 03:35:54,937 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 943 954) no Hoare annotation was computed. [2021-11-23 03:35:54,937 INFO L858 garLoopResultBuilder]: For program point L833(line 833) no Hoare annotation was computed. [2021-11-23 03:35:54,937 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 812 841) no Hoare annotation was computed. [2021-11-23 03:35:54,938 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 812 841) the Hoare annotation is: true [2021-11-23 03:35:54,938 INFO L858 garLoopResultBuilder]: For program point L826(lines 826 830) no Hoare annotation was computed. [2021-11-23 03:35:54,938 INFO L861 garLoopResultBuilder]: At program point L826-1(lines 826 830) the Hoare annotation is: true [2021-11-23 03:35:54,938 INFO L861 garLoopResultBuilder]: At program point L822-2(lines 822 836) the Hoare annotation is: true [2021-11-23 03:35:54,938 INFO L861 garLoopResultBuilder]: At program point L818(line 818) the Hoare annotation is: true [2021-11-23 03:35:54,938 INFO L858 garLoopResultBuilder]: For program point L818-1(line 818) no Hoare annotation was computed. [2021-11-23 03:35:54,939 INFO L861 garLoopResultBuilder]: At program point L837(lines 812 841) the Hoare annotation is: true [2021-11-23 03:35:54,939 INFO L854 garLoopResultBuilder]: At program point L791(line 791) the Hoare annotation is: (let ((.cse7 (not (= |old(~waterLevel~0)| 2))) (.cse6 (not (= |old(~pumpRunning~0)| 1))) (.cse3 (<= 1 ~switchedOnBeforeTS~0)) (.cse4 (or (= |timeShift_processEnvironment_~tmp~5#1| 0) (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (.cse5 (= ~pumpRunning~0 1)) (.cse9 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~9#1| ~waterLevel~0)) (.cse11 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse8 (= 0 ~systemActive~0))) (and (let ((.cse2 (= ~waterLevel~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse1 .cse2 .cse3 .cse4 .cse5) .cse6 .cse7 .cse8)) (or .cse9 .cse7 .cse8) (let ((.cse10 (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)))) (or (not (<= |old(~waterLevel~0)| 1)) (and .cse0 (or .cse10 (and (<= |old(~waterLevel~0)| 0) .cse11)) .cse1 .cse3 .cse4) .cse6 (and (<= ~waterLevel~0 0) .cse1 (or .cse10 .cse11) .cse3 .cse4 .cse5) .cse8 (not (<= 1 |old(~switchedOnBeforeTS~0)|)))) (or .cse9 (and .cse0 .cse1 .cse11) .cse8 (not (< |old(~waterLevel~0)| 3))))) [2021-11-23 03:35:54,939 INFO L858 garLoopResultBuilder]: For program point L791-1(line 791) no Hoare annotation was computed. [2021-11-23 03:35:54,939 INFO L854 garLoopResultBuilder]: At program point L445-1(lines 445 451) the Hoare annotation is: (let ((.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse7 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= ~pumpRunning~0 1)) (.cse2 (= ~pumpRunning~0 0)) (.cse5 (<= 1 ~switchedOnBeforeTS~0)) (.cse6 (or (= |timeShift_processEnvironment_~tmp~5#1| 0) (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (.cse3 (= 0 ~systemActive~0))) (and (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (not (= |old(~pumpRunning~0)| 0)) (and .cse2 .cse0) .cse3 (not (< |old(~waterLevel~0)| 3))) (let ((.cse4 (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)))) (or (not (<= |old(~waterLevel~0)| 1)) (and .cse2 (or .cse4 (and (<= |old(~waterLevel~0)| 0) .cse0)) .cse5 .cse6) .cse7 .cse3 (and (<= ~waterLevel~0 0) (or .cse4 .cse0) .cse5 .cse6 .cse1) (not (<= 1 |old(~switchedOnBeforeTS~0)|)))) (let ((.cse8 (= ~waterLevel~0 1))) (or .cse7 (and .cse8 .cse5 .cse6 .cse1) (and .cse2 .cse8 .cse5 .cse6) (not (= |old(~waterLevel~0)| 2)) .cse3)))) [2021-11-23 03:35:54,940 INFO L854 garLoopResultBuilder]: At program point L532(line 532) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 1))) (.cse0 (= 0 ~systemActive~0)) (.cse2 (<= 1 ~switchedOnBeforeTS~0)) (.cse3 (or (= |timeShift_processEnvironment_~tmp~5#1| 0) (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (.cse4 (= ~pumpRunning~0 1))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (< |old(~waterLevel~0)| 3))) (or .cse1 (and (= ~waterLevel~0 1) .cse2 .cse3 .cse4) (not (= |old(~waterLevel~0)| 2)) .cse0) (or (not (<= |old(~waterLevel~0)| 1)) .cse1 .cse0 (and (<= ~waterLevel~0 0) (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse2 .cse3 .cse4) (not (<= 1 |old(~switchedOnBeforeTS~0)|))))) [2021-11-23 03:35:54,940 INFO L854 garLoopResultBuilder]: At program point L528(line 528) the Hoare annotation is: (let ((.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse1 (not (< |old(~waterLevel~0)| 3))) (.cse3 (not (= |old(~pumpRunning~0)| 1))) (.cse0 (= 0 ~systemActive~0)) (.cse5 (<= 1 ~switchedOnBeforeTS~0)) (.cse6 (or (= |timeShift_processEnvironment_~tmp~5#1| 0) (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (.cse7 (= ~pumpRunning~0 1)) (.cse8 (not (<= 1 |old(~switchedOnBeforeTS~0)|)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (or .cse2 .cse3 .cse4 .cse0) (or .cse3 (and (= ~waterLevel~0 1) .cse5 .cse6 .cse7) .cse4 .cse0) (or .cse2 .cse3 .cse0 .cse8 .cse1) (or (not (<= |old(~waterLevel~0)| 1)) .cse3 .cse0 (and (<= ~waterLevel~0 0) (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse5 .cse6 .cse7) .cse8))) [2021-11-23 03:35:54,940 INFO L854 garLoopResultBuilder]: At program point L912(line 912) the Hoare annotation is: (let ((.cse1 (not (< |old(~waterLevel~0)| 3))) (.cse2 (not (= |old(~pumpRunning~0)| 1))) (.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (or .cse2 .cse0 (not (<= 1 |old(~switchedOnBeforeTS~0)|)) .cse1) (or .cse2 (not (= |old(~waterLevel~0)| 2)) .cse0))) [2021-11-23 03:35:54,940 INFO L854 garLoopResultBuilder]: At program point L776(line 776) the Hoare annotation is: (let ((.cse9 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse3 (and .cse9 (= ~pumpRunning~0 1))) (.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (and (= ~pumpRunning~0 0) .cse9)) (.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse2 (= 0 ~systemActive~0)) (.cse8 (<= 1 ~switchedOnBeforeTS~0)) (.cse6 (not (<= 1 |old(~switchedOnBeforeTS~0)|))) (.cse7 (not (< |old(~waterLevel~0)| 3)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse1 .cse2) (or .cse0 .cse2 .cse3 .cse6 .cse7) (or .cse4 .cse2 .cse8 .cse6 .cse7) (or (not (<= |old(~waterLevel~0)| 1)) .cse4 .cse5 .cse2) (or .cse0 .cse2 .cse8 .cse6 .cse7)))) [2021-11-23 03:35:54,941 INFO L854 garLoopResultBuilder]: At program point L776-1(line 776) the Hoare annotation is: (let ((.cse2 (not (= |old(~pumpRunning~0)| 1))) (.cse0 (<= 1 |timeShift___utac_acc__Specification5_spec__2_#t~ret46#1|)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (= 0 ~systemActive~0))) (and (or (and .cse0 .cse1 (= ~pumpRunning~0 1)) .cse2 (not (= |old(~waterLevel~0)| 2)) .cse3) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse1) .cse3 (not (< |old(~waterLevel~0)| 3))) (or (not (<= |old(~waterLevel~0)| 1)) .cse2 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1) .cse3 (not (<= 1 |old(~switchedOnBeforeTS~0)|))))) [2021-11-23 03:35:54,941 INFO L854 garLoopResultBuilder]: At program point L537(line 537) the Hoare annotation is: (let ((.cse1 (not (< |old(~waterLevel~0)| 3))) (.cse2 (not (= |old(~pumpRunning~0)| 1))) (.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse0 .cse1) (or .cse2 .cse0 (not (<= 1 |old(~switchedOnBeforeTS~0)|)) .cse1) (or .cse2 (not (= |old(~waterLevel~0)| 2)) .cse0))) [2021-11-23 03:35:54,941 INFO L858 garLoopResultBuilder]: For program point L793(lines 793 803) no Hoare annotation was computed. [2021-11-23 03:35:54,941 INFO L854 garLoopResultBuilder]: At program point L537-1(lines 518 542) the Hoare annotation is: (let ((.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse7 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= ~pumpRunning~0 1)) (.cse2 (= ~pumpRunning~0 0)) (.cse5 (<= 1 ~switchedOnBeforeTS~0)) (.cse6 (or (= |timeShift_processEnvironment_~tmp~5#1| 0) (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (.cse3 (= 0 ~systemActive~0))) (and (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (not (= |old(~pumpRunning~0)| 0)) (and .cse2 .cse0) .cse3 (not (< |old(~waterLevel~0)| 3))) (let ((.cse4 (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)))) (or (not (<= |old(~waterLevel~0)| 1)) (and .cse2 (or .cse4 (and (<= |old(~waterLevel~0)| 0) .cse0)) .cse5 .cse6) .cse7 .cse3 (and (<= ~waterLevel~0 0) (or .cse4 .cse0) .cse5 .cse6 .cse1) (not (<= 1 |old(~switchedOnBeforeTS~0)|)))) (let ((.cse8 (= ~waterLevel~0 1))) (or .cse7 (and .cse8 .cse5 .cse6 .cse1) (and .cse2 .cse8 .cse5 .cse6) (not (= |old(~waterLevel~0)| 2)) .cse3)))) [2021-11-23 03:35:54,942 INFO L858 garLoopResultBuilder]: For program point L789(lines 789 806) no Hoare annotation was computed. [2021-11-23 03:35:54,942 INFO L858 garLoopResultBuilder]: For program point L438-2(lines 434 456) no Hoare annotation was computed. [2021-11-23 03:35:54,942 INFO L854 garLoopResultBuilder]: At program point L789-1(lines 781 809) the Hoare annotation is: (let ((.cse3 (= 0 ~systemActive~0))) (let ((.cse4 (= ~pumpRunning~0 1)) (.cse12 (not (= |old(~pumpRunning~0)| 1))) (.cse9 (<= 1 ~switchedOnBeforeTS~0)) (.cse11 (or (= |timeShift_processEnvironment_~tmp~5#1| 0) (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse5 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse8 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~9#1| ~waterLevel~0)) (.cse7 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse10 (not .cse3))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (let ((.cse6 (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)))) (or .cse5 (and .cse1 (or .cse6 (and (<= |old(~waterLevel~0)| 0) .cse7)) .cse8 .cse9 .cse10 .cse11) .cse12 (and (<= ~waterLevel~0 0) .cse8 (or .cse6 .cse7) .cse9 .cse11 .cse4) .cse3 (not (<= 1 |old(~switchedOnBeforeTS~0)|)))) (let ((.cse13 (= ~waterLevel~0 1))) (or (and .cse1 .cse8 .cse13 .cse9 .cse10 .cse11) .cse12 .cse2 .cse3 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse8 .cse13 .cse9 .cse11))) (or (and .cse7 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~9#1| 2)) .cse0 .cse2 .cse3) (or .cse5 .cse0 .cse3 (and .cse1 .cse8 .cse7 .cse10))))) [2021-11-23 03:35:54,942 INFO L858 garLoopResultBuilder]: For program point L794(lines 794 800) no Hoare annotation was computed. [2021-11-23 03:35:54,943 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 431 457) the Hoare annotation is: (let ((.cse9 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse3 (and .cse9 (= ~pumpRunning~0 1))) (.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (and (= ~pumpRunning~0 0) .cse9)) (.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse2 (= 0 ~systemActive~0)) (.cse8 (<= 1 ~switchedOnBeforeTS~0)) (.cse6 (not (<= 1 |old(~switchedOnBeforeTS~0)|))) (.cse7 (not (< |old(~waterLevel~0)| 3)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse1 .cse2) (or .cse0 .cse2 .cse3 .cse6 .cse7) (or .cse4 .cse2 .cse8 .cse6 .cse7) (or (not (<= |old(~waterLevel~0)| 1)) .cse4 .cse5 .cse2) (or .cse0 .cse2 .cse8 .cse6 .cse7)))) [2021-11-23 03:35:54,943 INFO L858 garLoopResultBuilder]: For program point L526(lines 526 534) no Hoare annotation was computed. [2021-11-23 03:35:54,943 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 431 457) no Hoare annotation was computed. [2021-11-23 03:35:54,943 INFO L854 garLoopResultBuilder]: At program point L522(lines 522 539) the Hoare annotation is: (let ((.cse2 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (<= 1 ~switchedOnBeforeTS~0)) (.cse4 (= ~pumpRunning~0 1))) (and (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse0) .cse1 (not (< |old(~waterLevel~0)| 3))) (or .cse2 (and (= ~waterLevel~0 1) .cse3 .cse4) (not (= |old(~waterLevel~0)| 2)) .cse1) (or (not (<= |old(~waterLevel~0)| 1)) .cse2 .cse1 (and (<= ~waterLevel~0 0) (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) .cse0) .cse3 .cse4) (not (<= 1 |old(~switchedOnBeforeTS~0)|))))) [2021-11-23 03:35:54,943 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 912) no Hoare annotation was computed. [2021-11-23 03:35:54,944 INFO L854 garLoopResultBuilder]: At program point L894(lines 894 901) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~10#1| ~systemActive~0) (= ~waterLevel~0 1) (= |ULTIMATE.start_main_~tmp~10#1| 1)) [2021-11-23 03:35:54,944 INFO L861 garLoopResultBuilder]: At program point L894-2(lines 894 901) the Hoare annotation is: true [2021-11-23 03:35:54,944 INFO L858 garLoopResultBuilder]: For program point L725(lines 725 731) no Hoare annotation was computed. [2021-11-23 03:35:54,944 INFO L858 garLoopResultBuilder]: For program point L725-1(lines 725 731) no Hoare annotation was computed. [2021-11-23 03:35:54,944 INFO L861 garLoopResultBuilder]: At program point L754(lines 695 758) the Hoare annotation is: true [2021-11-23 03:35:54,944 INFO L854 garLoopResultBuilder]: At program point L717(line 717) the Hoare annotation is: (let ((.cse2 (< ~waterLevel~0 3)) (.cse0 (= |ULTIMATE.start_main_~tmp~10#1| ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~10#1| 1)) (.cse4 (= ~pumpRunning~0 1))) (or (and .cse0 .cse1 (<= 1 ~switchedOnBeforeTS~0) .cse2 .cse3 .cse4) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse3 .cse4))) [2021-11-23 03:35:54,945 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 03:35:54,945 INFO L854 garLoopResultBuilder]: At program point L751(lines 704 752) the Hoare annotation is: false [2021-11-23 03:35:54,945 INFO L858 garLoopResultBuilder]: For program point L706(lines 705 750) no Hoare annotation was computed. [2021-11-23 03:35:54,945 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:35:54,945 INFO L854 garLoopResultBuilder]: At program point L727(line 727) the Hoare annotation is: (let ((.cse2 (< ~waterLevel~0 3)) (.cse0 (= |ULTIMATE.start_main_~tmp~10#1| ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~10#1| 1)) (.cse4 (= ~pumpRunning~0 1))) (or (and .cse0 .cse1 (<= 1 ~switchedOnBeforeTS~0) .cse2 .cse3 .cse4) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse3 .cse4))) [2021-11-23 03:35:54,946 INFO L854 garLoopResultBuilder]: At program point L748(lines 705 750) the Hoare annotation is: (let ((.cse2 (< ~waterLevel~0 3)) (.cse0 (= |ULTIMATE.start_main_~tmp~10#1| ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~10#1| 1)) (.cse4 (= ~pumpRunning~0 1))) (or (and .cse0 .cse1 (<= 1 ~switchedOnBeforeTS~0) .cse2 .cse3 .cse4) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse3 .cse4))) [2021-11-23 03:35:54,946 INFO L858 garLoopResultBuilder]: For program point L715(lines 715 721) no Hoare annotation was computed. [2021-11-23 03:35:54,946 INFO L858 garLoopResultBuilder]: For program point L715-1(lines 715 721) no Hoare annotation was computed. [2021-11-23 03:35:54,946 INFO L854 garLoopResultBuilder]: At program point L741-2(lines 735 746) the Hoare annotation is: (let ((.cse2 (< ~waterLevel~0 3)) (.cse0 (= |ULTIMATE.start_main_~tmp~10#1| ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~10#1| 1)) (.cse4 (= ~pumpRunning~0 1))) (or (and .cse0 .cse1 (<= 1 ~switchedOnBeforeTS~0) .cse2 .cse3 .cse4) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse3 .cse4))) [2021-11-23 03:35:54,946 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 466 490) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 1 ~switchedOnBeforeTS~0))) (.cse3 (= ~pumpRunning~0 1))) (and (or (not (<= ~waterLevel~0 0)) .cse0 .cse1 .cse2 .cse3) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse1 (not (< ~waterLevel~0 3))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3))) [2021-11-23 03:35:54,947 INFO L854 garLoopResultBuilder]: At program point L480(line 480) the Hoare annotation is: (let ((.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (= ~pumpRunning~0 0)) (.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 1 ~switchedOnBeforeTS~0)))) (and (or (not (<= ~waterLevel~0 0)) .cse0 .cse1 .cse2) (or .cse3 .cse4 (not (= 2 ~waterLevel~0)) .cse1) (or .cse3 (and .cse4 (= |processEnvironment__wrappee__highWaterSensor_~tmp~3#1| 0)) (not (<= ~waterLevel~0 1)) .cse1) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2))) [2021-11-23 03:35:54,947 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 466 490) no Hoare annotation was computed. [2021-11-23 03:35:54,947 INFO L854 garLoopResultBuilder]: At program point L474(lines 474 482) the Hoare annotation is: (let ((.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (= ~pumpRunning~0 0)) (.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 1 ~switchedOnBeforeTS~0)))) (and (or (not (<= ~waterLevel~0 0)) .cse0 .cse1 .cse2) (or .cse3 .cse4 (not (= 2 ~waterLevel~0)) .cse1) (or .cse3 (and .cse4 (= |processEnvironment__wrappee__highWaterSensor_~tmp~3#1| 0)) (not (<= ~waterLevel~0 1)) .cse1) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2))) [2021-11-23 03:35:54,947 INFO L854 garLoopResultBuilder]: At program point L470(lines 470 487) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 1 ~switchedOnBeforeTS~0))) (.cse3 (= ~pumpRunning~0 1))) (and (or (not (<= ~waterLevel~0 0)) .cse0 .cse1 .cse2 .cse3) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse1 (not (< ~waterLevel~0 3))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3))) [2021-11-23 03:35:54,947 INFO L854 garLoopResultBuilder]: At program point L485(line 485) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 1 ~switchedOnBeforeTS~0))) (.cse3 (= ~pumpRunning~0 1))) (and (or (not (<= ~waterLevel~0 0)) .cse0 .cse1 .cse2 .cse3) (or (not (= |old(~pumpRunning~0)| 0)) .cse1 (not (< ~waterLevel~0 3))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3))) [2021-11-23 03:35:54,948 INFO L858 garLoopResultBuilder]: For program point L485-1(lines 466 490) no Hoare annotation was computed. [2021-11-23 03:35:54,948 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 931 942) no Hoare annotation was computed. [2021-11-23 03:35:54,948 INFO L854 garLoopResultBuilder]: At program point waterRiseENTRY(lines 931 942) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 1))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 (not (= |old(~waterLevel~0)| 2)) .cse1 .cse2) (or (not (= ~pumpRunning~0 0)) .cse1 .cse2 (not (<= |old(~waterLevel~0)| 2))) (or .cse0 .cse1 .cse2 (not (<= 1 ~switchedOnBeforeTS~0)) (not (< |old(~waterLevel~0)| 3))))) [2021-11-23 03:35:54,948 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__lowWaterSensorENTRY(lines 492 516) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 1 ~switchedOnBeforeTS~0))) (.cse3 (= ~pumpRunning~0 1))) (and (or (not (<= ~waterLevel~0 0)) .cse0 .cse1 .cse2 .cse3) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse1 (not (< ~waterLevel~0 3))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3))) [2021-11-23 03:35:54,948 INFO L854 garLoopResultBuilder]: At program point L506(line 506) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 1 ~switchedOnBeforeTS~0))) (.cse3 (= ~pumpRunning~0 1))) (and (or (not (<= ~waterLevel~0 0)) .cse0 .cse1 .cse2 .cse3) (or (not (= |old(~pumpRunning~0)| 0)) .cse1 (not (< ~waterLevel~0 3))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3))) [2021-11-23 03:35:54,949 INFO L854 garLoopResultBuilder]: At program point L502(line 502) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 1 ~switchedOnBeforeTS~0))) (.cse3 (= ~pumpRunning~0 1))) (and (or (not (<= ~waterLevel~0 0)) .cse0 .cse1 .cse2 .cse3) (or (not (= |old(~pumpRunning~0)| 0)) .cse1 (not (< ~waterLevel~0 3))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3))) [2021-11-23 03:35:54,949 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 508) no Hoare annotation was computed. [2021-11-23 03:35:54,949 INFO L854 garLoopResultBuilder]: At program point L496(lines 496 513) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 1 ~switchedOnBeforeTS~0))) (.cse3 (= ~pumpRunning~0 1))) (and (or (not (<= ~waterLevel~0 0)) .cse0 .cse1 .cse2 .cse3) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse1 (not (< ~waterLevel~0 3))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3))) [2021-11-23 03:35:54,949 INFO L854 garLoopResultBuilder]: At program point L511(line 511) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 1 ~switchedOnBeforeTS~0)))) (and (or (not (<= ~waterLevel~0 0)) .cse0 .cse1 .cse2) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse1 (not (< ~waterLevel~0 3))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2))) [2021-11-23 03:35:54,949 INFO L858 garLoopResultBuilder]: For program point L511-1(lines 492 516) no Hoare annotation was computed. [2021-11-23 03:35:54,950 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__lowWaterSensorEXIT(lines 492 516) no Hoare annotation was computed. [2021-11-23 03:35:54,950 INFO L858 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 570 578) no Hoare annotation was computed. [2021-11-23 03:35:54,950 INFO L861 garLoopResultBuilder]: At program point isPumpRunningENTRY(lines 570 578) the Hoare annotation is: true [2021-11-23 03:35:54,953 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:54,955 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:35:54,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:35:54 BoogieIcfgContainer [2021-11-23 03:35:54,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:35:54,997 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:35:54,997 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:35:54,997 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:35:54,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:42" (3/4) ... [2021-11-23 03:35:55,001 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:35:55,007 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2021-11-23 03:35:55,007 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-11-23 03:35:55,008 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-11-23 03:35:55,008 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-11-23 03:35:55,008 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-11-23 03:35:55,008 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:35:55,009 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-11-23 03:35:55,009 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__lowWaterSensor [2021-11-23 03:35:55,009 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2021-11-23 03:35:55,020 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 82 nodes and edges [2021-11-23 03:35:55,021 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2021-11-23 03:35:55,021 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-23 03:35:55,022 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 03:35:55,023 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 03:35:55,024 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:35:55,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:35:55,053 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((1 <= aux-isPumpRunning()-aux && \old(waterLevel) == waterLevel) && pumpRunning == 1) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) < 3))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 1)) || ((pumpRunning == \old(pumpRunning) && 1 <= aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(1 <= \old(switchedOnBeforeTS))) [2021-11-23 03:35:55,054 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((2 == waterLevel && \old(waterLevel) == waterLevel) && pumpRunning == 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) < 3)) && (((((!(\old(waterLevel) <= 1) || (((pumpRunning == 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical))) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || ((((waterLevel <= 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || \old(waterLevel) == waterLevel)) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)) && pumpRunning == 1)) || !(1 <= \old(switchedOnBeforeTS)))) && ((((!(\old(pumpRunning) == 1) || (((waterLevel == 1 && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)) && pumpRunning == 1)) || (((pumpRunning == 0 && waterLevel == 1) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical))) || !(\old(waterLevel) == 2)) || 0 == systemActive) [2021-11-23 03:35:55,055 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) == 2)) || 0 == systemActive) || pumpRunning == 1) && (((((!(\old(waterLevel) <= 1) || (((((pumpRunning == 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && tmp == waterLevel) && 1 <= switchedOnBeforeTS) && !(0 == systemActive)) && (tmp == 0 || tmp == methaneLevelCritical))) || !(\old(pumpRunning) == 1)) || (((((waterLevel <= 0 && tmp == waterLevel) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || \old(waterLevel) == waterLevel)) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)) && pumpRunning == 1)) || 0 == systemActive) || !(1 <= \old(switchedOnBeforeTS)))) && (((((((((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1) && 1 <= switchedOnBeforeTS) && !(0 == systemActive)) && (tmp == 0 || tmp == methaneLevelCritical)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) || ((((pumpRunning == \old(pumpRunning) && tmp == waterLevel) && waterLevel == 1) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)))) && ((((\old(waterLevel) == waterLevel && tmp == 2) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || 0 == systemActive) || (((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel) && !(0 == systemActive))) [2021-11-23 03:35:55,055 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) < 3)) && (((!(\old(pumpRunning) == 1) || ((waterLevel == 1 && 1 <= switchedOnBeforeTS) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || (((waterLevel <= 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || \old(waterLevel) == waterLevel)) && 1 <= switchedOnBeforeTS) && pumpRunning == 1)) || !(1 <= \old(switchedOnBeforeTS))) [2021-11-23 03:35:55,056 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || 0 == systemActive) || !(\old(waterLevel) < 3)) && (((!(\old(pumpRunning) == 1) || 0 == systemActive) || !(1 <= \old(switchedOnBeforeTS))) || !(\old(waterLevel) < 3))) && ((!(\old(pumpRunning) == 1) || !(\old(waterLevel) == 2)) || 0 == systemActive) [2021-11-23 03:35:55,056 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((2 == waterLevel && \old(waterLevel) == waterLevel) && pumpRunning == 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) < 3)) && (((((!(\old(waterLevel) <= 1) || (((pumpRunning == 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical))) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || ((((waterLevel <= 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || \old(waterLevel) == waterLevel)) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)) && pumpRunning == 1)) || !(1 <= \old(switchedOnBeforeTS)))) && ((((!(\old(pumpRunning) == 1) || (((waterLevel == 1 && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)) && pumpRunning == 1)) || (((pumpRunning == 0 && waterLevel == 1) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical))) || !(\old(waterLevel) == 2)) || 0 == systemActive) [2021-11-23 03:35:55,056 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(waterLevel <= 0) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) || pumpRunning == 1) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(waterLevel < 3))) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) || pumpRunning == 1) [2021-11-23 03:35:55,057 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(waterLevel <= 0) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) || pumpRunning == 1) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(waterLevel < 3))) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) || pumpRunning == 1) [2021-11-23 03:35:55,058 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(waterLevel <= 0) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(2 == waterLevel)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && tmp == 0)) || !(waterLevel <= 1)) || 0 == systemActive)) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) [2021-11-23 03:35:55,096 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:35:55,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:35:55,097 INFO L158 Benchmark]: Toolchain (without parser) took 73650.68ms. Allocated memory was 104.9MB in the beginning and 796.9MB in the end (delta: 692.1MB). Free memory was 61.5MB in the beginning and 406.5MB in the end (delta: -345.0MB). Peak memory consumption was 347.1MB. Max. memory is 16.1GB. [2021-11-23 03:35:55,097 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 104.9MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:35:55,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.51ms. Allocated memory is still 104.9MB. Free memory was 61.3MB in the beginning and 69.3MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:35:55,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.45ms. Allocated memory is still 104.9MB. Free memory was 69.3MB in the beginning and 66.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:35:55,098 INFO L158 Benchmark]: Boogie Preprocessor took 36.40ms. Allocated memory is still 104.9MB. Free memory was 66.5MB in the beginning and 65.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:35:55,099 INFO L158 Benchmark]: RCFGBuilder took 873.48ms. Allocated memory is still 104.9MB. Free memory was 65.0MB in the beginning and 41.6MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-23 03:35:55,099 INFO L158 Benchmark]: TraceAbstraction took 72033.60ms. Allocated memory was 104.9MB in the beginning and 796.9MB in the end (delta: 692.1MB). Free memory was 41.0MB in the beginning and 413.8MB in the end (delta: -372.8MB). Peak memory consumption was 459.1MB. Max. memory is 16.1GB. [2021-11-23 03:35:55,100 INFO L158 Benchmark]: Witness Printer took 99.55ms. Allocated memory is still 796.9MB. Free memory was 413.8MB in the beginning and 406.5MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:35:55,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 104.9MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 539.51ms. Allocated memory is still 104.9MB. Free memory was 61.3MB in the beginning and 69.3MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.45ms. Allocated memory is still 104.9MB. Free memory was 69.3MB in the beginning and 66.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.40ms. Allocated memory is still 104.9MB. Free memory was 66.5MB in the beginning and 65.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 873.48ms. Allocated memory is still 104.9MB. Free memory was 65.0MB in the beginning and 41.6MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 72033.60ms. Allocated memory was 104.9MB in the beginning and 796.9MB in the end (delta: 692.1MB). Free memory was 41.0MB in the beginning and 413.8MB in the end (delta: -372.8MB). Peak memory consumption was 459.1MB. Max. memory is 16.1GB. * Witness Printer took 99.55ms. Allocated memory is still 796.9MB. Free memory was 413.8MB in the beginning and 406.5MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. 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: 912]: 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 10 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 71.9s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2929 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2905 mSDsluCounter, 3387 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2988 mSDsCounter, 1951 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4992 IncrementalHoareTripleChecker+Invalid, 6943 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1951 mSolverCounterUnsat, 958 mSDtfsCounter, 4992 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1040 GetRequests, 729 SyntacticMatches, 27 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8254 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=730occurred in iteration=10, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 441 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 2176 PreInvPairs, 2544 NumberOfFragments, 2388 HoareAnnotationTreeSize, 2176 FomulaSimplifications, 8282 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 41 FomulaSimplificationsInter, 54406 FormulaSimplificationTreeSizeReductionInter, 9.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 849 NumberOfCodeBlocks, 849 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2986 SizeOfPredicates, 25 NumberOfNonLiveVariables, 1591 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 549/630 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: 518]: Loop Invariant Derived loop invariant: (((((((2 == waterLevel && \old(waterLevel) == waterLevel) && pumpRunning == 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) < 3)) && (((((!(\old(waterLevel) <= 1) || (((pumpRunning == 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical))) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || ((((waterLevel <= 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || \old(waterLevel) == waterLevel)) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)) && pumpRunning == 1)) || !(1 <= \old(switchedOnBeforeTS)))) && ((((!(\old(pumpRunning) == 1) || (((waterLevel == 1 && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)) && pumpRunning == 1)) || (((pumpRunning == 0 && waterLevel == 1) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical))) || !(\old(waterLevel) == 2)) || 0 == systemActive) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 812]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 695]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 705]: Loop Invariant Derived loop invariant: ((((((tmp == systemActive && splverifierCounter == 0) && 1 <= switchedOnBeforeTS) && waterLevel < 3) && tmp == 1) && pumpRunning == 1) || ((((pumpRunning == 0 && tmp == systemActive) && splverifierCounter == 0) && waterLevel < 3) && tmp == 1)) || ((((2 == waterLevel && tmp == systemActive) && splverifierCounter == 0) && tmp == 1) && pumpRunning == 1) - InvariantResult [Line: 445]: Loop Invariant Derived loop invariant: (((((((2 == waterLevel && \old(waterLevel) == waterLevel) && pumpRunning == 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) < 3)) && (((((!(\old(waterLevel) <= 1) || (((pumpRunning == 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical))) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || ((((waterLevel <= 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || \old(waterLevel) == waterLevel)) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)) && pumpRunning == 1)) || !(1 <= \old(switchedOnBeforeTS)))) && ((((!(\old(pumpRunning) == 1) || (((waterLevel == 1 && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)) && pumpRunning == 1)) || (((pumpRunning == 0 && waterLevel == 1) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical))) || !(\old(waterLevel) == 2)) || 0 == systemActive) - InvariantResult [Line: 704]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 496]: Loop Invariant Derived loop invariant: (((((!(waterLevel <= 0) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) || pumpRunning == 1) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(waterLevel < 3))) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) || pumpRunning == 1) - InvariantResult [Line: 781]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) == 2)) || 0 == systemActive) || pumpRunning == 1) && (((((!(\old(waterLevel) <= 1) || (((((pumpRunning == 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) && tmp == waterLevel) && 1 <= switchedOnBeforeTS) && !(0 == systemActive)) && (tmp == 0 || tmp == methaneLevelCritical))) || !(\old(pumpRunning) == 1)) || (((((waterLevel <= 0 && tmp == waterLevel) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || \old(waterLevel) == waterLevel)) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)) && pumpRunning == 1)) || 0 == systemActive) || !(1 <= \old(switchedOnBeforeTS)))) && (((((((((pumpRunning == 0 && tmp == waterLevel) && waterLevel == 1) && 1 <= switchedOnBeforeTS) && !(0 == systemActive)) && (tmp == 0 || tmp == methaneLevelCritical)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) || ((((pumpRunning == \old(pumpRunning) && tmp == waterLevel) && waterLevel == 1) && 1 <= switchedOnBeforeTS) && (tmp == 0 || tmp == methaneLevelCritical)))) && ((((\old(waterLevel) == waterLevel && tmp == 2) || !(\old(pumpRunning) == 0)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || 0 == systemActive) || (((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel) && !(0 == systemActive))) - InvariantResult [Line: 912]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || 0 == systemActive) || !(\old(waterLevel) < 3)) && (((!(\old(pumpRunning) == 1) || 0 == systemActive) || !(1 <= \old(switchedOnBeforeTS))) || !(\old(waterLevel) < 3))) && ((!(\old(pumpRunning) == 1) || !(\old(waterLevel) == 2)) || 0 == systemActive) - InvariantResult [Line: 776]: Loop Invariant Derived loop invariant: ((((((1 <= aux-isPumpRunning()-aux && \old(waterLevel) == waterLevel) && pumpRunning == 1) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) < 3))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 1)) || ((pumpRunning == \old(pumpRunning) && 1 <= aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(1 <= \old(switchedOnBeforeTS))) - InvariantResult [Line: 470]: Loop Invariant Derived loop invariant: (((((!(waterLevel <= 0) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) || pumpRunning == 1) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(waterLevel < 3))) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) || pumpRunning == 1) - InvariantResult [Line: 822]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 894]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 522]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) < 3)) && (((!(\old(pumpRunning) == 1) || ((waterLevel == 1 && 1 <= switchedOnBeforeTS) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || (((waterLevel <= 0 && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || \old(waterLevel) == waterLevel)) && 1 <= switchedOnBeforeTS) && pumpRunning == 1)) || !(1 <= \old(switchedOnBeforeTS))) - InvariantResult [Line: 894]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == systemActive) && waterLevel == 1) && tmp == 1 - InvariantResult [Line: 474]: Loop Invariant Derived loop invariant: (((((!(waterLevel <= 0) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(2 == waterLevel)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && tmp == 0)) || !(waterLevel <= 1)) || 0 == systemActive)) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(1 <= switchedOnBeforeTS)) RESULT: Ultimate proved your program to be correct! [2021-11-23 03:35:55,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67ab18b9-14a7-42af-9a22-b81191e0f0d6/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