./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c9c699b8f4baa8342fdac40487e4f330549e95c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:16:15,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:16:15,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:16:16,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:16:16,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:16:16,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:16:16,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:16:16,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:16:16,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:16:16,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:16:16,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:16:16,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:16:16,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:16:16,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:16:16,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:16:16,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:16:16,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:16:16,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:16:16,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:16:16,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:16:16,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:16:16,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:16:16,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:16:16,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:16:16,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:16:16,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:16:16,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:16:16,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:16:16,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:16:16,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:16:16,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:16:16,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:16:16,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:16:16,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:16:16,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:16:16,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:16:16,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:16:16,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:16:16,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:16:16,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:16:16,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:16:16,075 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-13 00:16:16,101 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:16:16,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:16:16,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:16:16,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:16:16,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:16:16,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:16:16,108 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:16:16,109 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:16:16,109 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:16:16,109 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:16:16,110 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:16:16,110 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:16:16,110 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:16:16,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:16:16,111 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:16:16,111 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:16:16,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:16:16,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:16:16,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:16:16,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:16:16,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:16:16,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:16:16,114 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:16:16,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:16:16,115 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:16:16,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:16:16,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:16:16,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:16:16,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:16:16,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:16:16,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:16:16,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:16:16,118 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:16:16,119 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c9c699b8f4baa8342fdac40487e4f330549e95c [2021-10-13 00:16:16,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:16:16,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:16:16,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:16:16,419 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:16:16,420 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:16:16,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c [2021-10-13 00:16:16,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/data/3879142c8/3435cba08d1f4dd4910f39b2e1dfc819/FLAGdb1894fee [2021-10-13 00:16:17,046 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:16:17,047 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c [2021-10-13 00:16:17,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/data/3879142c8/3435cba08d1f4dd4910f39b2e1dfc819/FLAGdb1894fee [2021-10-13 00:16:17,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/data/3879142c8/3435cba08d1f4dd4910f39b2e1dfc819 [2021-10-13 00:16:17,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:16:17,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:16:17,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:16:17,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:16:17,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:16:17,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:17,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aedb4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17, skipping insertion in model container [2021-10-13 00:16:17,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:17,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:16:17,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:16:17,676 WARN L228 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_0a225a8a-95ea-4895-811c-c49026f1b8d0/sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c[13664,13677] [2021-10-13 00:16:17,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:16:17,709 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:16:17,770 WARN L228 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_0a225a8a-95ea-4895-811c-c49026f1b8d0/sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c[13664,13677] [2021-10-13 00:16:17,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:16:17,802 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:16:17,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17 WrapperNode [2021-10-13 00:16:17,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:16:17,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:16:17,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:16:17,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:16:17,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:17,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:17,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:16:17,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:16:17,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:16:17,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:16:17,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:17,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:17,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:17,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:17,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:17,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:17,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:18,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:16:18,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:16:18,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:16:18,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:16:18,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17" (1/1) ... [2021-10-13 00:16:18,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:16:18,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:16:18,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:16:18,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:16:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:16:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:16:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:16:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:16:18,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:16:18,860 INFO L299 CfgBuilder]: Removed 102 assume(true) statements. [2021-10-13 00:16:18,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:16:18 BoogieIcfgContainer [2021-10-13 00:16:18,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:16:18,864 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:16:18,864 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:16:18,871 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:16:18,872 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:16:18,873 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:16:17" (1/3) ... [2021-10-13 00:16:18,874 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5db0a925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:16:18, skipping insertion in model container [2021-10-13 00:16:18,874 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:16:18,875 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:17" (2/3) ... [2021-10-13 00:16:18,875 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5db0a925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:16:18, skipping insertion in model container [2021-10-13 00:16:18,875 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:16:18,876 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:16:18" (3/3) ... [2021-10-13 00:16:18,877 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product33.cil.c [2021-10-13 00:16:18,928 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:16:18,929 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:16:18,929 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:16:18,929 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:16:18,929 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:16:18,929 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:16:18,930 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:16:18,930 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:16:18,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 81 states, 80 states have (on average 1.5375) internal successors, (123), 80 states have internal predecessors, (123), 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) [2021-10-13 00:16:18,975 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-13 00:16:18,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:16:18,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:16:18,984 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:16:18,984 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:16:18,984 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:16:18,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 81 states, 80 states have (on average 1.5375) internal successors, (123), 80 states have internal predecessors, (123), 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) [2021-10-13 00:16:18,992 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-13 00:16:18,993 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:16:18,993 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:16:18,994 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:16:18,994 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:16:19,000 INFO L791 eck$LassoCheckResult]: Stem: 61#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 47#L-1true havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 7#L897true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 63#L905true main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 16#L231true assume 0 != main_~tmp~0; 49#L204true havoc test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 27#L856-1true [2021-10-13 00:16:19,001 INFO L793 eck$LassoCheckResult]: Loop: 27#L856-1true assume !false; 5#L631true assume test_~splverifierCounter~0 < 4; 34#L632true test_~tmp~4 := test_#t~nondet53;havoc test_#t~nondet53; 40#L640true assume !(0 != test_~tmp~4); 81#L640-1true test_~tmp___0~0 := test_#t~nondet54;havoc test_#t~nondet54; 38#L650true assume !(0 != test_~tmp___0~0); 14#L650-1true test_~tmp___2~0 := test_#t~nondet55;havoc test_#t~nondet55; 31#L660true assume 0 != test_~tmp___2~0; 12#L666-2true assume !(0 != ~pumpRunning~0); 55#L696true assume !(0 != ~systemActive~0); 13#L703true havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 53#L92true __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 64#L850true assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 27#L856-1true [2021-10-13 00:16:19,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:19,007 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-13 00:16:19,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:19,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42192720] [2021-10-13 00:16:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:19,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:19,358 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:16:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:19,556 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:16:19,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:19,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1681529867, now seen corresponding path program 1 times [2021-10-13 00:16:19,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:19,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260975248] [2021-10-13 00:16:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:19,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:19,589 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:16:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:19,600 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:16:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:19,605 INFO L82 PathProgramCache]: Analyzing trace with hash 32749071, now seen corresponding path program 1 times [2021-10-13 00:16:19,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:19,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015903290] [2021-10-13 00:16:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:19,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:16:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:16:19,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:16:19,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015903290] [2021-10-13 00:16:19,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015903290] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:16:19,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:16:19,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:16:19,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219615081] [2021-10-13 00:16:19,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:16:20,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:16:20,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:16:20,014 INFO L87 Difference]: Start difference. First operand has 81 states, 80 states have (on average 1.5375) internal successors, (123), 80 states have internal predecessors, (123), 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) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-10-13 00:16:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:16:20,265 INFO L93 Difference]: Finished difference Result 81 states and 112 transitions. [2021-10-13 00:16:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:16:20,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 112 transitions. [2021-10-13 00:16:20,278 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-10-13 00:16:20,289 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 74 states and 105 transitions. [2021-10-13 00:16:20,293 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2021-10-13 00:16:20,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-10-13 00:16:20,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 105 transitions. [2021-10-13 00:16:20,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:16:20,296 INFO L681 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-10-13 00:16:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states and 105 transitions. [2021-10-13 00:16:20,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-13 00:16:20,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 74 states have (on average 1.4189189189189189) internal successors, (105), 73 states have internal predecessors, (105), 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) [2021-10-13 00:16:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2021-10-13 00:16:20,330 INFO L704 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-10-13 00:16:20,330 INFO L587 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-10-13 00:16:20,330 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:16:20,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 105 transitions. [2021-10-13 00:16:20,333 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-10-13 00:16:20,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:16:20,333 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:16:20,334 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:16:20,334 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:16:20,335 INFO L791 eck$LassoCheckResult]: Stem: 249#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 243#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 189#L897 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 190#L905 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 202#L231 assume 0 != main_~tmp~0; 203#L204 havoc test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 221#L856-1 [2021-10-13 00:16:20,335 INFO L793 eck$LassoCheckResult]: Loop: 221#L856-1 assume !false; 182#L631 assume test_~splverifierCounter~0 < 4; 183#L632 test_~tmp~4 := test_#t~nondet53;havoc test_#t~nondet53; 227#L640 assume !(0 != test_~tmp~4); 235#L640-1 test_~tmp___0~0 := test_#t~nondet54;havoc test_#t~nondet54; 231#L650 assume !(0 != test_~tmp___0~0); 200#L650-1 test_~tmp___2~0 := test_#t~nondet55;havoc test_#t~nondet55; 201#L660 assume 0 != test_~tmp___2~0; 197#L666-2 assume !(0 != ~pumpRunning~0); 198#L696 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 245#L728 assume !(0 == ~pumpRunning~0); 195#L703 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 196#L92 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 244#L850 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 221#L856-1 [2021-10-13 00:16:20,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:20,336 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-13 00:16:20,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:20,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096502580] [2021-10-13 00:16:20,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:20,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:20,410 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:16:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:20,478 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:16:20,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:20,479 INFO L82 PathProgramCache]: Analyzing trace with hash -619428466, now seen corresponding path program 1 times [2021-10-13 00:16:20,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:20,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400309432] [2021-10-13 00:16:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:20,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:16:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:16:20,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:16:20,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400309432] [2021-10-13 00:16:20,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400309432] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:16:20,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:16:20,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:16:20,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386924934] [2021-10-13 00:16:20,501 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:16:20,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:16:20,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:16:20,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:16:20,503 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. cyclomatic complexity: 33 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-13 00:16:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:16:20,585 INFO L93 Difference]: Finished difference Result 121 states and 165 transitions. [2021-10-13 00:16:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:16:20,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 165 transitions. [2021-10-13 00:16:20,595 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-13 00:16:20,603 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 121 states and 165 transitions. [2021-10-13 00:16:20,603 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 121 [2021-10-13 00:16:20,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 121 [2021-10-13 00:16:20,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 165 transitions. [2021-10-13 00:16:20,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:16:20,606 INFO L681 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2021-10-13 00:16:20,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 165 transitions. [2021-10-13 00:16:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-10-13 00:16:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 121 states have (on average 1.3636363636363635) internal successors, (165), 120 states have internal predecessors, (165), 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) [2021-10-13 00:16:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 165 transitions. [2021-10-13 00:16:20,616 INFO L704 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2021-10-13 00:16:20,616 INFO L587 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2021-10-13 00:16:20,617 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 00:16:20,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 121 states and 165 transitions. [2021-10-13 00:16:20,619 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-13 00:16:20,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:16:20,620 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:16:20,620 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:16:20,621 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:16:20,621 INFO L791 eck$LassoCheckResult]: Stem: 458#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 449#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 386#L897 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 387#L905 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 402#L231 assume 0 != main_~tmp~0; 403#L204 havoc test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 451#L856-1 [2021-10-13 00:16:20,621 INFO L793 eck$LassoCheckResult]: Loop: 451#L856-1 assume !false; 383#L631 assume test_~splverifierCounter~0 < 4; 384#L632 test_~tmp~4 := test_#t~nondet53;havoc test_#t~nondet53; 495#L640 assume !(0 != test_~tmp~4); 493#L640-1 test_~tmp___0~0 := test_#t~nondet54;havoc test_#t~nondet54; 492#L650 assume !(0 != test_~tmp___0~0); 490#L650-1 test_~tmp___2~0 := test_#t~nondet55;havoc test_#t~nondet55; 425#L660 assume 0 != test_~tmp___2~0; 396#L666-2 assume !(0 != ~pumpRunning~0); 397#L696 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 454#L728 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 459#L132 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 460#L137 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 441#L830 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 442#L830-2 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 407#L836 processEnvironment_#t~ret57 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret57;havoc processEnvironment_#t~ret57; 408#L732 assume !(0 != processEnvironment_~tmp~5); 398#L703 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 399#L92 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 453#L850 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 451#L856-1 [2021-10-13 00:16:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:20,622 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-13 00:16:20,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:20,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064072832] [2021-10-13 00:16:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:20,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:20,698 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:16:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:20,818 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:16:20,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:20,819 INFO L82 PathProgramCache]: Analyzing trace with hash -22033894, now seen corresponding path program 1 times [2021-10-13 00:16:20,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:20,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384411100] [2021-10-13 00:16:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:20,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:20,843 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:16:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:20,860 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:16:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:20,861 INFO L82 PathProgramCache]: Analyzing trace with hash -7321920, now seen corresponding path program 1 times [2021-10-13 00:16:20,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:20,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18812602] [2021-10-13 00:16:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:20,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:16:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:16:20,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:16:20,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18812602] [2021-10-13 00:16:20,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18812602] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:16:20,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:16:20,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:16:20,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060358831] [2021-10-13 00:16:21,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:16:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:16:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:16:21,219 INFO L87 Difference]: Start difference. First operand 121 states and 165 transitions. cyclomatic complexity: 46 Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-10-13 00:16:21,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:16:21,349 INFO L93 Difference]: Finished difference Result 398 states and 547 transitions. [2021-10-13 00:16:21,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:16:21,349 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 547 transitions. [2021-10-13 00:16:21,356 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 291 [2021-10-13 00:16:21,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 398 states and 547 transitions. [2021-10-13 00:16:21,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 398 [2021-10-13 00:16:21,362 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 398 [2021-10-13 00:16:21,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 398 states and 547 transitions. [2021-10-13 00:16:21,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:16:21,369 INFO L681 BuchiCegarLoop]: Abstraction has 398 states and 547 transitions. [2021-10-13 00:16:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 547 transitions. [2021-10-13 00:16:21,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 236. [2021-10-13 00:16:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 236 states have (on average 1.3389830508474576) internal successors, (316), 235 states have internal predecessors, (316), 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) [2021-10-13 00:16:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 316 transitions. [2021-10-13 00:16:21,400 INFO L704 BuchiCegarLoop]: Abstraction has 236 states and 316 transitions. [2021-10-13 00:16:21,400 INFO L587 BuchiCegarLoop]: Abstraction has 236 states and 316 transitions. [2021-10-13 00:16:21,400 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 00:16:21,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 236 states and 316 transitions. [2021-10-13 00:16:21,402 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 168 [2021-10-13 00:16:21,402 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:16:21,402 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:16:21,403 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:16:21,403 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:16:21,403 INFO L791 eck$LassoCheckResult]: Stem: 1003#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 990#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 923#L897 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 924#L905 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 939#L231 assume 0 != main_~tmp~0; 940#L204 havoc test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 959#L856-1 [2021-10-13 00:16:21,404 INFO L793 eck$LassoCheckResult]: Loop: 959#L856-1 assume !false; 920#L631 assume test_~splverifierCounter~0 < 4; 921#L632 test_~tmp~4 := test_#t~nondet53;havoc test_#t~nondet53; 1152#L640 assume !(0 != test_~tmp~4); 1150#L640-1 test_~tmp___0~0 := test_#t~nondet54;havoc test_#t~nondet54; 1149#L650 assume !(0 != test_~tmp___0~0); 1148#L650-1 test_~tmp___2~0 := test_#t~nondet55;havoc test_#t~nondet55; 1147#L660 assume 0 != test_~tmp___2~0; 933#L666-2 assume !(0 != ~pumpRunning~0); 934#L696 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 998#L728 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1046#L132 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1129#L137 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 1127#L830 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 1126#L830-2 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 1125#L836 processEnvironment_#t~ret57 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret57;havoc processEnvironment_#t~ret57; 967#L732 assume !(0 != processEnvironment_~tmp~5); 969#L703 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1081#L92 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 1004#L850 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~7);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1005#L124 __utac_acc__Specification3_spec__1_#t~ret77 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 1015#L856 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 959#L856-1 [2021-10-13 00:16:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:21,404 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-13 00:16:21,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:21,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006321732] [2021-10-13 00:16:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:21,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:21,454 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:16:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:21,499 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:16:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:21,500 INFO L82 PathProgramCache]: Analyzing trace with hash 300270412, now seen corresponding path program 1 times [2021-10-13 00:16:21,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:21,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669042229] [2021-10-13 00:16:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:21,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:21,513 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:16:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:21,523 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:16:21,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:21,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1553575538, now seen corresponding path program 1 times [2021-10-13 00:16:21,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:21,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749794960] [2021-10-13 00:16:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:21,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:21,567 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:16:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:16:21,643 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:17:21,567 WARN L207 SmtUtils]: Spent 59.62 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-13 00:18:20,757 WARN L207 SmtUtils]: Spent 28.41 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-13 00:18:20,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:18:20 BoogieIcfgContainer [2021-10-13 00:18:20,899 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:18:20,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:18:20,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:18:20,900 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:18:20,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:16:18" (3/4) ... [2021-10-13 00:18:20,902 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-13 00:18:20,949 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:18:20,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:18:20,950 INFO L168 Benchmark]: Toolchain (without parser) took 123566.31 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 65.2 MB in the beginning and 96.6 MB in the end (delta: -31.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:18:20,951 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 71.3 MB. Free memory was 47.1 MB in the beginning and 47.0 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:18:20,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.49 ms. Allocated memory is still 94.4 MB. Free memory was 65.1 MB in the beginning and 71.7 MB in the end (delta: -6.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:18:20,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.88 ms. Allocated memory is still 94.4 MB. Free memory was 71.7 MB in the beginning and 68.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:18:20,953 INFO L168 Benchmark]: Boogie Preprocessor took 76.60 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 66.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:18:20,953 INFO L168 Benchmark]: RCFGBuilder took 859.01 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 60.2 MB in the end (delta: 6.4 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:18:20,954 INFO L168 Benchmark]: BuchiAutomizer took 122034.73 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 60.2 MB in the beginning and 99.6 MB in the end (delta: -39.4 MB). Peak memory consumption was 78.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:18:20,954 INFO L168 Benchmark]: Witness Printer took 50.08 ms. Allocated memory is still 138.4 MB. Free memory was 99.6 MB in the beginning and 96.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:18:20,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 71.3 MB. Free memory was 47.1 MB in the beginning and 47.0 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 446.49 ms. Allocated memory is still 94.4 MB. Free memory was 65.1 MB in the beginning and 71.7 MB in the end (delta: -6.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.88 ms. Allocated memory is still 94.4 MB. Free memory was 71.7 MB in the beginning and 68.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.60 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 66.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 859.01 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 60.2 MB in the end (delta: 6.4 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 122034.73 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 60.2 MB in the beginning and 99.6 MB in the end (delta: -39.4 MB). Peak memory consumption was 78.2 MB. Max. memory is 16.1 GB. * Witness Printer took 50.08 ms. Allocated memory is still 138.4 MB. Free memory was 99.6 MB in the beginning and 96.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 236 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 121.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 121.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 60.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 162 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 236 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 367 SDtfs, 803 SDslu, 499 SDs, 0 SdLazy, 72 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 254.1ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 630]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=18096} State at position 1 is {NULL=0, NULL=0, NULL=18107, NULL=0, NULL=18096, NULL=18122, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ac49048=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c33deba=0, NULL=18109, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@263e8e36=0, retValue_acc=1, tmp=0, NULL=0, retValue_acc=0, NULL=18111, tmp___1=0, NULL=0, NULL=18108, NULL=18097, cleanupTimeShifts=4, NULL=18118, NULL=18105, tmp=0, waterLevel=1, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=18114, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, NULL=18112, NULL=0, retValue_acc=1, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d41f32a=0, head=0, tmp=0, NULL=0, NULL=0, NULL=18102, retValue_acc=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@156895f8=0, NULL=0, retValue_acc=0, NULL=18115, NULL=18113, NULL=18100, NULL=18104, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3076027f=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c838574=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58a8eee3=0, NULL=18121, NULL=0, NULL=0, NULL=0, NULL=18123, tmp___0=1, NULL=0, systemActive=1, \result=1, NULL=0, NULL=18119, \result=0, NULL=0, NULL=18117, NULL=0, NULL=18098, NULL=18124, \result=0, NULL=18110, NULL=0, NULL=18120, NULL=18106, tmp___2=71, splverifierCounter=0, NULL=0, \result=0, NULL=18101, NULL=18103, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44db0473=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57d3860a=71, tmp___1=0, NULL=18099, NULL=18116, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L143] int cleanupTimeShifts = 4; [L414] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L688] int pumpRunning = 0; [L689] int systemActive = 1; [L222] int retValue_acc ; [L223] int tmp ; [L901] int retValue_acc ; [L904] retValue_acc = 1 [L905] return (retValue_acc); [L229] tmp = valid_product() [L231] COND TRUE \read(tmp) [L621] int splverifierCounter ; [L622] int tmp ; [L623] int tmp___0 ; [L624] int tmp___1 ; [L625] int tmp___2 ; [L628] splverifierCounter = 0 Loop: [L630] COND TRUE 1 [L632] COND TRUE splverifierCounter < 4 [L638] tmp = __VERIFIER_nondet_int() [L640] COND FALSE !(\read(tmp)) [L648] tmp___0 = __VERIFIER_nondet_int() [L650] COND FALSE !(\read(tmp___0)) [L658] tmp___2 = __VERIFIER_nondet_int() [L660] COND TRUE \read(tmp___2) [L696] COND FALSE !(\read(pumpRunning)) [L703] COND TRUE \read(systemActive) [L725] int tmp ; [L728] COND TRUE ! pumpRunning [L822] int retValue_acc ; [L823] int tmp ; [L824] int tmp___0 ; [L129] int retValue_acc ; [L132] COND TRUE waterLevel < 2 [L133] retValue_acc = 1 [L134] return (retValue_acc); [L828] tmp = isHighWaterSensorDry() [L830] COND TRUE \read(tmp) [L831] tmp___0 = 0 [L835] retValue_acc = tmp___0 [L836] return (retValue_acc); [L730] tmp = isHighWaterLevel() [L732] COND FALSE !(\read(tmp)) [L842] int tmp ; [L843] int tmp___0 ; [L844] int tmp___1 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L848] tmp = isMethaneLevelCritical() [L850] COND FALSE !(\read(tmp)) [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L854] tmp___0 = getWaterLevel() [L856] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-13 00:18:21,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a225a8a-95ea-4895-811c-c49026f1b8d0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...