./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be --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 34b47c00ac265c7154b048b065075686f0b0d02157935b615817b802464c404c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-e943c26 [2021-10-21 19:06:05,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:06:05,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:06:05,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:06:05,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:06:05,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:06:05,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:06:05,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:06:05,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:06:05,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:06:05,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:06:05,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:06:05,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:06:05,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:06:05,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:06:05,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:06:05,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:06:05,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:06:05,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:06:05,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:06:05,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:06:05,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:06:05,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:06:05,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:06:05,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:06:05,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:06:05,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:06:05,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:06:05,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:06:05,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:06:05,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:06:05,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:06:05,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:06:05,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:06:05,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:06:05,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:06:05,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:06:05,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:06:05,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:06:05,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:06:05,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:06:05,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:06:05,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:06:05,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:06:05,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:06:05,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:06:05,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:06:05,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:06:05,275 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:06:05,275 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:06:05,275 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:06:05,275 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:06:05,276 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:06:05,276 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:06:05,276 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:06:05,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:06:05,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:06:05,277 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:06:05,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:06:05,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:06:05,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:06:05,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:06:05,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:06:05,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:06:05,278 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:06:05,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:06:05,279 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:06:05,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:06:05,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:06:05,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:06:05,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:06:05,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:06:05,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:06:05,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:06:05,282 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:06:05,282 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_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34b47c00ac265c7154b048b065075686f0b0d02157935b615817b802464c404c [2021-10-21 19:06:05,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:06:05,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:06:05,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:06:05,567 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:06:05,568 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:06:05,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c [2021-10-21 19:06:05,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/data/932cecf58/5f64efe53ed14377ab6c047c00378de8/FLAG1a6c808da [2021-10-21 19:06:06,128 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:06:06,129 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c [2021-10-21 19:06:06,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/data/932cecf58/5f64efe53ed14377ab6c047c00378de8/FLAG1a6c808da [2021-10-21 19:06:06,479 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/data/932cecf58/5f64efe53ed14377ab6c047c00378de8 [2021-10-21 19:06:06,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:06:06,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:06:06,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:06:06,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:06:06,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:06:06,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:06,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5844206f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06, skipping insertion in model container [2021-10-21 19:06:06,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:06,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:06:06,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:06:06,855 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_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c[19180,19193] [2021-10-21 19:06:06,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:06:06,868 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:06:06,944 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_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c[19180,19193] [2021-10-21 19:06:06,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:06:06,966 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:06:06,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06 WrapperNode [2021-10-21 19:06:06,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:06:06,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:06:06,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:06:06,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:06:06,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:06,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:07,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:06:07,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:06:07,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:06:07,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:06:07,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:07,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:07,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:07,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:07,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:07,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:07,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:07,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:06:07,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:06:07,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:06:07,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:06:07,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06" (1/1) ... [2021-10-21 19:06:07,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:06:07,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:06:07,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:06:07,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:06:07,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:06:07,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:06:07,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:06:07,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:06:08,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:06:08,358 INFO L299 CfgBuilder]: Removed 364 assume(true) statements. [2021-10-21 19:06:08,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:06:08 BoogieIcfgContainer [2021-10-21 19:06:08,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:06:08,362 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:06:08,362 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:06:08,365 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:06:08,366 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:06:08,366 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:06:06" (1/3) ... [2021-10-21 19:06:08,367 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48d8e745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:06:08, skipping insertion in model container [2021-10-21 19:06:08,368 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:06:08,368 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:06:06" (2/3) ... [2021-10-21 19:06:08,368 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48d8e745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:06:08, skipping insertion in model container [2021-10-21 19:06:08,368 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:06:08,369 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:06:08" (3/3) ... [2021-10-21 19:06:08,370 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product62.cil.c [2021-10-21 19:06:08,411 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:06:08,411 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:06:08,411 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:06:08,412 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:06:08,412 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:06:08,412 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:06:08,412 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:06:08,412 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:06:08,433 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 231 states, 230 states have (on average 1.5) internal successors, (345), 230 states have internal predecessors, (345), 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) [2021-10-21 19:06:08,465 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2021-10-21 19:06:08,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:06:08,465 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:06:08,473 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:06:08,474 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:06:08,474 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:06:08,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 231 states, 230 states have (on average 1.5) internal successors, (345), 230 states have internal predecessors, (345), 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) [2021-10-21 19:06:08,485 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2021-10-21 19:06:08,485 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:06:08,485 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:06:08,486 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:06:08,487 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:06:08,491 INFO L791 eck$LassoCheckResult]: Stem: 223#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 145#L-1true havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~11, main_~tmp~11;havoc main_~retValue_acc~11;havoc main_~tmp~11; 37#L1035true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 103#L1043true main_#t~ret82 := valid_product_#res;main_~tmp~11 := main_#t~ret82;havoc main_#t~ret82; 79#L990true assume 0 != main_~tmp~11; 200#L963true ~switchedOnBeforeTS~0 := 0; 186#L322true havoc test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_#t~nondet36, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 47#L343-1true [2021-10-21 19:06:08,492 INFO L793 eck$LassoCheckResult]: Loop: 47#L343-1true assume !false; 92#L379true assume test_~splverifierCounter~0 < 4; 177#L380true test_~tmp~7 := test_#t~nondet33;havoc test_#t~nondet33; 24#L388true assume !(0 != test_~tmp~7); 203#L388-1true test_~tmp___0~3 := test_#t~nondet34;havoc test_#t~nondet34; 215#L398true assume !(0 != test_~tmp___0~3); 34#L398-1true test_~tmp___2~0 := test_#t~nondet35;havoc test_#t~nondet35; 206#L408true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 97#L416-2true havoc __utac_acc__Specification5_spec__2_#t~ret30;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 83#L227true __utac_acc__Specification5_spec__2_#t~ret30 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret30;havoc __utac_acc__Specification5_spec__2_#t~ret30; 141#L332true assume !(0 != ~pumpRunning~0); 90#L73true assume !(0 != ~systemActive~0); 126#L80true havoc __utac_acc__Specification5_spec__3_#t~ret31, __utac_acc__Specification5_spec__3_#t~ret32, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 77#L876true __utac_acc__Specification5_spec__3_#t~ret31 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret31;havoc __utac_acc__Specification5_spec__3_#t~ret31; 191#L343true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 47#L343-1true [2021-10-21 19:06:08,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:06:08,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-21 19:06:08,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:06:08,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650388778] [2021-10-21 19:06:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:06:08,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:06:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:08,734 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:06:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:08,941 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:06:08,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:06:08,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1017841037, now seen corresponding path program 1 times [2021-10-21 19:06:08,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:06:08,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756717956] [2021-10-21 19:06:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:06:08,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:06:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:06:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:06:09,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:06:09,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756717956] [2021-10-21 19:06:09,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756717956] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:06:09,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:06:09,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:06:09,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672662074] [2021-10-21 19:06:09,041 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:06:09,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:06:09,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:06:09,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:06:09,059 INFO L87 Difference]: Start difference. First operand has 231 states, 230 states have (on average 1.5) internal successors, (345), 230 states have internal predecessors, (345), 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 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) [2021-10-21 19:06:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:06:09,131 INFO L93 Difference]: Finished difference Result 231 states and 335 transitions. [2021-10-21 19:06:09,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:06:09,135 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 231 states and 335 transitions. [2021-10-21 19:06:09,146 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-10-21 19:06:09,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 231 states to 224 states and 327 transitions. [2021-10-21 19:06:09,157 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 224 [2021-10-21 19:06:09,160 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2021-10-21 19:06:09,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 327 transitions. [2021-10-21 19:06:09,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:06:09,165 INFO L681 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2021-10-21 19:06:09,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 327 transitions. [2021-10-21 19:06:09,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-10-21 19:06:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 224 states have (on average 1.4598214285714286) internal successors, (327), 223 states have internal predecessors, (327), 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) [2021-10-21 19:06:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 327 transitions. [2021-10-21 19:06:09,203 INFO L704 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2021-10-21 19:06:09,203 INFO L587 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2021-10-21 19:06:09,203 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:06:09,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 224 states and 327 transitions. [2021-10-21 19:06:09,205 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-10-21 19:06:09,206 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:06:09,206 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:06:09,207 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:06:09,207 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:06:09,207 INFO L791 eck$LassoCheckResult]: Stem: 691#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 671#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~11, main_~tmp~11;havoc main_~retValue_acc~11;havoc main_~tmp~11; 539#L1035 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 540#L1043 main_#t~ret82 := valid_product_#res;main_~tmp~11 := main_#t~ret82;havoc main_#t~ret82; 605#L990 assume 0 != main_~tmp~11; 606#L963 ~switchedOnBeforeTS~0 := 0; 682#L322 havoc test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_#t~nondet36, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 557#L343-1 [2021-10-21 19:06:09,208 INFO L793 eck$LassoCheckResult]: Loop: 557#L343-1 assume !false; 558#L379 assume test_~splverifierCounter~0 < 4; 624#L380 test_~tmp~7 := test_#t~nondet33;havoc test_#t~nondet33; 513#L388 assume !(0 != test_~tmp~7); 515#L388-1 test_~tmp___0~3 := test_#t~nondet34;havoc test_#t~nondet34; 686#L398 assume !(0 != test_~tmp___0~3); 533#L398-1 test_~tmp___2~0 := test_#t~nondet35;havoc test_#t~nondet35; 534#L408 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 507#L416-2 havoc __utac_acc__Specification5_spec__2_#t~ret30;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 607#L227 __utac_acc__Specification5_spec__2_#t~ret30 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret30;havoc __utac_acc__Specification5_spec__2_#t~ret30; 608#L332 assume !(0 != ~pumpRunning~0); 620#L73 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 477#L157 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret8, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 478#L131-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 684#L105-3 assume !(0 == ~pumpRunning~0); 550#L80 havoc __utac_acc__Specification5_spec__3_#t~ret31, __utac_acc__Specification5_spec__3_#t~ret32, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 602#L876 __utac_acc__Specification5_spec__3_#t~ret31 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret31;havoc __utac_acc__Specification5_spec__3_#t~ret31; 603#L343 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 557#L343-1 [2021-10-21 19:06:09,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:06:09,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-21 19:06:09,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:06:09,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427852699] [2021-10-21 19:06:09,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:06:09,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:06:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:09,268 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:06:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:09,382 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:06:09,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:06:09,383 INFO L82 PathProgramCache]: Analyzing trace with hash 901397577, now seen corresponding path program 1 times [2021-10-21 19:06:09,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:06:09,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580664475] [2021-10-21 19:06:09,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:06:09,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:06:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:06:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:06:09,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:06:09,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580664475] [2021-10-21 19:06:09,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580664475] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:06:09,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:06:09,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:06:09,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830676604] [2021-10-21 19:06:09,418 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:06:09,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:06:09,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:06:09,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:06:09,422 INFO L87 Difference]: Start difference. First operand 224 states and 327 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-21 19:06:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:06:09,569 INFO L93 Difference]: Finished difference Result 228 states and 314 transitions. [2021-10-21 19:06:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:06:09,570 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 314 transitions. [2021-10-21 19:06:09,573 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 156 [2021-10-21 19:06:09,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 228 states and 314 transitions. [2021-10-21 19:06:09,578 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2021-10-21 19:06:09,579 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 228 [2021-10-21 19:06:09,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 228 states and 314 transitions. [2021-10-21 19:06:09,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:06:09,586 INFO L681 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2021-10-21 19:06:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states and 314 transitions. [2021-10-21 19:06:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-10-21 19:06:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 228 states have (on average 1.3771929824561404) internal successors, (314), 227 states have internal predecessors, (314), 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) [2021-10-21 19:06:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2021-10-21 19:06:09,610 INFO L704 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2021-10-21 19:06:09,610 INFO L587 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2021-10-21 19:06:09,610 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:06:09,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 228 states and 314 transitions. [2021-10-21 19:06:09,611 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 156 [2021-10-21 19:06:09,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:06:09,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:06:09,613 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:06:09,613 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, 1] [2021-10-21 19:06:09,613 INFO L791 eck$LassoCheckResult]: Stem: 1115#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 1033#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~11, main_~tmp~11;havoc main_~retValue_acc~11;havoc main_~tmp~11; 1026#L1035 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 1027#L1043 main_#t~ret82 := valid_product_#res;main_~tmp~11 := main_#t~ret82;havoc main_#t~ret82; 1094#L990 assume 0 != main_~tmp~11; 1095#L963 ~switchedOnBeforeTS~0 := 0; 1084#L322 havoc test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_#t~nondet36, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1047#L343-1 [2021-10-21 19:06:09,613 INFO L793 eck$LassoCheckResult]: Loop: 1047#L343-1 assume !false; 1048#L379 assume test_~splverifierCounter~0 < 4; 1106#L380 test_~tmp~7 := test_#t~nondet33;havoc test_#t~nondet33; 1156#L388 assume !(0 != test_~tmp~7); 1154#L388-1 test_~tmp___0~3 := test_#t~nondet34;havoc test_#t~nondet34; 1153#L398 assume !(0 != test_~tmp___0~3); 1151#L398-1 test_~tmp___2~0 := test_#t~nondet35;havoc test_#t~nondet35; 1150#L408 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1148#L416-2 havoc __utac_acc__Specification5_spec__2_#t~ret30;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1147#L227 __utac_acc__Specification5_spec__2_#t~ret30 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret30;havoc __utac_acc__Specification5_spec__2_#t~ret30; 1010#L332 assume !(0 != ~pumpRunning~0); 1011#L73 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 948#L157 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret8, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 949#L131-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1096#L105-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret28, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 935#L884-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 936#L889-3 isHighWaterLevel_#t~ret28 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret28;havoc isHighWaterLevel_#t~ret28; 1079#L276-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 1072#L276-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1073#L282-3 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 929#L109-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 930#L80 havoc __utac_acc__Specification5_spec__3_#t~ret31, __utac_acc__Specification5_spec__3_#t~ret32, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 966#L876 __utac_acc__Specification5_spec__3_#t~ret31 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret31;havoc __utac_acc__Specification5_spec__3_#t~ret31; 1089#L343 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 1047#L343-1 [2021-10-21 19:06:09,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:06:09,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-21 19:06:09,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:06:09,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105047392] [2021-10-21 19:06:09,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:06:09,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:06:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:09,660 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:06:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:09,750 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:06:09,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:06:09,751 INFO L82 PathProgramCache]: Analyzing trace with hash -9342763, now seen corresponding path program 1 times [2021-10-21 19:06:09,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:06:09,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91518344] [2021-10-21 19:06:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:06:09,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:06:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:06:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:06:09,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:06:09,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91518344] [2021-10-21 19:06:09,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91518344] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:06:09,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:06:09,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:06:09,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592293694] [2021-10-21 19:06:09,799 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:06:09,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:06:09,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:06:09,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:06:09,800 INFO L87 Difference]: Start difference. First operand 228 states and 314 transitions. cyclomatic complexity: 88 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-10-21 19:06:10,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:06:10,092 INFO L93 Difference]: Finished difference Result 1078 states and 1497 transitions. [2021-10-21 19:06:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:06:10,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1078 states and 1497 transitions. [2021-10-21 19:06:10,104 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 733 [2021-10-21 19:06:10,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1078 states to 1078 states and 1497 transitions. [2021-10-21 19:06:10,114 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1078 [2021-10-21 19:06:10,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1078 [2021-10-21 19:06:10,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1078 states and 1497 transitions. [2021-10-21 19:06:10,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:06:10,117 INFO L681 BuchiCegarLoop]: Abstraction has 1078 states and 1497 transitions. [2021-10-21 19:06:10,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states and 1497 transitions. [2021-10-21 19:06:10,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 446. [2021-10-21 19:06:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 446 states have (on average 1.3654708520179373) internal successors, (609), 445 states have internal predecessors, (609), 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) [2021-10-21 19:06:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 609 transitions. [2021-10-21 19:06:10,155 INFO L704 BuchiCegarLoop]: Abstraction has 446 states and 609 transitions. [2021-10-21 19:06:10,155 INFO L587 BuchiCegarLoop]: Abstraction has 446 states and 609 transitions. [2021-10-21 19:06:10,156 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:06:10,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 446 states and 609 transitions. [2021-10-21 19:06:10,158 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 310 [2021-10-21 19:06:10,159 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:06:10,159 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:06:10,161 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:06:10,161 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, 1, 1, 1] [2021-10-21 19:06:10,161 INFO L791 eck$LassoCheckResult]: Stem: 2457#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 2363#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~11, main_~tmp~11;havoc main_~retValue_acc~11;havoc main_~tmp~11; 2355#L1035 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 2356#L1043 main_#t~ret82 := valid_product_#res;main_~tmp~11 := main_#t~ret82;havoc main_#t~ret82; 2431#L990 assume 0 != main_~tmp~11; 2432#L963 ~switchedOnBeforeTS~0 := 0; 2419#L322 havoc test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_#t~nondet36, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2420#L343-1 [2021-10-21 19:06:10,162 INFO L793 eck$LassoCheckResult]: Loop: 2420#L343-1 assume !false; 2631#L379 assume test_~splverifierCounter~0 < 4; 2630#L380 test_~tmp~7 := test_#t~nondet33;havoc test_#t~nondet33; 2629#L388 assume !(0 != test_~tmp~7); 2626#L388-1 test_~tmp___0~3 := test_#t~nondet34;havoc test_#t~nondet34; 2625#L398 assume !(0 != test_~tmp___0~3); 2623#L398-1 test_~tmp___2~0 := test_#t~nondet35;havoc test_#t~nondet35; 2622#L408 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2620#L416-2 havoc __utac_acc__Specification5_spec__2_#t~ret30;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2619#L227 __utac_acc__Specification5_spec__2_#t~ret30 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret30;havoc __utac_acc__Specification5_spec__2_#t~ret30; 2338#L332 assume !(0 != ~pumpRunning~0); 2339#L73 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 2274#L157 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret8, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 2275#L131-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 2433#L105-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret28, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 2265#L884-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 2266#L889-3 isHighWaterLevel_#t~ret28 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret28;havoc isHighWaterLevel_#t~ret28; 2414#L276-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 2406#L276-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2407#L282-3 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 2254#L109-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2255#L80 havoc __utac_acc__Specification5_spec__3_#t~ret31, __utac_acc__Specification5_spec__3_#t~ret32, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 2490#L876 __utac_acc__Specification5_spec__3_#t~ret31 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret31;havoc __utac_acc__Specification5_spec__3_#t~ret31; 2491#L343 assume 2 != __utac_acc__Specification5_spec__3_~tmp~6;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2479#L227-1 __utac_acc__Specification5_spec__3_#t~ret32 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret32;havoc __utac_acc__Specification5_spec__3_#t~ret32; 2480#L347 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 2420#L343-1 [2021-10-21 19:06:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:06:10,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-21 19:06:10,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:06:10,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141092631] [2021-10-21 19:06:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:06:10,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:06:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:10,252 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:06:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:10,306 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:06:10,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:06:10,307 INFO L82 PathProgramCache]: Analyzing trace with hash -388467952, now seen corresponding path program 1 times [2021-10-21 19:06:10,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:06:10,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927819648] [2021-10-21 19:06:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:06:10,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:06:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:10,314 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:06:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:10,323 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:06:10,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:06:10,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1940287702, now seen corresponding path program 1 times [2021-10-21 19:06:10,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:06:10,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427057505] [2021-10-21 19:06:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:06:10,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:06:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:10,360 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:06:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:06:10,405 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:07:06,109 WARN L207 SmtUtils]: Spent 55.36 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-21 19:08:01,126 WARN L207 SmtUtils]: Spent 26.04 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-21 19:08:01,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:08:01 BoogieIcfgContainer [2021-10-21 19:08:01,327 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:08:01,327 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:08:01,343 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:08:01,343 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:08:01,344 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:06:08" (3/4) ... [2021-10-21 19:08:01,346 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:08:01,427 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:08:01,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:08:01,429 INFO L168 Benchmark]: Toolchain (without parser) took 114945.77 ms. Allocated memory was 117.4 MB in the beginning and 209.7 MB in the end (delta: 92.3 MB). Free memory was 86.6 MB in the beginning and 100.9 MB in the end (delta: -14.3 MB). Peak memory consumption was 77.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:08:01,429 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 117.4 MB. Free memory is still 72.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:08:01,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.25 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 86.5 MB in the beginning and 114.6 MB in the end (delta: -28.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:08:01,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.38 ms. Allocated memory is still 148.9 MB. Free memory was 114.6 MB in the beginning and 108.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:08:01,431 INFO L168 Benchmark]: Boogie Preprocessor took 90.18 ms. Allocated memory is still 148.9 MB. Free memory was 108.6 MB in the beginning and 104.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:08:01,431 INFO L168 Benchmark]: RCFGBuilder took 1186.82 ms. Allocated memory is still 148.9 MB. Free memory was 104.8 MB in the beginning and 112.2 MB in the end (delta: -7.5 MB). Peak memory consumption was 54.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:08:01,432 INFO L168 Benchmark]: BuchiAutomizer took 112964.99 ms. Allocated memory was 148.9 MB in the beginning and 209.7 MB in the end (delta: 60.8 MB). Free memory was 112.2 MB in the beginning and 103.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 125.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:08:01,432 INFO L168 Benchmark]: Witness Printer took 100.46 ms. Allocated memory is still 209.7 MB. Free memory was 103.9 MB in the beginning and 100.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:08:01,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 117.4 MB. Free memory is still 72.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 483.25 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 86.5 MB in the beginning and 114.6 MB in the end (delta: -28.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.38 ms. Allocated memory is still 148.9 MB. Free memory was 114.6 MB in the beginning and 108.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 90.18 ms. Allocated memory is still 148.9 MB. Free memory was 108.6 MB in the beginning and 104.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1186.82 ms. Allocated memory is still 148.9 MB. Free memory was 104.8 MB in the beginning and 112.2 MB in the end (delta: -7.5 MB). Peak memory consumption was 54.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 112964.99 ms. Allocated memory was 148.9 MB in the beginning and 209.7 MB in the end (delta: 60.8 MB). Free memory was 112.2 MB in the beginning and 103.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 125.3 MB. Max. memory is 16.1 GB. * Witness Printer took 100.46 ms. Allocated memory is still 209.7 MB. Free memory was 103.9 MB in the beginning and 100.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 446 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 112.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 112.0s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 86.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 632 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 446 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1027 SDtfs, 1807 SDslu, 1326 SDs, 0 SdLazy, 232 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 261.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 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: 378]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=25554} State at position 1 is {NULL=0, NULL=0, NULL=25571, NULL=25554, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4798df3b=0, NULL=0, NULL=25579, NULL=0, NULL=25567, retValue_acc=1, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11cfe561=0, NULL=0, retValue_acc=0, tmp=0, NULL=25566, NULL=0, tmp___1=0, NULL=25558, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@398b2954=0, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6161bd46=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@544ff78f=74, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3221b603=0, NULL=25561, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5c48a81c=0, NULL=0, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6919e0ab=0, NULL=25573, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ff0aec0=0, NULL=25562, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=25570, \result=1, NULL=0, tmp=1, NULL=0, NULL=25582, retValue_acc=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5bbc4abf=0, tmp___0=0, NULL=0, NULL=25578, NULL=25556, tmp=0, head=0, tmp=0, NULL=25574, NULL=25559, NULL=25560, NULL=25572, tmp=1, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, tmp=0, switchedOnBeforeTS=0, NULL=25568, \result=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=25580, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=25564, tmp___0=0, \result=0, NULL=25565, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c1e63f8=0, NULL=0, NULL=25563, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ac23e2f=0, NULL=0, NULL=0, NULL=25576, NULL=25577, NULL=25575, tmp___2=74, splverifierCounter=0, NULL=0, NULL=0, NULL=25555, NULL=25557, retValue_acc=0, NULL=25581, NULL=0, NULL=25569} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L61] int pumpRunning = 0; [L62] int systemActive = 1; [L316] int switchedOnBeforeTS ; [L604] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L801] int waterLevel = 1; [L802] int methaneLevelCritical = 0; [L904] int cleanupTimeShifts = 4; [L981] int retValue_acc ; [L982] int tmp ; [L1039] int retValue_acc ; [L1042] retValue_acc = 1 [L1043] return (retValue_acc); [L988] tmp = valid_product() [L990] COND TRUE \read(tmp) [L321] switchedOnBeforeTS = 0 [L369] int splverifierCounter ; [L370] int tmp ; [L371] int tmp___0 ; [L372] int tmp___1 ; [L373] int tmp___2 ; [L376] splverifierCounter = 0 Loop: [L378] COND TRUE 1 [L380] COND TRUE splverifierCounter < 4 [L386] tmp = __VERIFIER_nondet_int() [L388] COND FALSE !(\read(tmp)) [L396] tmp___0 = __VERIFIER_nondet_int() [L398] COND FALSE !(\read(tmp___0)) [L406] tmp___2 = __VERIFIER_nondet_int() [L408] COND TRUE \read(tmp___2) [L309] systemActive = 1 [L223] int retValue_acc ; [L226] retValue_acc = pumpRunning [L227] return (retValue_acc); [L330] switchedOnBeforeTS = isPumpRunning() [L73] COND FALSE !(\read(pumpRunning)) [L80] COND TRUE \read(systemActive) [L154] int tmp ; [L157] COND FALSE !(\read(pumpRunning)) [L128] int tmp ; [L131] COND FALSE !(\read(pumpRunning)) [L102] int tmp ; [L105] COND TRUE ! pumpRunning [L268] int retValue_acc ; [L269] int tmp ; [L270] int tmp___0 ; [L881] int retValue_acc ; [L884] COND TRUE waterLevel < 2 [L885] retValue_acc = 1 [L886] return (retValue_acc); [L274] tmp = isHighWaterSensorDry() [L276] COND TRUE \read(tmp) [L277] tmp___0 = 0 [L281] retValue_acc = tmp___0 [L282] return (retValue_acc); [L107] tmp = isHighWaterLevel() [L109] COND FALSE !(\read(tmp)) [L336] int tmp ; [L337] int tmp___0 ; [L872] int retValue_acc ; [L875] retValue_acc = waterLevel [L876] return (retValue_acc); [L341] tmp = getWaterLevel() [L343] COND TRUE tmp != 2 [L223] int retValue_acc ; [L226] retValue_acc = pumpRunning [L227] return (retValue_acc); [L345] tmp___0 = isPumpRunning() [L347] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:08:01,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b283ca5-c9e8-4f9f-9d8d-31e75ebf47e6/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...