./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg --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 a5df7e7a530538a677becf014bfb990c6b0570c5e1058d85d7e78cec25f53253 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:19:21,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:19:21,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:19:21,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:19:21,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:19:21,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:19:21,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:19:21,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:19:21,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:19:21,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:19:21,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:19:21,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:19:21,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:19:21,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:19:21,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:19:21,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:19:21,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:19:21,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:19:21,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:19:21,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:19:21,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:19:21,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:19:21,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:19:21,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:19:21,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:19:21,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:19:21,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:19:21,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:19:21,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:19:21,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:19:21,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:19:21,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:19:21,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:19:21,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:19:21,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:19:21,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:19:21,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:19:21,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:19:21,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:19:21,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:19:21,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:19:21,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:19:21,395 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:19:21,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:19:21,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:19:21,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:19:21,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:19:21,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:19:21,399 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:19:21,399 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:19:21,399 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:19:21,400 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:19:21,401 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:19:21,401 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:19:21,401 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:19:21,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:19:21,402 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:19:21,402 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:19:21,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:19:21,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:19:21,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:19:21,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:19:21,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:19:21,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:19:21,404 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:19:21,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:19:21,404 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:19:21,404 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:19:21,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:19:21,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:19:21,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:19:21,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:19:21,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:19:21,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:19:21,407 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:19:21,407 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_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5df7e7a530538a677becf014bfb990c6b0570c5e1058d85d7e78cec25f53253 [2021-10-28 09:19:21,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:19:21,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:19:21,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:19:21,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:19:21,753 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:19:21,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c [2021-10-28 09:19:21,832 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/data/35f57c8e8/2b7ca5d85d3343378ef330596a787d23/FLAG547592579 [2021-10-28 09:19:22,397 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:19:22,398 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c [2021-10-28 09:19:22,419 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/data/35f57c8e8/2b7ca5d85d3343378ef330596a787d23/FLAG547592579 [2021-10-28 09:19:22,667 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/data/35f57c8e8/2b7ca5d85d3343378ef330596a787d23 [2021-10-28 09:19:22,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:19:22,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:19:22,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:22,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:19:22,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:19:22,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:22" (1/1) ... [2021-10-28 09:19:22,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43598012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:22, skipping insertion in model container [2021-10-28 09:19:22,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:22" (1/1) ... [2021-10-28 09:19:22,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:19:22,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:19:23,057 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_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c[19170,19183] [2021-10-28 09:19:23,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:23,081 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:19:23,208 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_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c[19170,19183] [2021-10-28 09:19:23,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:23,227 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:19:23,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23 WrapperNode [2021-10-28 09:19:23,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:23,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:19:23,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:19:23,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:19:23,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23" (1/1) ... [2021-10-28 09:19:23,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23" (1/1) ... [2021-10-28 09:19:23,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:19:23,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:19:23,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:19:23,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:19:23,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23" (1/1) ... [2021-10-28 09:19:23,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23" (1/1) ... [2021-10-28 09:19:23,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23" (1/1) ... [2021-10-28 09:19:23,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23" (1/1) ... [2021-10-28 09:19:23,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23" (1/1) ... [2021-10-28 09:19:23,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23" (1/1) ... [2021-10-28 09:19:23,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23" (1/1) ... [2021-10-28 09:19:23,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:19:23,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:19:23,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:19:23,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:19:23,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23" (1/1) ... [2021-10-28 09:19:23,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:19:23,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:19:23,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:19:23,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:19:23,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:19:23,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:19:23,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:19:23,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:19:24,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:19:24,538 INFO L299 CfgBuilder]: Removed 196 assume(true) statements. [2021-10-28 09:19:24,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:24 BoogieIcfgContainer [2021-10-28 09:19:24,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:19:24,542 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:19:24,542 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:19:24,547 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:19:24,548 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:19:24,549 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:19:22" (1/3) ... [2021-10-28 09:19:24,550 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d7ed289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:19:24, skipping insertion in model container [2021-10-28 09:19:24,550 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:19:24,551 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:23" (2/3) ... [2021-10-28 09:19:24,551 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d7ed289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:19:24, skipping insertion in model container [2021-10-28 09:19:24,551 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:19:24,552 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:24" (3/3) ... [2021-10-28 09:19:24,553 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product58.cil.c [2021-10-28 09:19:24,603 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:19:24,604 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:19:24,604 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:19:24,604 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:19:24,604 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:19:24,604 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:19:24,605 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:19:24,605 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:19:24,627 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:24,658 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-28 09:19:24,658 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:19:24,658 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:19:24,667 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:24,668 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:24,668 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:19:24,669 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:24,678 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-28 09:19:24,678 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:19:24,678 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:19:24,680 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:24,680 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:24,685 INFO L791 eck$LassoCheckResult]: Stem: 124#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 38#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 53#L890true havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 89#L898true main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 112#L986true assume 0 != main_~tmp~10; 26#L962true ~methAndRunningLastTime~0 := 0; 5#L832true havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 27#L843-1true [2021-10-28 09:19:24,686 INFO L793 eck$LassoCheckResult]: Loop: 27#L843-1true assume !false; 80#L541true assume test_~splverifierCounter~0 < 4; 9#L542true test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 136#L550true assume !(0 != test_~tmp~3); 51#L550-1true test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 18#L560true assume !(0 != test_~tmp___0~0); 104#L560-1true test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 37#L570true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 126#L578-2true assume !(0 != ~pumpRunning~0); 78#L609true assume !(0 != ~systemActive~0); 106#L616true havoc __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 83#L101-2true __utac_acc__Specification2_spec__2_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret78;havoc __utac_acc__Specification2_spec__2_#t~ret78; 71#L843true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 27#L843-1true [2021-10-28 09:19:24,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-28 09:19:24,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:24,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770738058] [2021-10-28 09:19:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:24,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:24,984 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:19:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:25,149 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:19:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash 6139403, now seen corresponding path program 1 times [2021-10-28 09:19:25,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:25,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475355152] [2021-10-28 09:19:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:25,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:25,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:25,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475355152] [2021-10-28 09:19:25,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475355152] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:25,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:25,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:19:25,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586591693] [2021-10-28 09:19:25,225 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:19:25,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:25,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:19:25,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:19:25,246 INFO L87 Difference]: Start difference. First operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:25,297 INFO L93 Difference]: Finished difference Result 136 states and 195 transitions. [2021-10-28 09:19:25,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:19:25,299 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 195 transitions. [2021-10-28 09:19:25,305 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-10-28 09:19:25,317 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 129 states and 187 transitions. [2021-10-28 09:19:25,325 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2021-10-28 09:19:25,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2021-10-28 09:19:25,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 187 transitions. [2021-10-28 09:19:25,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:25,331 INFO L681 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-10-28 09:19:25,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states and 187 transitions. [2021-10-28 09:19:25,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-10-28 09:19:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 129 states have (on average 1.449612403100775) internal successors, (187), 128 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 187 transitions. [2021-10-28 09:19:25,384 INFO L704 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-10-28 09:19:25,385 INFO L587 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-10-28 09:19:25,385 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:19:25,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 129 states and 187 transitions. [2021-10-28 09:19:25,395 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-10-28 09:19:25,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:19:25,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:19:25,396 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:25,396 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:25,396 INFO L791 eck$LassoCheckResult]: Stem: 408#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 346#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 347#L890 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 364#L898 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 396#L986 assume 0 != main_~tmp~10; 325#L962 ~methAndRunningLastTime~0 := 0; 285#L832 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 286#L843-1 [2021-10-28 09:19:25,396 INFO L793 eck$LassoCheckResult]: Loop: 286#L843-1 assume !false; 326#L541 assume test_~splverifierCounter~0 < 4; 291#L542 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 292#L550 assume !(0 != test_~tmp~3); 362#L550-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 309#L560 assume !(0 != test_~tmp___0~0); 311#L560-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 343#L570 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 345#L578-2 assume !(0 != ~pumpRunning~0); 306#L609 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 338#L667 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 339#L641-1 assume !(0 == ~pumpRunning~0); 353#L616 havoc __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 392#L101-2 __utac_acc__Specification2_spec__2_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret78;havoc __utac_acc__Specification2_spec__2_#t~ret78; 382#L843 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 286#L843-1 [2021-10-28 09:19:25,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:25,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-28 09:19:25,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:25,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085939124] [2021-10-28 09:19:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:25,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:25,461 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:19:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:25,588 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:19:25,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:25,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1675691820, now seen corresponding path program 1 times [2021-10-28 09:19:25,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:25,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268862408] [2021-10-28 09:19:25,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:25,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:25,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:25,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268862408] [2021-10-28 09:19:25,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268862408] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:25,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:25,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:19:25,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778433180] [2021-10-28 09:19:25,644 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:19:25,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:25,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:19:25,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:19:25,646 INFO L87 Difference]: Start difference. First operand 129 states and 187 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:25,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:25,765 INFO L93 Difference]: Finished difference Result 173 states and 241 transitions. [2021-10-28 09:19:25,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:19:25,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 173 states and 241 transitions. [2021-10-28 09:19:25,769 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-10-28 09:19:25,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 173 states to 173 states and 241 transitions. [2021-10-28 09:19:25,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 173 [2021-10-28 09:19:25,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 173 [2021-10-28 09:19:25,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 241 transitions. [2021-10-28 09:19:25,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:25,774 INFO L681 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-10-28 09:19:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 241 transitions. [2021-10-28 09:19:25,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-10-28 09:19:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 173 states have (on average 1.393063583815029) internal successors, (241), 172 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 241 transitions. [2021-10-28 09:19:25,786 INFO L704 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-10-28 09:19:25,786 INFO L587 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-10-28 09:19:25,786 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:19:25,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 173 states and 241 transitions. [2021-10-28 09:19:25,788 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-10-28 09:19:25,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:19:25,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:19:25,789 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:25,790 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:25,790 INFO L791 eck$LassoCheckResult]: Stem: 721#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 654#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 655#L890 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 673#L898 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 708#L986 assume 0 != main_~tmp~10; 635#L962 ~methAndRunningLastTime~0 := 0; 591#L832 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 592#L843-1 [2021-10-28 09:19:25,794 INFO L793 eck$LassoCheckResult]: Loop: 592#L843-1 assume !false; 636#L541 assume test_~splverifierCounter~0 < 4; 599#L542 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 600#L550 assume !(0 != test_~tmp~3); 671#L550-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 619#L560 assume !(0 != test_~tmp___0~0); 621#L560-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 651#L570 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 653#L578-2 assume !(0 != ~pumpRunning~0); 701#L609 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 647#L667 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 648#L641-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 703#L141-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 617#L146-1 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 618#L787-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 664#L787-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 633#L793-1 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 634#L645-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 666#L616 havoc __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 704#L101-2 __utac_acc__Specification2_spec__2_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret78;havoc __utac_acc__Specification2_spec__2_#t~ret78; 693#L843 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 592#L843-1 [2021-10-28 09:19:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:25,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-28 09:19:25,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:25,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893941387] [2021-10-28 09:19:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:25,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:25,895 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:19:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:25,995 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:19:25,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:25,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2063430786, now seen corresponding path program 1 times [2021-10-28 09:19:25,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:25,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952777346] [2021-10-28 09:19:25,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:26,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:26,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:26,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952777346] [2021-10-28 09:19:26,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952777346] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:26,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:26,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:19:26,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461253294] [2021-10-28 09:19:26,047 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:19:26,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:26,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:19:26,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:19:26,049 INFO L87 Difference]: Start difference. First operand 173 states and 241 transitions. cyclomatic complexity: 70 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:26,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:26,208 INFO L93 Difference]: Finished difference Result 481 states and 661 transitions. [2021-10-28 09:19:26,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:19:26,208 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 481 states and 661 transitions. [2021-10-28 09:19:26,217 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 338 [2021-10-28 09:19:26,227 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 481 states to 481 states and 661 transitions. [2021-10-28 09:19:26,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 481 [2021-10-28 09:19:26,231 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 481 [2021-10-28 09:19:26,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 481 states and 661 transitions. [2021-10-28 09:19:26,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:26,245 INFO L681 BuchiCegarLoop]: Abstraction has 481 states and 661 transitions. [2021-10-28 09:19:26,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states and 661 transitions. [2021-10-28 09:19:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 185. [2021-10-28 09:19:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 185 states have (on average 1.3675675675675676) internal successors, (253), 184 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 253 transitions. [2021-10-28 09:19:26,263 INFO L704 BuchiCegarLoop]: Abstraction has 185 states and 253 transitions. [2021-10-28 09:19:26,263 INFO L587 BuchiCegarLoop]: Abstraction has 185 states and 253 transitions. [2021-10-28 09:19:26,263 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:19:26,264 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 253 transitions. [2021-10-28 09:19:26,265 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-10-28 09:19:26,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:19:26,266 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:19:26,267 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:26,267 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:26,267 INFO L791 eck$LassoCheckResult]: Stem: 1400#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 1318#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1319#L890 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 1339#L898 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 1377#L986 assume 0 != main_~tmp~10; 1299#L962 ~methAndRunningLastTime~0 := 0; 1255#L832 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1256#L843-1 [2021-10-28 09:19:26,268 INFO L793 eck$LassoCheckResult]: Loop: 1256#L843-1 assume !false; 1300#L541 assume test_~splverifierCounter~0 < 4; 1263#L542 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 1264#L550 assume !(0 != test_~tmp~3); 1336#L550-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 1337#L560 assume !(0 != test_~tmp___0~0); 1433#L560-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 1315#L570 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1317#L578-2 assume !(0 != ~pumpRunning~0); 1370#L609 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1311#L667 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1312#L641-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1372#L141-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1281#L146-1 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 1282#L787-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 1328#L787-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 1297#L793-1 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 1298#L645-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 1330#L616 havoc __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1373#L101-2 __utac_acc__Specification2_spec__2_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret78;havoc __utac_acc__Specification2_spec__2_#t~ret78; 1359#L843 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 1256#L843-1 [2021-10-28 09:19:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:26,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-28 09:19:26,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:26,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807259650] [2021-10-28 09:19:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:26,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:26,326 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:19:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:26,363 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:19:26,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:26,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1383372416, now seen corresponding path program 1 times [2021-10-28 09:19:26,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:26,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865574002] [2021-10-28 09:19:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:26,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:26,369 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:19:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:26,375 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:19:26,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:26,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1138453254, now seen corresponding path program 1 times [2021-10-28 09:19:26,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:26,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206435421] [2021-10-28 09:19:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:26,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:26,405 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:19:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:26,479 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:20:31,801 WARN L207 SmtUtils]: Spent 1.08 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-28 09:21:36,204 WARN L207 SmtUtils]: Spent 30.37 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-28 09:21:36,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:21:36 BoogieIcfgContainer [2021-10-28 09:21:36,391 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:21:36,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:21:36,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:21:36,392 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:21:36,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:24" (3/4) ... [2021-10-28 09:21:36,395 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:21:36,461 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:21:36,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:21:36,463 INFO L168 Benchmark]: Toolchain (without parser) took 133791.28 ms. Allocated memory was 94.4 MB in the beginning and 155.2 MB in the end (delta: 60.8 MB). Free memory was 58.6 MB in the beginning and 61.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:36,464 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 64.4 MB in the beginning and 64.3 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:21:36,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.50 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 60.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:36,465 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.73 ms. Allocated memory is still 94.4 MB. Free memory was 60.2 MB in the beginning and 56.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:36,466 INFO L168 Benchmark]: Boogie Preprocessor took 62.35 ms. Allocated memory is still 94.4 MB. Free memory was 56.3 MB in the beginning and 53.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:36,467 INFO L168 Benchmark]: RCFGBuilder took 1139.70 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 53.2 MB in the beginning and 68.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:36,467 INFO L168 Benchmark]: BuchiAutomizer took 131849.29 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 68.0 MB in the beginning and 64.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 75.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:36,468 INFO L168 Benchmark]: Witness Printer took 69.92 ms. Allocated memory is still 155.2 MB. Free memory was 64.9 MB in the beginning and 61.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:21:36,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 64.4 MB in the beginning and 64.3 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 555.50 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 60.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.73 ms. Allocated memory is still 94.4 MB. Free memory was 60.2 MB in the beginning and 56.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.35 ms. Allocated memory is still 94.4 MB. Free memory was 56.3 MB in the beginning and 53.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1139.70 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 53.2 MB in the beginning and 68.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 131849.29 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 68.0 MB in the beginning and 64.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 75.1 MB. Max. memory is 16.1 GB. * Witness Printer took 69.92 ms. Allocated memory is still 155.2 MB. Free memory was 64.9 MB in the beginning and 61.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 185 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 131.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 131.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 296 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 185 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 729 SDtfs, 687 SDslu, 533 SDs, 0 SdLazy, 93 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 540]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31995} State at position 1 is {NULL=0, NULL=32001, NULL=0, NULL=0, NULL=31995, NULL=32006, NULL=32017, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36b6d34d=76, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3fa3b20e=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f73c43b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@248c09b5=0, tmp=0, retValue_acc=0, NULL=0, tmp___1=0, NULL=0, NULL=31998, NULL=32009, cleanupTimeShifts=4, NULL=32000, NULL=32002, tmp=1, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73e36dbf=0, NULL=0, NULL=32023, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=0, retValue_acc=1, NULL=0, \result=1, NULL=32021, NULL=0, NULL=32016, NULL=0, tmp=1, NULL=0, methAndRunningLastTime=0, NULL=32014, head=0, tmp=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=32013, NULL=32019, NULL=31997, NULL=32010, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14381913=0, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, tmp=0, NULL=0, systemActive=1, NULL=32022, NULL=0, NULL=32007, \result=0, NULL=0, NULL=32011, NULL=32003, retValue_acc=0, NULL=32020, \result=0, NULL=0, NULL=32008, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d4df7be=0, NULL=32012, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f237989=0, NULL=32018, NULL=32004, tmp___0=0, tmp___2=76, splverifierCounter=0, NULL=0, \result=0, NULL=32005, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b291693=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@442b0ad9=0, NULL=31996, NULL=31999, NULL=0, NULL=32015, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L330] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L601] int pumpRunning = 0; [L602] int systemActive = 1; [L826] int methAndRunningLastTime ; [L903] int cleanupTimeShifts = 4; [L977] int retValue_acc ; [L978] int tmp ; [L894] int retValue_acc ; [L897] retValue_acc = 1 [L898] return (retValue_acc); [L984] tmp = valid_product() [L986] COND TRUE \read(tmp) [L831] methAndRunningLastTime = 0 [L531] int splverifierCounter ; [L532] int tmp ; [L533] int tmp___0 ; [L534] int tmp___1 ; [L535] int tmp___2 ; [L538] splverifierCounter = 0 Loop: [L540] COND TRUE 1 [L542] COND TRUE splverifierCounter < 4 [L548] tmp = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp)) [L558] tmp___0 = __VERIFIER_nondet_int() [L560] COND FALSE !(\read(tmp___0)) [L568] tmp___2 = __VERIFIER_nondet_int() [L570] COND TRUE \read(tmp___2) [L820] systemActive = 1 [L609] COND FALSE !(\read(pumpRunning)) [L616] COND TRUE \read(systemActive) [L664] int tmp ; [L667] COND FALSE !(\read(pumpRunning)) [L638] int tmp ; [L641] COND TRUE ! pumpRunning [L779] int retValue_acc ; [L780] int tmp ; [L781] int tmp___0 ; [L138] int retValue_acc ; [L141] COND TRUE waterLevel < 2 [L142] retValue_acc = 1 [L143] return (retValue_acc); [L785] tmp = isHighWaterSensorDry() [L787] COND TRUE \read(tmp) [L788] tmp___0 = 0 [L792] retValue_acc = tmp___0 [L793] return (retValue_acc); [L643] tmp = isHighWaterLevel() [L645] COND FALSE !(\read(tmp)) [L836] int tmp ; [L837] int tmp___0 ; [L97] int retValue_acc ; [L100] retValue_acc = methaneLevelCritical [L101] return (retValue_acc); [L841] tmp = isMethaneLevelCritical() [L843] COND FALSE !(\read(tmp)) [L859] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:21:36,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb4b4d7-9497-48ba-b28d-8798b4437ab3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...