./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD --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 3cfb2febd3006e73b0e8309478193e665e2e7ddd381dfad7d5652117e74962c4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-28 23:08:16,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:08:16,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:08:16,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:08:16,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:08:16,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:08:16,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:08:16,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:08:16,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:08:16,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:08:16,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:08:16,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:08:16,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:08:16,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:08:16,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:08:16,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:08:16,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:08:16,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:08:16,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:08:16,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:08:16,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:08:16,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:08:16,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:08:16,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:08:16,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:08:16,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:08:16,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:08:16,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:08:16,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:08:16,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:08:16,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:08:16,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:08:16,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:08:16,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:08:16,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:08:16,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:08:16,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:08:16,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:08:16,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:08:16,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:08:16,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:08:16,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:08:16,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:08:16,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:08:16,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:08:16,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:08:16,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:08:16,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:08:16,189 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:08:16,190 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:08:16,190 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:08:16,190 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:08:16,191 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:08:16,191 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:08:16,191 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:08:16,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:08:16,192 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:08:16,192 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:08:16,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:08:16,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:08:16,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:08:16,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:08:16,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:08:16,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:08:16,195 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:08:16,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:08:16,195 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:08:16,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:08:16,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:08:16,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:08:16,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:08:16,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:08:16,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:08:16,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:08:16,199 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:08:16,199 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_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cfb2febd3006e73b0e8309478193e665e2e7ddd381dfad7d5652117e74962c4 [2021-10-28 23:08:16,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:08:16,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:08:16,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:08:16,518 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:08:16,519 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:08:16,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c [2021-10-28 23:08:16,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/data/19f97ce9c/c989bf69ef4f4ef7aaecf0fd43d4164e/FLAGa1bef9d31 [2021-10-28 23:08:17,210 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:08:17,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c [2021-10-28 23:08:17,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/data/19f97ce9c/c989bf69ef4f4ef7aaecf0fd43d4164e/FLAGa1bef9d31 [2021-10-28 23:08:17,481 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/data/19f97ce9c/c989bf69ef4f4ef7aaecf0fd43d4164e [2021-10-28 23:08:17,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:08:17,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:08:17,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:08:17,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:08:17,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:08:17,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:17" (1/1) ... [2021-10-28 23:08:17,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768e4a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:17, skipping insertion in model container [2021-10-28 23:08:17,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:17" (1/1) ... [2021-10-28 23:08:17,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:08:17,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:08:17,903 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_6bccd40a-0724-427e-bee5-f0622187147a/sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c[13989,14002] [2021-10-28 23:08:17,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:08:17,948 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:08:18,007 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_6bccd40a-0724-427e-bee5-f0622187147a/sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c[13989,14002] [2021-10-28 23:08:18,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:08:18,055 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:08:18,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18 WrapperNode [2021-10-28 23:08:18,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:08:18,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:08:18,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:08:18,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:08:18,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18" (1/1) ... [2021-10-28 23:08:18,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18" (1/1) ... [2021-10-28 23:08:18,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:08:18,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:08:18,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:08:18,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:08:18,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18" (1/1) ... [2021-10-28 23:08:18,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18" (1/1) ... [2021-10-28 23:08:18,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18" (1/1) ... [2021-10-28 23:08:18,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18" (1/1) ... [2021-10-28 23:08:18,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18" (1/1) ... [2021-10-28 23:08:18,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18" (1/1) ... [2021-10-28 23:08:18,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18" (1/1) ... [2021-10-28 23:08:18,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:08:18,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:08:18,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:08:18,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:08:18,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18" (1/1) ... [2021-10-28 23:08:18,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:08:18,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:08:18,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:08:18,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:08:18,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:08:18,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:08:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:08:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:08:19,557 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:08:19,558 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2021-10-28 23:08:19,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:19 BoogieIcfgContainer [2021-10-28 23:08:19,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:08:19,561 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:08:19,562 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:08:19,566 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:08:19,566 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:08:19,567 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:08:17" (1/3) ... [2021-10-28 23:08:19,568 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c0ad16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:08:19, skipping insertion in model container [2021-10-28 23:08:19,568 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:08:19,569 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:18" (2/3) ... [2021-10-28 23:08:19,569 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c0ad16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:08:19, skipping insertion in model container [2021-10-28 23:08:19,569 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:08:19,569 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:19" (3/3) ... [2021-10-28 23:08:19,571 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product57.cil.c [2021-10-28 23:08:19,624 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:08:19,624 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:08:19,624 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:08:19,625 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:08:19,625 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:08:19,625 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:08:19,625 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:08:19,625 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:08:19,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 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) [2021-10-28 23:08:19,683 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-10-28 23:08:19,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:08:19,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:08:19,693 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:08:19,694 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:19,694 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:08:19,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 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) [2021-10-28 23:08:19,706 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-10-28 23:08:19,706 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:08:19,706 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:08:19,708 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:08:19,708 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:19,714 INFO L791 eck$LassoCheckResult]: Stem: 122#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 42#L-1true havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 44#L552true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 19#L560true main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 108#L977true assume 0 != main_~tmp~10; 133#L954true havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 33#L582-1true [2021-10-28 23:08:19,715 INFO L793 eck$LassoCheckResult]: Loop: 33#L582-1true assume !false; 81#L841true assume test_~splverifierCounter~0 < 4; 57#L842true test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 124#L850true assume !(0 != test_~tmp~9); 49#L850-1true test_~tmp___0~3 := test_#t~nondet79;havoc test_#t~nondet79; 114#L860true assume !(0 != test_~tmp___0~3); 110#L860-1true test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 87#L870true assume 0 != test_~tmp___2~0; 93#L876-2true assume !(0 != ~pumpRunning~0); 67#L621true assume !(0 != ~systemActive~0); 56#L628true havoc __utac_acc__Specification3_spec__1_#t~ret53, __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 111#L467-2true __utac_acc__Specification3_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret53;havoc __utac_acc__Specification3_spec__1_#t~ret53; 95#L576true assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 33#L582-1true [2021-10-28 23:08:19,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:19,721 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 23:08:19,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:19,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775179000] [2021-10-28 23:08:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:19,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:20,012 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:20,199 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:08:20,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:20,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1679097931, now seen corresponding path program 1 times [2021-10-28 23:08:20,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:20,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157722009] [2021-10-28 23:08:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:20,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:20,236 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:20,272 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:08:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:20,274 INFO L85 PathProgramCache]: Analyzing trace with hash 35181007, now seen corresponding path program 1 times [2021-10-28 23:08:20,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:20,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383553463] [2021-10-28 23:08:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:20,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:20,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:20,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383553463] [2021-10-28 23:08:20,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383553463] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:20,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:20,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:08:20,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167578660] [2021-10-28 23:08:20,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:20,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:08:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:08:20,668 INFO L87 Difference]: Start difference. First operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 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) [2021-10-28 23:08:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:20,893 INFO L93 Difference]: Finished difference Result 138 states and 196 transitions. [2021-10-28 23:08:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:08:20,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 196 transitions. [2021-10-28 23:08:20,900 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-28 23:08:20,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 131 states and 189 transitions. [2021-10-28 23:08:20,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 131 [2021-10-28 23:08:20,909 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 131 [2021-10-28 23:08:20,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 189 transitions. [2021-10-28 23:08:20,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:08:20,911 INFO L681 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-10-28 23:08:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states and 189 transitions. [2021-10-28 23:08:20,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-28 23:08:20,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 131 states have (on average 1.4427480916030535) internal successors, (189), 130 states have internal predecessors, (189), 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) [2021-10-28 23:08:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 189 transitions. [2021-10-28 23:08:20,949 INFO L704 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-10-28 23:08:20,949 INFO L587 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-10-28 23:08:20,949 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:08:20,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states and 189 transitions. [2021-10-28 23:08:20,952 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-28 23:08:20,952 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:08:20,952 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:08:20,953 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:08:20,953 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:20,954 INFO L791 eck$LassoCheckResult]: Stem: 421#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 360#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 361#L552 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 322#L560 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 323#L977 assume 0 != main_~tmp~10; 417#L954 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 347#L582-1 [2021-10-28 23:08:20,954 INFO L793 eck$LassoCheckResult]: Loop: 347#L582-1 assume !false; 348#L841 assume test_~splverifierCounter~0 < 4; 380#L842 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 381#L850 assume !(0 != test_~tmp~9); 338#L850-1 test_~tmp___0~3 := test_#t~nondet79;havoc test_#t~nondet79; 371#L860 assume !(0 != test_~tmp___0~3); 297#L860-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 406#L870 assume 0 != test_~tmp___2~0; 407#L876-2 assume !(0 != ~pumpRunning~0); 319#L621 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 392#L679 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 387#L653-1 assume !(0 == ~pumpRunning~0); 376#L628 havoc __utac_acc__Specification3_spec__1_#t~ret53, __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 378#L467-2 __utac_acc__Specification3_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret53;havoc __utac_acc__Specification3_spec__1_#t~ret53; 411#L576 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 347#L582-1 [2021-10-28 23:08:20,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 23:08:20,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:20,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622116371] [2021-10-28 23:08:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:20,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:21,005 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:21,121 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:08:21,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1986081058, now seen corresponding path program 1 times [2021-10-28 23:08:21,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:21,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113004061] [2021-10-28 23:08:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:21,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:21,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:21,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113004061] [2021-10-28 23:08:21,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113004061] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:21,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:21,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:08:21,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829115603] [2021-10-28 23:08:21,142 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:08:21,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:21,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:08:21,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:08:21,144 INFO L87 Difference]: Start difference. First operand 131 states and 189 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-10-28 23:08:21,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:21,255 INFO L93 Difference]: Finished difference Result 178 states and 246 transitions. [2021-10-28 23:08:21,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:08:21,257 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 246 transitions. [2021-10-28 23:08:21,265 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-10-28 23:08:21,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 178 states and 246 transitions. [2021-10-28 23:08:21,272 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-10-28 23:08:21,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 178 [2021-10-28 23:08:21,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 246 transitions. [2021-10-28 23:08:21,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:08:21,280 INFO L681 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-10-28 23:08:21,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states and 246 transitions. [2021-10-28 23:08:21,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-10-28 23:08:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 178 states have (on average 1.3820224719101124) internal successors, (246), 177 states have internal predecessors, (246), 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) [2021-10-28 23:08:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 246 transitions. [2021-10-28 23:08:21,298 INFO L704 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-10-28 23:08:21,299 INFO L587 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-10-28 23:08:21,299 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:08:21,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 178 states and 246 transitions. [2021-10-28 23:08:21,302 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-10-28 23:08:21,302 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:08:21,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:08:21,304 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:08:21,304 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] [2021-10-28 23:08:21,304 INFO L791 eck$LassoCheckResult]: Stem: 743#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 677#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 678#L552 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 639#L560 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 640#L977 assume 0 != main_~tmp~10; 738#L954 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 664#L582-1 [2021-10-28 23:08:21,305 INFO L793 eck$LassoCheckResult]: Loop: 664#L582-1 assume !false; 665#L841 assume test_~splverifierCounter~0 < 4; 722#L842 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 744#L850 assume !(0 != test_~tmp~9); 655#L850-1 test_~tmp___0~3 := test_#t~nondet79;havoc test_#t~nondet79; 689#L860 assume !(0 != test_~tmp___0~3); 613#L860-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 728#L870 assume 0 != test_~tmp___2~0; 729#L876-2 assume !(0 != ~pumpRunning~0); 710#L621 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 711#L679 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 705#L653-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 641#L507-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 642#L512-1 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 706#L799-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 703#L799-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 704#L805-1 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 734#L657-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 695#L628 havoc __utac_acc__Specification3_spec__1_#t~ret53, __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 696#L467-2 __utac_acc__Specification3_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret53;havoc __utac_acc__Specification3_spec__1_#t~ret53; 733#L576 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 664#L582-1 [2021-10-28 23:08:21,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 23:08:21,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:21,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075245520] [2021-10-28 23:08:21,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:21,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:21,374 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:21,431 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:08:21,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1392929194, now seen corresponding path program 1 times [2021-10-28 23:08:21,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:21,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152222454] [2021-10-28 23:08:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:21,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:21,439 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:21,449 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:08:21,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:21,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1849000388, now seen corresponding path program 1 times [2021-10-28 23:08:21,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:21,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961304677] [2021-10-28 23:08:21,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:21,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:21,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:21,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961304677] [2021-10-28 23:08:21,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961304677] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:21,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:21,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:08:21,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172955126] [2021-10-28 23:08:21,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:21,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:08:21,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:08:21,811 INFO L87 Difference]: Start difference. First operand 178 states and 246 transitions. cyclomatic complexity: 70 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-10-28 23:08:22,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:22,015 INFO L93 Difference]: Finished difference Result 621 states and 863 transitions. [2021-10-28 23:08:22,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:08:22,016 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 621 states and 863 transitions. [2021-10-28 23:08:22,022 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 452 [2021-10-28 23:08:22,028 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 621 states to 621 states and 863 transitions. [2021-10-28 23:08:22,028 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 621 [2021-10-28 23:08:22,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 621 [2021-10-28 23:08:22,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 621 states and 863 transitions. [2021-10-28 23:08:22,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:08:22,032 INFO L681 BuchiCegarLoop]: Abstraction has 621 states and 863 transitions. [2021-10-28 23:08:22,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states and 863 transitions. [2021-10-28 23:08:22,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 350. [2021-10-28 23:08:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 350 states have (on average 1.3657142857142857) internal successors, (478), 349 states have internal predecessors, (478), 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) [2021-10-28 23:08:22,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 478 transitions. [2021-10-28 23:08:22,054 INFO L704 BuchiCegarLoop]: Abstraction has 350 states and 478 transitions. [2021-10-28 23:08:22,054 INFO L587 BuchiCegarLoop]: Abstraction has 350 states and 478 transitions. [2021-10-28 23:08:22,055 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:08:22,055 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 350 states and 478 transitions. [2021-10-28 23:08:22,057 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 244 [2021-10-28 23:08:22,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:08:22,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:08:22,058 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:08:22,058 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, 1] [2021-10-28 23:08:22,059 INFO L791 eck$LassoCheckResult]: Stem: 1585#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1495#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1496#L552 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1458#L560 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 1459#L977 assume 0 != main_~tmp~10; 1575#L954 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1589#L582-1 [2021-10-28 23:08:22,059 INFO L793 eck$LassoCheckResult]: Loop: 1589#L582-1 assume !false; 1670#L841 assume test_~splverifierCounter~0 < 4; 1671#L842 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 1773#L850 assume !(0 != test_~tmp~9); 1771#L850-1 test_~tmp___0~3 := test_#t~nondet79;havoc test_#t~nondet79; 1769#L860 assume !(0 != test_~tmp___0~3); 1768#L860-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 1767#L870 assume 0 != test_~tmp___2~0; 1756#L876-2 assume !(0 != ~pumpRunning~0); 1751#L621 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1573#L679 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1529#L653-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 1456#L507-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 1457#L512-1 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 1686#L799-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 1683#L799-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 1568#L805-1 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 1567#L657-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 1516#L628 havoc __utac_acc__Specification3_spec__1_#t~ret53, __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 1680#L467-2 __utac_acc__Specification3_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret53;havoc __utac_acc__Specification3_spec__1_#t~ret53; 1564#L576 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~3);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 1565#L499 __utac_acc__Specification3_spec__1_#t~ret54 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 1677#L582 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1589#L582-1 [2021-10-28 23:08:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 23:08:22,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:22,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823295771] [2021-10-28 23:08:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:22,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:22,091 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:22,128 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:08:22,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:22,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1424832324, now seen corresponding path program 1 times [2021-10-28 23:08:22,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:22,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251910200] [2021-10-28 23:08:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:22,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:22,135 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:22,144 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:08:22,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:22,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1227079082, now seen corresponding path program 1 times [2021-10-28 23:08:22,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:22,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54533890] [2021-10-28 23:08:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:22,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:22,177 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:22,245 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:09:24,374 WARN L207 SmtUtils]: Spent 1.03 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 23:10:26,546 WARN L207 SmtUtils]: Spent 30.28 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 23:10:26,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:10:26 BoogieIcfgContainer [2021-10-28 23:10:26,689 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:10:26,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:10:26,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:10:26,690 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:10:26,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:19" (3/4) ... [2021-10-28 23:10:26,693 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:10:26,744 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:10:26,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:10:26,745 INFO L168 Benchmark]: Toolchain (without parser) took 129259.49 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 50.9 MB in the beginning and 79.2 MB in the end (delta: -28.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:26,746 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 58.5 MB in the beginning and 58.5 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:10:26,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.24 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.7 MB in the beginning and 72.7 MB in the end (delta: -22.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:26,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.10 ms. Allocated memory is still 104.9 MB. Free memory was 72.7 MB in the beginning and 68.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:26,747 INFO L168 Benchmark]: Boogie Preprocessor took 83.88 ms. Allocated memory is still 104.9 MB. Free memory was 68.6 MB in the beginning and 65.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:26,748 INFO L168 Benchmark]: RCFGBuilder took 1290.82 ms. Allocated memory is still 104.9 MB. Free memory was 65.8 MB in the beginning and 75.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:26,748 INFO L168 Benchmark]: BuchiAutomizer took 127127.61 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 75.0 MB in the beginning and 81.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 72.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:26,749 INFO L168 Benchmark]: Witness Printer took 54.62 ms. Allocated memory is still 125.8 MB. Free memory was 81.3 MB in the beginning and 79.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:26,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 58.5 MB in the beginning and 58.5 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 569.24 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.7 MB in the beginning and 72.7 MB in the end (delta: -22.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 127.10 ms. Allocated memory is still 104.9 MB. Free memory was 72.7 MB in the beginning and 68.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.88 ms. Allocated memory is still 104.9 MB. Free memory was 68.6 MB in the beginning and 65.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1290.82 ms. Allocated memory is still 104.9 MB. Free memory was 65.8 MB in the beginning and 75.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 127127.61 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 75.0 MB in the beginning and 81.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 72.5 MB. Max. memory is 16.1 GB. * Witness Printer took 54.62 ms. Allocated memory is still 125.8 MB. Free memory was 81.3 MB in the beginning and 79.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 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 350 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 127.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 126.2s. Construction of modules took 0.3s. 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 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 271 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 350 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 629 SDtfs, 1474 SDslu, 936 SDs, 0 SdLazy, 143 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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: 840]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=11630} State at position 1 is {NULL=0, NULL=0, NULL=11630, NULL=38233, NULL=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61249726=0, NULL=0, tmp___1=0, tmp=0, NULL=38239, NULL=0, NULL=11633, NULL=38228, cleanupTimeShifts=4, NULL=11636, tmp=0, tmp=1, NULL=0, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c6e7439=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=11631, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26fb759a=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b7e2587=0, NULL=38230, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79a363bf=0, tmp=1, tmp___0=0, NULL=0, retValue_acc=1, NULL=38240, NULL=38227, NULL=38232, head=0, NULL=0, NULL=0, tmp=0, NULL=38237, NULL=0, NULL=0, NULL=11632, NULL=0, NULL=0, NULL=38226, NULL=38229, NULL=0, NULL=11634, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@356a2edc=0, tmp___0=0, NULL=0, NULL=0, NULL=0, tmp___0=1, NULL=38234, tmp=0, NULL=11638, NULL=38241, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41c6a5cd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31f642e=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=38235, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b98b3bb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@380e8410=53, retValue_acc=0, \result=0, NULL=38238, NULL=38243, retValue_acc=0, NULL=38244, \result=0, NULL=0, NULL=11635, NULL=38231, retValue_acc=1, NULL=11637, tmp___2=53, splverifierCounter=0, NULL=0, \result=0, NULL=38242, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fd20a76=0, NULL=38236, NULL=11639} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L424] int waterLevel = 1; [L425] int methaneLevelCritical = 0; [L614] int pumpRunning = 0; [L615] int systemActive = 1; [L895] int cleanupTimeShifts = 4; [L968] int retValue_acc ; [L969] int tmp ; [L556] int retValue_acc ; [L559] retValue_acc = 1 [L560] return (retValue_acc); [L975] tmp = valid_product() [L977] COND TRUE \read(tmp) [L831] int splverifierCounter ; [L832] int tmp ; [L833] int tmp___0 ; [L834] int tmp___1 ; [L835] int tmp___2 ; [L838] splverifierCounter = 0 Loop: [L840] COND TRUE 1 [L842] COND TRUE splverifierCounter < 4 [L848] tmp = __VERIFIER_nondet_int() [L850] COND FALSE !(\read(tmp)) [L858] tmp___0 = __VERIFIER_nondet_int() [L860] COND FALSE !(\read(tmp___0)) [L868] tmp___2 = __VERIFIER_nondet_int() [L870] COND TRUE \read(tmp___2) [L621] COND FALSE !(\read(pumpRunning)) [L628] COND TRUE \read(systemActive) [L676] int tmp ; [L679] COND FALSE !(\read(pumpRunning)) [L650] int tmp ; [L653] COND TRUE ! pumpRunning [L791] int retValue_acc ; [L792] int tmp ; [L793] int tmp___0 ; [L504] int retValue_acc ; [L507] COND TRUE waterLevel < 2 [L508] retValue_acc = 1 [L509] return (retValue_acc); [L797] tmp = isHighWaterSensorDry() [L799] COND TRUE \read(tmp) [L800] tmp___0 = 0 [L804] retValue_acc = tmp___0 [L805] return (retValue_acc); [L655] tmp = isHighWaterLevel() [L657] COND FALSE !(\read(tmp)) [L568] int tmp ; [L569] int tmp___0 ; [L570] int tmp___1 ; [L463] int retValue_acc ; [L466] retValue_acc = methaneLevelCritical [L467] return (retValue_acc); [L574] tmp = isMethaneLevelCritical() [L576] COND FALSE !(\read(tmp)) [L495] int retValue_acc ; [L498] retValue_acc = waterLevel [L499] return (retValue_acc); [L580] tmp___0 = getWaterLevel() [L582] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:10:26,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bccd40a-0724-427e-bee5-f0622187147a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...