./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU --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 61c2d7b2f53adc3803e4e62ab44daa78f4a9bdf9ba37b58d516bb40a6cc23cc6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:03:47,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:03:47,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:03:48,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:03:48,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:03:48,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:03:48,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:03:48,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:03:48,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:03:48,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:03:48,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:03:48,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:03:48,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:03:48,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:03:48,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:03:48,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:03:48,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:03:48,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:03:48,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:03:48,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:03:48,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:03:48,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:03:48,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:03:48,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:03:48,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:03:48,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:03:48,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:03:48,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:03:48,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:03:48,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:03:48,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:03:48,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:03:48,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:03:48,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:03:48,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:03:48,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:03:48,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:03:48,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:03:48,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:03:48,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:03:48,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:03:48,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-02 23:03:48,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:03:48,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:03:48,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:03:48,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:03:48,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:03:48,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:03:48,173 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:03:48,174 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-02 23:03:48,174 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-02 23:03:48,174 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-02 23:03:48,175 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-02 23:03:48,175 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-02 23:03:48,176 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-02 23:03:48,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:03:48,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:03:48,177 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 23:03:48,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:03:48,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:03:48,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:03:48,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-02 23:03:48,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-02 23:03:48,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-02 23:03:48,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:03:48,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:03:48,179 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-02 23:03:48,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:03:48,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-02 23:03:48,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:03:48,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:03:48,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:03:48,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:03:48,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:03:48,183 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-02 23:03:48,183 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_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61c2d7b2f53adc3803e4e62ab44daa78f4a9bdf9ba37b58d516bb40a6cc23cc6 [2021-11-02 23:03:48,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:03:48,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:03:48,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:03:48,469 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:03:48,474 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:03:48,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c [2021-11-02 23:03:48,541 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/data/d1eb63558/436bef03f9f04590b0027581e99cec46/FLAGb371bb82c [2021-11-02 23:03:49,212 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:03:49,226 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c [2021-11-02 23:03:49,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/data/d1eb63558/436bef03f9f04590b0027581e99cec46/FLAGb371bb82c [2021-11-02 23:03:49,482 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/data/d1eb63558/436bef03f9f04590b0027581e99cec46 [2021-11-02 23:03:49,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:03:49,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:03:49,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:03:49,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:03:49,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:03:49,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:03:49" (1/1) ... [2021-11-02 23:03:49,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cba85a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:49, skipping insertion in model container [2021-11-02 23:03:49,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:03:49" (1/1) ... [2021-11-02 23:03:49,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:03:49,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:03:49,856 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_8debff58-b20f-4b76-ab93-1b5591a6a596/sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c[13937,13950] [2021-11-02 23:03:49,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:03:49,894 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:03:49,982 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_8debff58-b20f-4b76-ab93-1b5591a6a596/sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c[13937,13950] [2021-11-02 23:03:50,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:03:50,035 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:03:50,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50 WrapperNode [2021-11-02 23:03:50,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:03:50,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:03:50,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:03:50,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:03:50,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50" (1/1) ... [2021-11-02 23:03:50,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50" (1/1) ... [2021-11-02 23:03:50,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:03:50,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:03:50,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:03:50,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:03:50,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50" (1/1) ... [2021-11-02 23:03:50,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50" (1/1) ... [2021-11-02 23:03:50,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50" (1/1) ... [2021-11-02 23:03:50,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50" (1/1) ... [2021-11-02 23:03:50,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50" (1/1) ... [2021-11-02 23:03:50,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50" (1/1) ... [2021-11-02 23:03:50,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50" (1/1) ... [2021-11-02 23:03:50,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:03:50,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:03:50,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:03:50,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:03:50,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50" (1/1) ... [2021-11-02 23:03:50,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 23:03:50,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:03:50,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 23:03:50,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-02 23:03:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:03:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:03:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:03:50,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:03:51,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:03:51,290 INFO L299 CfgBuilder]: Removed 116 assume(true) statements. [2021-11-02 23:03:51,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:03:51 BoogieIcfgContainer [2021-11-02 23:03:51,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:03:51,294 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-02 23:03:51,294 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-02 23:03:51,298 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-02 23:03:51,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 23:03:51,300 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 11:03:49" (1/3) ... [2021-11-02 23:03:51,301 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2aad6c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 11:03:51, skipping insertion in model container [2021-11-02 23:03:51,301 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 23:03:51,301 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:50" (2/3) ... [2021-11-02 23:03:51,302 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2aad6c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 11:03:51, skipping insertion in model container [2021-11-02 23:03:51,302 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 23:03:51,302 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:03:51" (3/3) ... [2021-11-02 23:03:51,303 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product20.cil.c [2021-11-02 23:03:51,363 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-02 23:03:51,363 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-02 23:03:51,363 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-02 23:03:51,363 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-02 23:03:51,363 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-02 23:03:51,363 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-02 23:03:51,363 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-02 23:03:51,364 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-02 23:03:51,386 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 83 states, 82 states have (on average 1.5) internal successors, (123), 82 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:51,423 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-11-02 23:03:51,423 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 23:03:51,423 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 23:03:51,432 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:51,432 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:51,432 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-02 23:03:51,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 83 states, 82 states have (on average 1.5) internal successors, (123), 82 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:51,450 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-11-02 23:03:51,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 23:03:51,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 23:03:51,452 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:51,452 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:51,464 INFO L791 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 56#L-1true havoc main_#res;havoc main_#t~ret56, main_~retValue_acc~8, main_~tmp~4;havoc main_~retValue_acc~8;havoc main_~tmp~4; 39#L588true havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 63#L596true main_#t~ret56 := valid_product_#res;main_~tmp~4 := main_#t~ret56;havoc main_#t~ret56; 65#L696true assume 0 != main_~tmp~4; 69#L671true ~switchedOnBeforeTS~0 := 0; 57#L520true havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 6#L541-1true [2021-11-02 23:03:51,467 INFO L793 eck$LassoCheckResult]: Loop: 6#L541-1true assume !false; 83#L723true assume test_~splverifierCounter~0 < 4; 34#L724true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 44#L732true assume !(0 != test_~tmp~5); 78#L732-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 50#L742true assume !(0 != test_~tmp___0~1); 59#L742-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 10#L752true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 55#L760-1true havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 67#L878true __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 60#L530true assume !(0 != ~pumpRunning~0); 58#L793true assume !(0 != ~systemActive~0); 27#L800true havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 32#L498true __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 22#L541true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 6#L541-1true [2021-11-02 23:03:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-11-02 23:03:51,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:51,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636803572] [2021-11-02 23:03:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:51,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:51,758 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 23:03:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:51,921 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 23:03:51,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash 675133686, now seen corresponding path program 1 times [2021-11-02 23:03:51,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:51,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126259870] [2021-11-02 23:03:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:51,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:03:52,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:52,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126259870] [2021-11-02 23:03:52,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126259870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:52,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:52,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:03:52,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810495111] [2021-11-02 23:03:52,048 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-02 23:03:52,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:52,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:03:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:03:52,066 INFO L87 Difference]: Start difference. First operand has 83 states, 82 states have (on average 1.5) internal successors, (123), 82 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2021-11-02 23:03:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:52,122 INFO L93 Difference]: Finished difference Result 159 states and 221 transitions. [2021-11-02 23:03:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:03:52,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 221 transitions. [2021-11-02 23:03:52,129 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 102 [2021-11-02 23:03:52,135 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 145 states and 206 transitions. [2021-11-02 23:03:52,136 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 145 [2021-11-02 23:03:52,137 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 145 [2021-11-02 23:03:52,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 206 transitions. [2021-11-02 23:03:52,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:03:52,139 INFO L681 BuchiCegarLoop]: Abstraction has 145 states and 206 transitions. [2021-11-02 23:03:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 206 transitions. [2021-11-02 23:03:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-11-02 23:03:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 143 states have (on average 1.4195804195804196) internal successors, (203), 142 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:52,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 203 transitions. [2021-11-02 23:03:52,180 INFO L704 BuchiCegarLoop]: Abstraction has 143 states and 203 transitions. [2021-11-02 23:03:52,180 INFO L587 BuchiCegarLoop]: Abstraction has 143 states and 203 transitions. [2021-11-02 23:03:52,180 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-02 23:03:52,180 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 143 states and 203 transitions. [2021-11-02 23:03:52,183 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 100 [2021-11-02 23:03:52,183 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 23:03:52,183 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 23:03:52,184 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:52,184 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:52,184 INFO L791 eck$LassoCheckResult]: Stem: 332#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 324#L-1 havoc main_#res;havoc main_#t~ret56, main_~retValue_acc~8, main_~tmp~4;havoc main_~retValue_acc~8;havoc main_~tmp~4; 306#L588 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 307#L596 main_#t~ret56 := valid_product_#res;main_~tmp~4 := main_#t~ret56;havoc main_#t~ret56; 328#L696 assume 0 != main_~tmp~4; 329#L671 ~switchedOnBeforeTS~0 := 0; 325#L520 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 255#L541-1 [2021-11-02 23:03:52,185 INFO L793 eck$LassoCheckResult]: Loop: 255#L541-1 assume !false; 256#L723 assume test_~splverifierCounter~0 < 4; 299#L724 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 300#L732 assume !(0 != test_~tmp~5); 304#L732-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 318#L742 assume !(0 != test_~tmp___0~1); 320#L742-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 262#L752 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 264#L760-1 havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 323#L878 __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 327#L530 assume !(0 != ~pumpRunning~0); 289#L793 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 326#L825 assume !(0 != ~pumpRunning~0); 279#L800 havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 290#L498 __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 285#L541 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 255#L541-1 [2021-11-02 23:03:52,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:52,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-11-02 23:03:52,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:52,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876087733] [2021-11-02 23:03:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:52,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:52,250 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 23:03:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:52,335 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 23:03:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:52,336 INFO L85 PathProgramCache]: Analyzing trace with hash -572685309, now seen corresponding path program 1 times [2021-11-02 23:03:52,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:52,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875009584] [2021-11-02 23:03:52,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:52,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:52,348 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 23:03:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:52,399 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 23:03:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:52,400 INFO L85 PathProgramCache]: Analyzing trace with hash -747445943, now seen corresponding path program 1 times [2021-11-02 23:03:52,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:52,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145849957] [2021-11-02 23:03:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:52,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:03:52,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:52,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145849957] [2021-11-02 23:03:52,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145849957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:52,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:52,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:03:52,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693869928] [2021-11-02 23:03:52,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:03:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:03:52,787 INFO L87 Difference]: Start difference. First operand 143 states and 203 transitions. cyclomatic complexity: 63 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:52,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:52,960 INFO L93 Difference]: Finished difference Result 398 states and 558 transitions. [2021-11-02 23:03:52,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:03:52,961 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 558 transitions. [2021-11-02 23:03:52,971 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 194 [2021-11-02 23:03:52,980 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 398 states and 558 transitions. [2021-11-02 23:03:52,981 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 398 [2021-11-02 23:03:52,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 398 [2021-11-02 23:03:52,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 398 states and 558 transitions. [2021-11-02 23:03:52,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:03:52,993 INFO L681 BuchiCegarLoop]: Abstraction has 398 states and 558 transitions. [2021-11-02 23:03:52,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 558 transitions. [2021-11-02 23:03:53,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 279. [2021-11-02 23:03:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 279 states have (on average 1.3799283154121864) internal successors, (385), 278 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 385 transitions. [2021-11-02 23:03:53,022 INFO L704 BuchiCegarLoop]: Abstraction has 279 states and 385 transitions. [2021-11-02 23:03:53,023 INFO L587 BuchiCegarLoop]: Abstraction has 279 states and 385 transitions. [2021-11-02 23:03:53,023 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-02 23:03:53,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 279 states and 385 transitions. [2021-11-02 23:03:53,025 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 194 [2021-11-02 23:03:53,025 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 23:03:53,025 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 23:03:53,026 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:53,026 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:53,026 INFO L791 eck$LassoCheckResult]: Stem: 899#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 889#L-1 havoc main_#res;havoc main_#t~ret56, main_~retValue_acc~8, main_~tmp~4;havoc main_~retValue_acc~8;havoc main_~tmp~4; 868#L588 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 869#L596 main_#t~ret56 := valid_product_#res;main_~tmp~4 := main_#t~ret56;havoc main_#t~ret56; 895#L696 assume 0 != main_~tmp~4; 896#L671 ~switchedOnBeforeTS~0 := 0; 890#L520 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 891#L541-1 [2021-11-02 23:03:53,027 INFO L793 eck$LassoCheckResult]: Loop: 891#L541-1 assume !false; 1011#L723 assume test_~splverifierCounter~0 < 4; 1012#L724 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 1066#L732 assume !(0 != test_~tmp~5); 1065#L732-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 1047#L742 assume !(0 != test_~tmp___0~1); 1039#L742-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 1038#L752 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1020#L760-1 havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 1054#L878 __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 1051#L530 assume !(0 != ~pumpRunning~0); 1049#L793 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1041#L825 assume !(0 != ~pumpRunning~0); 1031#L800 havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 1030#L498 __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 1029#L541 assume 2 != __utac_acc__Specification5_spec__3_~tmp~3;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 1028#L878-1 __utac_acc__Specification5_spec__3_#t~ret54 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret54;havoc __utac_acc__Specification5_spec__3_#t~ret54; 1027#L545 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 891#L541-1 [2021-11-02 23:03:53,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:53,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-11-02 23:03:53,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:53,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370594602] [2021-11-02 23:03:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:53,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:53,070 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 23:03:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:53,123 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 23:03:53,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:53,124 INFO L85 PathProgramCache]: Analyzing trace with hash -594781890, now seen corresponding path program 1 times [2021-11-02 23:03:53,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:53,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968552677] [2021-11-02 23:03:53,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:53,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:53,145 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 23:03:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:53,152 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 23:03:53,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:53,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1036026620, now seen corresponding path program 1 times [2021-11-02 23:03:53,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:53,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036366729] [2021-11-02 23:03:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:53,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:53,245 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 23:03:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:03:53,307 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 23:04:55,547 WARN L207 SmtUtils]: Spent 1.03 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-11-02 23:05:59,834 WARN L207 SmtUtils]: Spent 29.90 s on a formula simplification that was a NOOP. DAG size: 435 [2021-11-02 23:05:59,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 11:05:59 BoogieIcfgContainer [2021-11-02 23:05:59,999 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-02 23:06:00,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 23:06:00,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 23:06:00,000 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 23:06:00,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:03:51" (3/4) ... [2021-11-02 23:06:00,004 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-02 23:06:00,059 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 23:06:00,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 23:06:00,061 INFO L168 Benchmark]: Toolchain (without parser) took 130574.22 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 57.9 MB in the beginning and 80.9 MB in the end (delta: -23.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2021-11-02 23:06:00,061 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:06:00,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.72 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 57.7 MB in the beginning and 85.0 MB in the end (delta: -27.3 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-11-02 23:06:00,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.98 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 82.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:06:00,063 INFO L168 Benchmark]: Boogie Preprocessor took 55.50 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 80.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:06:00,064 INFO L168 Benchmark]: RCFGBuilder took 1105.16 ms. Allocated memory is still 111.1 MB. Free memory was 79.5 MB in the beginning and 70.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-11-02 23:06:00,065 INFO L168 Benchmark]: BuchiAutomizer took 128705.76 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 70.8 MB in the beginning and 84.0 MB in the end (delta: -13.3 MB). Peak memory consumption was 74.6 MB. Max. memory is 16.1 GB. [2021-11-02 23:06:00,065 INFO L168 Benchmark]: Witness Printer took 59.56 ms. Allocated memory is still 138.4 MB. Free memory was 83.0 MB in the beginning and 80.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:06:00,069 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 546.72 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 57.7 MB in the beginning and 85.0 MB in the end (delta: -27.3 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.98 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 82.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.50 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 80.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1105.16 ms. Allocated memory is still 111.1 MB. Free memory was 79.5 MB in the beginning and 70.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 128705.76 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 70.8 MB in the beginning and 84.0 MB in the end (delta: -13.3 MB). Peak memory consumption was 74.6 MB. Max. memory is 16.1 GB. * Witness Printer took 59.56 ms. Allocated memory is still 138.4 MB. Free memory was 83.0 MB in the beginning and 80.9 MB in the end (delta: 2.1 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 279 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 128.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 128.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 121 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 279 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 281 SDtfs, 458 SDslu, 422 SDs, 0 SdLazy, 92 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 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: 722]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=25227} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=25227, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ee19e8f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2386181b=0, NULL=0, NULL=25232, retValue_acc=0, NULL=0, NULL=25247, NULL=25240, methaneLevelCritical=0, NULL=25231, tmp=1, NULL=25242, tmp=0, NULL=0, NULL=0, NULL=25236, tmp___1=0, NULL=25252, NULL=0, NULL=0, NULL=25229, NULL=25233, NULL=25254, retValue_acc=0, cleanupTimeShifts=4, NULL=25228, switchedOnBeforeTS=0, NULL=25234, NULL=25246, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=0, NULL=0, NULL=25243, NULL=25256, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=25244, \result=0, NULL=25238, tmp=1, NULL=0, NULL=25230, NULL=0, NULL=0, NULL=0, NULL=0, NULL=25239, NULL=0, retValue_acc=1, NULL=0, NULL=0, NULL=25251, NULL=0, tmp___2=86, retValue_acc=1, NULL=25249, tmp___0=0, NULL=25235, splverifierCounter=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5cfbc53c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2915c7c=0, NULL=25253, NULL=25255, NULL=25237, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4fb45f11=86, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49538e01=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f22fb21=0, head=0, NULL=0, NULL=0, tmp=0, NULL=25245, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47e0011a=0, NULL=25248, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59e844b7=0, NULL=25241} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L423] int waterLevel = 1; [L424] int methaneLevelCritical = 0; [L514] int switchedOnBeforeTS ; [L610] int cleanupTimeShifts = 4; [L783] int pumpRunning = 0; [L784] int systemActive = 1; [L687] int retValue_acc ; [L688] int tmp ; [L592] int retValue_acc ; [L595] retValue_acc = 1 [L596] return (retValue_acc); [L694] tmp = valid_product() [L696] COND TRUE \read(tmp) [L519] switchedOnBeforeTS = 0 [L713] int splverifierCounter ; [L714] int tmp ; [L715] int tmp___0 ; [L716] int tmp___1 ; [L717] int tmp___2 ; [L720] splverifierCounter = 0 Loop: [L722] COND TRUE 1 [L724] COND TRUE splverifierCounter < 4 [L730] tmp = __VERIFIER_nondet_int() [L732] COND FALSE !(\read(tmp)) [L740] tmp___0 = __VERIFIER_nondet_int() [L742] COND FALSE !(\read(tmp___0)) [L750] tmp___2 = __VERIFIER_nondet_int() [L752] COND TRUE \read(tmp___2) [L956] systemActive = 1 [L874] int retValue_acc ; [L877] retValue_acc = pumpRunning [L878] return (retValue_acc); [L528] switchedOnBeforeTS = isPumpRunning() [L793] COND FALSE !(\read(pumpRunning)) [L800] COND TRUE \read(systemActive) [L822] int tmp ; [L825] COND FALSE !(\read(pumpRunning)) [L534] int tmp ; [L535] int tmp___0 ; [L494] int retValue_acc ; [L497] retValue_acc = waterLevel [L498] return (retValue_acc); [L539] tmp = getWaterLevel() [L541] COND TRUE tmp != 2 [L874] int retValue_acc ; [L877] retValue_acc = pumpRunning [L878] return (retValue_acc); [L543] tmp___0 = isPumpRunning() [L545] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-02 23:06:00,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8debff58-b20f-4b76-ab93-1b5591a6a596/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)