./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX --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 837951bb35a66379a80a07f15314d2b43ee3f47728002b8b604897c09f36abe4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:32:40,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:32:40,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:32:40,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:32:40,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:32:40,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:32:40,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:32:40,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:32:40,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:32:40,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:32:40,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:32:40,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:32:40,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:32:40,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:32:40,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:32:40,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:32:40,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:32:40,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:32:40,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:32:40,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:32:40,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:32:40,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:32:40,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:32:40,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:32:40,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:32:40,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:32:40,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:32:40,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:32:40,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:32:40,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:32:40,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:32:40,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:32:40,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:32:40,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:32:40,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:32:40,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:32:40,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:32:40,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:32:40,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:32:40,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:32:40,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:32:40,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-09 08:32:40,194 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:32:40,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:32:40,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:32:40,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:32:40,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:32:40,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:32:40,197 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:32:40,197 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-09 08:32:40,198 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-09 08:32:40,198 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-09 08:32:40,198 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-09 08:32:40,198 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-09 08:32:40,199 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-09 08:32:40,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:32:40,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:32:40,199 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:32:40,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:32:40,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:32:40,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:32:40,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-09 08:32:40,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-09 08:32:40,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-09 08:32:40,201 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:32:40,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:32:40,202 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-09 08:32:40,202 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:32:40,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-09 08:32:40,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:32:40,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:32:40,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:32:40,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:32:40,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:32:40,205 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-09 08:32:40,205 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_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 837951bb35a66379a80a07f15314d2b43ee3f47728002b8b604897c09f36abe4 [2021-11-09 08:32:40,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:32:40,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:32:40,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:32:40,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:32:40,553 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:32:40,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c [2021-11-09 08:32:40,647 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/data/5487d31c3/5ce6196963a14e069d86582c52c7d408/FLAG2bc56bd2d [2021-11-09 08:32:41,188 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:32:41,189 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c [2021-11-09 08:32:41,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/data/5487d31c3/5ce6196963a14e069d86582c52c7d408/FLAG2bc56bd2d [2021-11-09 08:32:41,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/data/5487d31c3/5ce6196963a14e069d86582c52c7d408 [2021-11-09 08:32:41,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:32:41,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:32:41,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:32:41,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:32:41,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:32:41,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:32:41" (1/1) ... [2021-11-09 08:32:41,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff0d79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:41, skipping insertion in model container [2021-11-09 08:32:41,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:32:41" (1/1) ... [2021-11-09 08:32:41,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:32:41,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:32:42,001 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_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c[18588,18601] [2021-11-09 08:32:42,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:32:42,022 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:32:42,155 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_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c[18588,18601] [2021-11-09 08:32:42,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:32:42,198 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:32:42,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42 WrapperNode [2021-11-09 08:32:42,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:32:42,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:32:42,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:32:42,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:32:42,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42" (1/1) ... [2021-11-09 08:32:42,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42" (1/1) ... [2021-11-09 08:32:42,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:32:42,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:32:42,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:32:42,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:32:42,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42" (1/1) ... [2021-11-09 08:32:42,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42" (1/1) ... [2021-11-09 08:32:42,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42" (1/1) ... [2021-11-09 08:32:42,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42" (1/1) ... [2021-11-09 08:32:42,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42" (1/1) ... [2021-11-09 08:32:42,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42" (1/1) ... [2021-11-09 08:32:42,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42" (1/1) ... [2021-11-09 08:32:42,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:32:42,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:32:42,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:32:42,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:32:42,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42" (1/1) ... [2021-11-09 08:32:42,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:32:42,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:32:42,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:32:42,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-09 08:32:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:32:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:32:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:32:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:32:43,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:32:43,523 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2021-11-09 08:32:43,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:32:43 BoogieIcfgContainer [2021-11-09 08:32:43,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:32:43,529 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-09 08:32:43,530 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-09 08:32:43,533 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-09 08:32:43,534 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:32:43,535 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 08:32:41" (1/3) ... [2021-11-09 08:32:43,536 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b9446e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 08:32:43, skipping insertion in model container [2021-11-09 08:32:43,537 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:32:43,537 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:32:42" (2/3) ... [2021-11-09 08:32:43,538 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b9446e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 08:32:43, skipping insertion in model container [2021-11-09 08:32:43,538 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:32:43,538 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:32:43" (3/3) ... [2021-11-09 08:32:43,540 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product49.cil.c [2021-11-09 08:32:43,605 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-09 08:32:43,605 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-09 08:32:43,605 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-09 08:32:43,606 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-09 08:32:43,606 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-09 08:32:43,606 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-09 08:32:43,606 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-09 08:32:43,606 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-09 08:32:43,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 120 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 119 states have internal predecessors, (183), 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) [2021-11-09 08:32:43,660 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-11-09 08:32:43,660 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:32:43,660 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:32:43,669 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-09 08:32:43,669 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:32:43,669 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-09 08:32:43,670 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 120 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 119 states have internal predecessors, (183), 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) [2021-11-09 08:32:43,681 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-11-09 08:32:43,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:32:43,681 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:32:43,682 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-09 08:32:43,682 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:32:43,687 INFO L791 eck$LassoCheckResult]: Stem: 109#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(13);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string38.base, #t~string38.offset, 1);call write~init~int(77, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(101, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(116, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(104, #t~string38.base, 4 + #t~string38.offset, 1);call write~init~int(58, #t~string38.base, 5 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 6 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string40.base, #t~string40.offset, 1);call write~init~int(82, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(73, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(84, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 4 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string42.base, #t~string42.offset, 1);call write~init~int(75, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);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(21);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(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 35#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 16#L490true havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 83#L498true main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 32#L951true assume 0 != main_~tmp~9; 62#L928true havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 43#L343-1true [2021-11-09 08:32:43,687 INFO L793 eck$LassoCheckResult]: Loop: 43#L343-1true assume !false; 41#L272true assume test_~splverifierCounter~0 < 4; 58#L273true test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 11#L281true assume !(0 != test_~tmp~4); 91#L281-1true test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 77#L291true assume !(0 != test_~tmp___0~2); 48#L291-1true test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 85#L301true assume 0 != test_~tmp___2~0; 12#L307-2true assume !(0 != ~pumpRunning~0); 114#L68true assume !(0 != ~systemActive~0); 59#L75true havoc __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_#t~ret34, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 80#L405true __utac_acc__Specification3_spec__1_#t~ret32 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret32;havoc __utac_acc__Specification3_spec__1_#t~ret32; 74#L337true assume 0 != __utac_acc__Specification3_spec__1_~tmp~5; 43#L343-1true [2021-11-09 08:32:43,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:43,694 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-11-09 08:32:43,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:43,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596268456] [2021-11-09 08:32:43,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:43,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:43,958 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:32:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:44,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:32:44,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:44,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1679775179, now seen corresponding path program 1 times [2021-11-09 08:32:44,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:44,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832796897] [2021-11-09 08:32:44,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:44,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:44,205 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:32:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:44,226 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:32:44,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash 34503759, now seen corresponding path program 1 times [2021-11-09 08:32:44,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:44,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809670256] [2021-11-09 08:32:44,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:44,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:44,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:32:44,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809670256] [2021-11-09 08:32:44,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809670256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:32:44,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:32:44,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:32:44,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195032761] [2021-11-09 08:32:44,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:32:44,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:32:44,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:32:44,677 INFO L87 Difference]: Start difference. First operand has 120 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 119 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:44,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:44,928 INFO L93 Difference]: Finished difference Result 120 states and 172 transitions. [2021-11-09 08:32:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:32:44,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 172 transitions. [2021-11-09 08:32:44,936 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-11-09 08:32:44,943 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 113 states and 165 transitions. [2021-11-09 08:32:44,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2021-11-09 08:32:44,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2021-11-09 08:32:44,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 113 states and 165 transitions. [2021-11-09 08:32:44,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:32:44,947 INFO L681 BuchiCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-11-09 08:32:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states and 165 transitions. [2021-11-09 08:32:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-09 08:32:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 113 states have (on average 1.4601769911504425) internal successors, (165), 112 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:44,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2021-11-09 08:32:44,986 INFO L704 BuchiCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-11-09 08:32:44,986 INFO L587 BuchiCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-11-09 08:32:44,987 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-09 08:32:44,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 113 states and 165 transitions. [2021-11-09 08:32:44,989 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-11-09 08:32:44,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:32:44,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:32:44,991 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-09 08:32:44,991 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:32:44,991 INFO L791 eck$LassoCheckResult]: Stem: 368#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(13);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string38.base, #t~string38.offset, 1);call write~init~int(77, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(101, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(116, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(104, #t~string38.base, 4 + #t~string38.offset, 1);call write~init~int(58, #t~string38.base, 5 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 6 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string40.base, #t~string40.offset, 1);call write~init~int(82, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(73, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(84, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 4 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string42.base, #t~string42.offset, 1);call write~init~int(75, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);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(21);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(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 310#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 280#L490 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 281#L498 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 305#L951 assume 0 != main_~tmp~9; 306#L928 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 321#L343-1 [2021-11-09 08:32:44,992 INFO L793 eck$LassoCheckResult]: Loop: 321#L343-1 assume !false; 318#L272 assume test_~splverifierCounter~0 < 4; 319#L273 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 271#L281 assume !(0 != test_~tmp~4); 273#L281-1 test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 353#L291 assume !(0 != test_~tmp___0~2); 323#L291-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 327#L301 assume 0 != test_~tmp___2~0; 274#L307-2 assume !(0 != ~pumpRunning~0); 275#L68 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 345#L126 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 346#L100-1 assume !(0 == ~pumpRunning~0); 285#L75 havoc __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_#t~ret34, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 339#L405 __utac_acc__Specification3_spec__1_#t~ret32 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret32;havoc __utac_acc__Specification3_spec__1_#t~ret32; 351#L337 assume 0 != __utac_acc__Specification3_spec__1_~tmp~5; 321#L343-1 [2021-11-09 08:32:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:44,993 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-11-09 08:32:44,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:44,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743143744] [2021-11-09 08:32:44,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:44,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:45,046 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:32:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:45,109 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:32:45,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1996917037, now seen corresponding path program 1 times [2021-11-09 08:32:45,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:45,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303880227] [2021-11-09 08:32:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:45,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:45,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:32:45,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303880227] [2021-11-09 08:32:45,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303880227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:32:45,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:32:45,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:32:45,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045840384] [2021-11-09 08:32:45,135 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-09 08:32:45,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:32:45,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:32:45,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:32:45,137 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. cyclomatic complexity: 54 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) [2021-11-09 08:32:45,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:45,257 INFO L93 Difference]: Finished difference Result 160 states and 222 transitions. [2021-11-09 08:32:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:32:45,258 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 222 transitions. [2021-11-09 08:32:45,261 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2021-11-09 08:32:45,266 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 160 states and 222 transitions. [2021-11-09 08:32:45,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 160 [2021-11-09 08:32:45,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 160 [2021-11-09 08:32:45,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 222 transitions. [2021-11-09 08:32:45,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:32:45,274 INFO L681 BuchiCegarLoop]: Abstraction has 160 states and 222 transitions. [2021-11-09 08:32:45,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 222 transitions. [2021-11-09 08:32:45,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-09 08:32:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 160 states have (on average 1.3875) internal successors, (222), 159 states have internal predecessors, (222), 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) [2021-11-09 08:32:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 222 transitions. [2021-11-09 08:32:45,307 INFO L704 BuchiCegarLoop]: Abstraction has 160 states and 222 transitions. [2021-11-09 08:32:45,308 INFO L587 BuchiCegarLoop]: Abstraction has 160 states and 222 transitions. [2021-11-09 08:32:45,308 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-09 08:32:45,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 160 states and 222 transitions. [2021-11-09 08:32:45,312 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2021-11-09 08:32:45,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:32:45,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:32:45,313 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-09 08:32:45,313 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:32:45,313 INFO L791 eck$LassoCheckResult]: Stem: 654#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(13);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string38.base, #t~string38.offset, 1);call write~init~int(77, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(101, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(116, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(104, #t~string38.base, 4 + #t~string38.offset, 1);call write~init~int(58, #t~string38.base, 5 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 6 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string40.base, #t~string40.offset, 1);call write~init~int(82, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(73, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(84, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 4 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string42.base, #t~string42.offset, 1);call write~init~int(75, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);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(21);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(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 591#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 559#L490 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 560#L498 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 585#L951 assume 0 != main_~tmp~9; 586#L928 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 601#L343-1 [2021-11-09 08:32:45,314 INFO L793 eck$LassoCheckResult]: Loop: 601#L343-1 assume !false; 598#L272 assume test_~splverifierCounter~0 < 4; 599#L273 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 550#L281 assume !(0 != test_~tmp~4); 552#L281-1 test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 633#L291 assume !(0 != test_~tmp___0~2); 603#L291-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 606#L301 assume 0 != test_~tmp___2~0; 553#L307-2 assume !(0 != ~pumpRunning~0); 554#L68 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 624#L126 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 625#L100-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 596#L445-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 597#L450-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 600#L228-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 645#L228-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 655#L234-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 656#L104-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 564#L75 havoc __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_#t~ret34, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 618#L405 __utac_acc__Specification3_spec__1_#t~ret32 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret32;havoc __utac_acc__Specification3_spec__1_#t~ret32; 631#L337 assume 0 != __utac_acc__Specification3_spec__1_~tmp~5; 601#L343-1 [2021-11-09 08:32:45,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-11-09 08:32:45,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:45,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887675596] [2021-11-09 08:32:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:45,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:45,357 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:32:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:45,408 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:32:45,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:45,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1058929087, now seen corresponding path program 1 times [2021-11-09 08:32:45,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:45,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065697559] [2021-11-09 08:32:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:45,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:45,422 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:32:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:45,435 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:32:45,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:45,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1515000281, now seen corresponding path program 1 times [2021-11-09 08:32:45,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:45,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817045888] [2021-11-09 08:32:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:45,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:45,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:32:45,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817045888] [2021-11-09 08:32:45,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817045888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:32:45,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:32:45,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:32:45,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047013788] [2021-11-09 08:32:45,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:32:45,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:32:45,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:32:45,769 INFO L87 Difference]: Start difference. First operand 160 states and 222 transitions. cyclomatic complexity: 64 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:32:45,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:45,881 INFO L93 Difference]: Finished difference Result 555 states and 776 transitions. [2021-11-09 08:32:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:32:45,881 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 555 states and 776 transitions. [2021-11-09 08:32:45,887 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 408 [2021-11-09 08:32:45,893 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 555 states to 555 states and 776 transitions. [2021-11-09 08:32:45,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 555 [2021-11-09 08:32:45,894 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 555 [2021-11-09 08:32:45,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 555 states and 776 transitions. [2021-11-09 08:32:45,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:32:45,898 INFO L681 BuchiCegarLoop]: Abstraction has 555 states and 776 transitions. [2021-11-09 08:32:45,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states and 776 transitions. [2021-11-09 08:32:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 314. [2021-11-09 08:32:45,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 314 states have (on average 1.3694267515923566) internal successors, (430), 313 states have internal predecessors, (430), 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) [2021-11-09 08:32:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 430 transitions. [2021-11-09 08:32:45,940 INFO L704 BuchiCegarLoop]: Abstraction has 314 states and 430 transitions. [2021-11-09 08:32:45,940 INFO L587 BuchiCegarLoop]: Abstraction has 314 states and 430 transitions. [2021-11-09 08:32:45,940 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-09 08:32:45,940 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 314 states and 430 transitions. [2021-11-09 08:32:45,943 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 220 [2021-11-09 08:32:45,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:32:45,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:32:45,944 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-09 08:32:45,944 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:32:45,944 INFO L791 eck$LassoCheckResult]: Stem: 1398#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(13);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string38.base, #t~string38.offset, 1);call write~init~int(77, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(101, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(116, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(104, #t~string38.base, 4 + #t~string38.offset, 1);call write~init~int(58, #t~string38.base, 5 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 6 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string40.base, #t~string40.offset, 1);call write~init~int(82, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(73, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(84, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 4 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string42.base, #t~string42.offset, 1);call write~init~int(75, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);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(21);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(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1324#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 1294#L490 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 1295#L498 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 1318#L951 assume 0 != main_~tmp~9; 1319#L928 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1334#L343-1 [2021-11-09 08:32:45,944 INFO L793 eck$LassoCheckResult]: Loop: 1334#L343-1 assume !false; 1335#L272 assume test_~splverifierCounter~0 < 4; 1355#L273 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 1283#L281 assume !(0 != test_~tmp~4); 1285#L281-1 test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 1373#L291 assume !(0 != test_~tmp___0~2); 1340#L291-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 1341#L301 assume 0 != test_~tmp___2~0; 1286#L307-2 assume !(0 != ~pumpRunning~0); 1287#L68 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1402#L126 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1550#L100-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1548#L445-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1546#L450-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 1544#L228-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 1540#L228-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1539#L234-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1405#L104-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1297#L75 havoc __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_#t~ret34, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 1554#L405 __utac_acc__Specification3_spec__1_#t~ret32 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret32;havoc __utac_acc__Specification3_spec__1_#t~ret32; 1431#L337 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~5);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1432#L437 __utac_acc__Specification3_spec__1_#t~ret33 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret33;havoc __utac_acc__Specification3_spec__1_#t~ret33; 1379#L343 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 1334#L343-1 [2021-11-09 08:32:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:45,945 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-11-09 08:32:45,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:45,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038592154] [2021-11-09 08:32:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:45,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:45,977 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:32:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:46,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:32:46,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:46,017 INFO L85 PathProgramCache]: Analyzing trace with hash -276388655, now seen corresponding path program 1 times [2021-11-09 08:32:46,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:46,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087154941] [2021-11-09 08:32:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:46,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:46,023 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:32:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:46,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:32:46,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:46,032 INFO L85 PathProgramCache]: Analyzing trace with hash -78635413, now seen corresponding path program 1 times [2021-11-09 08:32:46,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:46,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363337281] [2021-11-09 08:32:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:46,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:46,064 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:32:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:32:46,119 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:33:48,436 WARN L207 SmtUtils]: Spent 1.03 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-11-09 08:34:58,716 WARN L207 SmtUtils]: Spent 35.08 s on a formula simplification that was a NOOP. DAG size: 433 [2021-11-09 08:34:58,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 08:34:58 BoogieIcfgContainer [2021-11-09 08:34:58,900 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-09 08:34:58,900 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:34:58,900 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:34:58,901 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:34:58,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:32:43" (3/4) ... [2021-11-09 08:34:58,904 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-09 08:34:58,964 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 08:34:58,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:34:58,965 INFO L168 Benchmark]: Toolchain (without parser) took 137454.55 ms. Allocated memory was 102.8 MB in the beginning and 155.2 MB in the end (delta: 52.4 MB). Free memory was 71.1 MB in the beginning and 46.1 MB in the end (delta: 25.0 MB). Peak memory consumption was 76.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:58,966 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 102.8 MB. Free memory is still 59.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:34:58,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.50 ms. Allocated memory is still 102.8 MB. Free memory was 71.1 MB in the beginning and 71.5 MB in the end (delta: -460.9 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:58,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.33 ms. Allocated memory is still 102.8 MB. Free memory was 71.5 MB in the beginning and 67.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:58,968 INFO L168 Benchmark]: Boogie Preprocessor took 63.05 ms. Allocated memory is still 102.8 MB. Free memory was 67.9 MB in the beginning and 65.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:58,969 INFO L168 Benchmark]: RCFGBuilder took 1158.28 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 65.4 MB in the beginning and 83.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:58,969 INFO L168 Benchmark]: BuchiAutomizer took 135370.67 ms. Allocated memory was 123.7 MB in the beginning and 155.2 MB in the end (delta: 31.5 MB). Free memory was 83.9 MB in the beginning and 48.2 MB in the end (delta: 35.6 MB). Peak memory consumption was 80.7 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:58,970 INFO L168 Benchmark]: Witness Printer took 63.81 ms. Allocated memory is still 155.2 MB. Free memory was 48.2 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:34:58,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 102.8 MB. Free memory is still 59.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 681.50 ms. Allocated memory is still 102.8 MB. Free memory was 71.1 MB in the beginning and 71.5 MB in the end (delta: -460.9 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.33 ms. Allocated memory is still 102.8 MB. Free memory was 71.5 MB in the beginning and 67.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.05 ms. Allocated memory is still 102.8 MB. Free memory was 67.9 MB in the beginning and 65.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1158.28 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 65.4 MB in the beginning and 83.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 135370.67 ms. Allocated memory was 123.7 MB in the beginning and 155.2 MB in the end (delta: 31.5 MB). Free memory was 83.9 MB in the beginning and 48.2 MB in the end (delta: 35.6 MB). Peak memory consumption was 80.7 MB. Max. memory is 16.1 GB. * Witness Printer took 63.81 ms. Allocated memory is still 155.2 MB. Free memory was 48.2 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 314 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 135.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 134.4s. 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 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 241 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 314 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 566 SDtfs, 1292 SDslu, 857 SDs, 0 SdLazy, 81 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 271]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=25417} State at position 1 is {NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e841f91=0, NULL=25417, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ff28355=0, NULL=0, NULL=25437, NULL=25442, NULL=25428, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32caa3bb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3158988c=0, tmp=0, NULL=0, retValue_acc=0, NULL=25435, NULL=0, tmp___1=0, NULL=25422, NULL=0, NULL=25425, cleanupTimeShifts=4, NULL=25441, tmp=0, NULL=25423, NULL=0, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1bd94969=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@738e249=0, NULL=25430, \result=1, head=0, pumpRunning=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c5b65b1=0, NULL=25429, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@390204b2=0, NULL=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f9d1813=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a5ccac2=61, NULL=0, NULL=0, NULL=25440, NULL=0, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@678324ae=0, NULL=0, NULL=0, tmp___0=0, retValue_acc=1, NULL=25427, NULL=25436, tmp=0, head=0, tmp=1, NULL=25420, NULL=25421, NULL=0, NULL=0, NULL=25445, tmp___0=0, NULL=0, NULL=0, NULL=25426, NULL=0, NULL=0, tmp=0, NULL=25431, tmp___0=1, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=25439, \result=1, \result=0, retValue_acc=0, NULL=25443, retValue_acc=0, \result=0, NULL=25424, NULL=0, NULL=25444, NULL=0, NULL=0, NULL=25434, retValue_acc=1, NULL=25418, tmp___2=61, splverifierCounter=0, NULL=0, \result=0, NULL=25432, tmp___1=0, NULL=25419, NULL=25433, NULL=0, NULL=0, NULL=25438} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L362] int waterLevel = 1; [L363] int methaneLevelCritical = 0; [L672] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L869] int cleanupTimeShifts = 4; [L942] int retValue_acc ; [L943] int tmp ; [L494] int retValue_acc ; [L497] retValue_acc = 1 [L498] return (retValue_acc); [L949] tmp = valid_product() [L951] COND TRUE \read(tmp) [L262] int splverifierCounter ; [L263] int tmp ; [L264] int tmp___0 ; [L265] int tmp___1 ; [L266] int tmp___2 ; [L269] splverifierCounter = 0 Loop: [L271] COND TRUE 1 [L273] COND TRUE splverifierCounter < 4 [L279] tmp = __VERIFIER_nondet_int() [L281] COND FALSE !(\read(tmp)) [L289] tmp___0 = __VERIFIER_nondet_int() [L291] COND FALSE !(\read(tmp___0)) [L299] tmp___2 = __VERIFIER_nondet_int() [L301] COND TRUE \read(tmp___2) [L68] COND FALSE !(\read(pumpRunning)) [L75] COND TRUE \read(systemActive) [L123] int tmp ; [L126] COND FALSE !(\read(pumpRunning)) [L97] int tmp ; [L100] COND TRUE ! pumpRunning [L220] int retValue_acc ; [L221] int tmp ; [L222] int tmp___0 ; [L442] int retValue_acc ; [L445] COND TRUE waterLevel < 2 [L446] retValue_acc = 1 [L447] return (retValue_acc); [L226] tmp = isHighWaterSensorDry() [L228] COND TRUE \read(tmp) [L229] tmp___0 = 0 [L233] retValue_acc = tmp___0 [L234] return (retValue_acc); [L102] tmp = isHighWaterLevel() [L104] COND FALSE !(\read(tmp)) [L329] int tmp ; [L330] int tmp___0 ; [L331] int tmp___1 ; [L401] int retValue_acc ; [L404] retValue_acc = methaneLevelCritical [L405] return (retValue_acc); [L335] tmp = isMethaneLevelCritical() [L337] COND FALSE !(\read(tmp)) [L433] int retValue_acc ; [L436] retValue_acc = waterLevel [L437] return (retValue_acc); [L341] tmp___0 = getWaterLevel() [L343] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-09 08:34:59,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea3477c-81d9-4d8f-bc79-fb484c82e9e0/bin/uautomizer-IVEQpCNsaX/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)