./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product54.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_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/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_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/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_2ed48883-d008-4752-9a84-4885ad0862dd/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 cbcb1e9315abec7fabb6a689d6a1c811fb94154c71589df191460c14d014c3cb .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 09:54:53,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:54:53,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:54:53,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:54:53,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:54:53,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:54:53,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:54:53,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:54:53,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:54:53,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:54:53,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:54:53,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:54:53,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:54:53,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:54:53,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:54:53,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:54:53,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:54:53,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:54:53,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:54:53,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:54:53,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:54:53,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:54:53,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:54:53,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:54:53,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:54:53,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:54:53,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:54:53,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:54:53,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:54:53,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:54:53,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:54:53,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:54:53,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:54:53,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:54:53,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:54:53,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:54:53,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:54:53,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:54:53,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:54:53,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:54:53,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:54:53,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:54:53,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:54:53,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:54:53,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:54:53,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:54:53,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:54:53,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:54:53,681 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:54:53,682 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:54:53,682 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:54:53,683 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:54:53,684 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:54:53,685 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:54:53,685 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:54:53,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:54:53,686 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:54:53,686 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:54:53,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:54:53,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:54:53,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:54:53,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:54:53,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:54:53,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:54:53,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:54:53,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:54:53,690 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:54:53,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:54:53,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:54:53,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:54:53,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:54:53,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:54:53,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:54:53,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:54:53,696 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:54:53,696 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_2ed48883-d008-4752-9a84-4885ad0862dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbcb1e9315abec7fabb6a689d6a1c811fb94154c71589df191460c14d014c3cb [2021-10-28 09:54:54,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:54:54,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:54:54,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:54:54,077 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:54:54,078 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:54:54,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c [2021-10-28 09:54:54,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/data/9905a8f22/cae36b4aa2d244acbc0ec62bbbd17d81/FLAGe581ade03 [2021-10-28 09:54:54,899 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:54:54,900 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c [2021-10-28 09:54:54,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/data/9905a8f22/cae36b4aa2d244acbc0ec62bbbd17d81/FLAGe581ade03 [2021-10-28 09:54:55,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/data/9905a8f22/cae36b4aa2d244acbc0ec62bbbd17d81 [2021-10-28 09:54:55,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:54:55,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:54:55,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:54:55,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:54:55,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:54:55,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:55,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e051250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55, skipping insertion in model container [2021-10-28 09:54:55,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:55,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:54:55,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:54:55,600 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_2ed48883-d008-4752-9a84-4885ad0862dd/sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c[4478,4491] [2021-10-28 09:54:55,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:54:55,764 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:54:55,798 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_2ed48883-d008-4752-9a84-4885ad0862dd/sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c[4478,4491] [2021-10-28 09:54:55,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:54:55,872 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:54:55,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55 WrapperNode [2021-10-28 09:54:55,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:54:55,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:54:55,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:54:55,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:54:55,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:55,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:55,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:54:55,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:54:55,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:54:55,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:54:56,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:56,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:56,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:56,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:56,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:56,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:56,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:56,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:54:56,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:54:56,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:54:56,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:54:56,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55" (1/1) ... [2021-10-28 09:54:56,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:54:56,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:54:56,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:54:56,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:54:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:54:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:54:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:54:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:54:57,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:54:57,546 INFO L299 CfgBuilder]: Removed 284 assume(true) statements. [2021-10-28 09:54:57,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:54:57 BoogieIcfgContainer [2021-10-28 09:54:57,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:54:57,551 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:54:57,551 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:54:57,555 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:54:57,557 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:54:57,557 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:54:55" (1/3) ... [2021-10-28 09:54:57,559 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@299af285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:54:57, skipping insertion in model container [2021-10-28 09:54:57,559 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:54:57,559 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:55" (2/3) ... [2021-10-28 09:54:57,560 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@299af285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:54:57, skipping insertion in model container [2021-10-28 09:54:57,560 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:54:57,560 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:54:57" (3/3) ... [2021-10-28 09:54:57,562 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2021-10-28 09:54:57,619 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:54:57,620 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:54:57,620 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:54:57,620 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:54:57,620 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:54:57,621 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:54:57,621 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:54:57,621 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:54:57,648 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 192 states, 191 states have (on average 1.5392670157068062) internal successors, (294), 191 states have internal predecessors, (294), 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 09:54:57,688 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-10-28 09:54:57,688 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:54:57,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:54:57,699 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:54:57,700 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:57,700 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:54:57,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 192 states, 191 states have (on average 1.5392670157068062) internal successors, (294), 191 states have internal predecessors, (294), 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 09:54:57,714 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-10-28 09:54:57,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:54:57,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:54:57,716 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:54:57,716 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:57,723 INFO L791 eck$LassoCheckResult]: Stem: 157#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~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 58#L-1true havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 48#L329true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 106#L337true main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 8#L249true assume 0 != main_~tmp~0; 120#L222true havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 90#L288-1true [2021-10-28 09:54:57,724 INFO L793 eck$LassoCheckResult]: Loop: 90#L288-1true assume !false; 39#L720true assume test_~splverifierCounter~0 < 4; 118#L721true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 53#L729true assume !(0 != test_~tmp~5); 65#L729-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 4#L739true assume !(0 != test_~tmp___0~1); 150#L739-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 6#L749true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 74#L757-2true assume !(0 != ~pumpRunning~0); 178#L785true assume !(0 != ~systemActive~0); 15#L792true havoc __utac_acc__Specification3_spec__1_#t~ret18, __utac_acc__Specification3_spec__1_#t~ret19, __utac_acc__Specification3_spec__1_#t~ret20, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 27#L101-1true __utac_acc__Specification3_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret18;havoc __utac_acc__Specification3_spec__1_#t~ret18; 5#L282true assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 90#L288-1true [2021-10-28 09:54:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:57,732 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 09:54:57,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:57,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422392110] [2021-10-28 09:54:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:57,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:58,050 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:54:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:58,358 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:54:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1675526986, now seen corresponding path program 1 times [2021-10-28 09:54:58,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:58,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250641637] [2021-10-28 09:54:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:58,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:58,491 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 09:54:58,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:58,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250641637] [2021-10-28 09:54:58,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250641637] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:58,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:58,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:54:58,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167443166] [2021-10-28 09:54:58,502 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:54:58,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:54:58,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:54:58,523 INFO L87 Difference]: Start difference. First operand has 192 states, 191 states have (on average 1.5392670157068062) internal successors, (294), 191 states have internal predecessors, (294), 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 09:54:58,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:58,584 INFO L93 Difference]: Finished difference Result 192 states and 284 transitions. [2021-10-28 09:54:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:54:58,587 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 192 states and 284 transitions. [2021-10-28 09:54:58,593 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-10-28 09:54:58,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 192 states to 185 states and 276 transitions. [2021-10-28 09:54:58,610 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 185 [2021-10-28 09:54:58,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 185 [2021-10-28 09:54:58,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 276 transitions. [2021-10-28 09:54:58,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:58,618 INFO L681 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2021-10-28 09:54:58,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 276 transitions. [2021-10-28 09:54:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-10-28 09:54:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 185 states have (on average 1.491891891891892) internal successors, (276), 184 states have internal predecessors, (276), 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 09:54:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2021-10-28 09:54:58,684 INFO L704 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2021-10-28 09:54:58,684 INFO L587 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2021-10-28 09:54:58,684 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:54:58,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 276 transitions. [2021-10-28 09:54:58,688 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-10-28 09:54:58,688 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:54:58,688 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:54:58,690 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:54:58,690 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:58,690 INFO L791 eck$LassoCheckResult]: Stem: 573#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~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 484#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 471#L329 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 472#L337 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 404#L249 assume 0 != main_~tmp~0; 405#L222 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 397#L288-1 [2021-10-28 09:54:58,691 INFO L793 eck$LassoCheckResult]: Loop: 397#L288-1 assume !false; 457#L720 assume test_~splverifierCounter~0 < 4; 458#L721 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 477#L729 assume !(0 != test_~tmp~5); 479#L729-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 393#L739 assume !(0 != test_~tmp___0~1); 394#L739-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 399#L749 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 400#L757-2 assume !(0 != ~pumpRunning~0); 435#L785 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret63, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 501#L869 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret62, processEnvironment__wrappee__lowWaterSensor_~tmp~7;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~7; 449#L843-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 451#L817-3 assume !(0 == ~pumpRunning~0); 414#L792 havoc __utac_acc__Specification3_spec__1_#t~ret18, __utac_acc__Specification3_spec__1_#t~ret19, __utac_acc__Specification3_spec__1_#t~ret20, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 419#L101-1 __utac_acc__Specification3_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret18;havoc __utac_acc__Specification3_spec__1_#t~ret18; 396#L282 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 397#L288-1 [2021-10-28 09:54:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 09:54:58,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:58,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387141665] [2021-10-28 09:54:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:58,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:58,760 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:54:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:58,884 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:54:58,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:58,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1905346327, now seen corresponding path program 1 times [2021-10-28 09:54:58,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:58,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435884363] [2021-10-28 09:54:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:58,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:58,922 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 09:54:58,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:58,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435884363] [2021-10-28 09:54:58,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435884363] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:58,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:58,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:54:58,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711807724] [2021-10-28 09:54:58,931 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:54:58,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:58,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:54:58,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:54:58,936 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. cyclomatic complexity: 93 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 09:54:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:59,133 INFO L93 Difference]: Finished difference Result 196 states and 273 transitions. [2021-10-28 09:54:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:54:59,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 273 transitions. [2021-10-28 09:54:59,142 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 134 [2021-10-28 09:54:59,149 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 196 states and 273 transitions. [2021-10-28 09:54:59,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 196 [2021-10-28 09:54:59,150 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 196 [2021-10-28 09:54:59,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 196 states and 273 transitions. [2021-10-28 09:54:59,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:59,153 INFO L681 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2021-10-28 09:54:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states and 273 transitions. [2021-10-28 09:54:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-28 09:54:59,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 196 states have (on average 1.3928571428571428) internal successors, (273), 195 states have internal predecessors, (273), 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 09:54:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 273 transitions. [2021-10-28 09:54:59,167 INFO L704 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2021-10-28 09:54:59,167 INFO L587 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2021-10-28 09:54:59,167 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:54:59,167 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 196 states and 273 transitions. [2021-10-28 09:54:59,170 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 134 [2021-10-28 09:54:59,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:54:59,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:54:59,176 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:54:59,177 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:59,177 INFO L791 eck$LassoCheckResult]: Stem: 933#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~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 857#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 845#L329 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 846#L337 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 791#L249 assume 0 != main_~tmp~0; 792#L222 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 914#L288-1 [2021-10-28 09:54:59,178 INFO L793 eck$LassoCheckResult]: Loop: 914#L288-1 assume !false; 949#L720 assume test_~splverifierCounter~0 < 4; 948#L721 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 947#L729 assume !(0 != test_~tmp~5); 945#L729-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 944#L739 assume !(0 != test_~tmp___0~1); 942#L739-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 941#L749 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 876#L757-2 assume !(0 != ~pumpRunning~0); 877#L785 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret63, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 870#L869 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret62, processEnvironment__wrappee__lowWaterSensor_~tmp~7;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~7; 827#L843-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 828#L817-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 931#L141-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 902#L146-3 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 903#L971-9 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 911#L971-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 912#L977-3 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 850#L821-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 851#L792 havoc __utac_acc__Specification3_spec__1_#t~ret18, __utac_acc__Specification3_spec__1_#t~ret19, __utac_acc__Specification3_spec__1_#t~ret20, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 955#L101-1 __utac_acc__Specification3_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret18;havoc __utac_acc__Specification3_spec__1_#t~ret18; 950#L282 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 914#L288-1 [2021-10-28 09:54:59,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:59,178 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 09:54:59,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:59,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868914662] [2021-10-28 09:54:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:59,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:59,272 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:54:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:59,372 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:54:59,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:59,373 INFO L85 PathProgramCache]: Analyzing trace with hash -659266411, now seen corresponding path program 1 times [2021-10-28 09:54:59,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:59,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898656188] [2021-10-28 09:54:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:59,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:59,380 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:54:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:59,389 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:54:59,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:59,390 INFO L85 PathProgramCache]: Analyzing trace with hash 594038715, now seen corresponding path program 1 times [2021-10-28 09:54:59,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:59,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16841380] [2021-10-28 09:54:59,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:59,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:59,545 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 09:54:59,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:59,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16841380] [2021-10-28 09:54:59,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16841380] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:59,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:59,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:54:59,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028750028] [2021-10-28 09:54:59,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:59,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:54:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:54:59,848 INFO L87 Difference]: Start difference. First operand 196 states and 273 transitions. cyclomatic complexity: 79 Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 09:55:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:00,020 INFO L93 Difference]: Finished difference Result 656 states and 915 transitions. [2021-10-28 09:55:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:55:00,023 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 656 states and 915 transitions. [2021-10-28 09:55:00,034 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 472 [2021-10-28 09:55:00,044 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 656 states to 656 states and 915 transitions. [2021-10-28 09:55:00,044 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 656 [2021-10-28 09:55:00,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 656 [2021-10-28 09:55:00,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 656 states and 915 transitions. [2021-10-28 09:55:00,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:55:00,054 INFO L681 BuchiCegarLoop]: Abstraction has 656 states and 915 transitions. [2021-10-28 09:55:00,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states and 915 transitions. [2021-10-28 09:55:00,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 386. [2021-10-28 09:55:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 386 states have (on average 1.378238341968912) internal successors, (532), 385 states have internal predecessors, (532), 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 09:55:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 532 transitions. [2021-10-28 09:55:00,105 INFO L704 BuchiCegarLoop]: Abstraction has 386 states and 532 transitions. [2021-10-28 09:55:00,106 INFO L587 BuchiCegarLoop]: Abstraction has 386 states and 532 transitions. [2021-10-28 09:55:00,106 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:55:00,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 386 states and 532 transitions. [2021-10-28 09:55:00,111 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 268 [2021-10-28 09:55:00,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:55:00,112 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:55:00,113 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:55:00,114 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:55:00,114 INFO L791 eck$LassoCheckResult]: Stem: 1816#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~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1729#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 1720#L329 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 1721#L337 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 1660#L249 assume 0 != main_~tmp~0; 1661#L222 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1765#L288-1 [2021-10-28 09:55:00,114 INFO L793 eck$LassoCheckResult]: Loop: 1765#L288-1 assume !false; 1706#L720 assume test_~splverifierCounter~0 < 4; 1707#L721 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 1724#L729 assume !(0 != test_~tmp~5); 1726#L729-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 2033#L739 assume !(0 != test_~tmp___0~1); 2032#L739-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 2031#L749 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2029#L757-2 assume !(0 != ~pumpRunning~0); 2005#L785 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret63, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 2028#L869 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret62, processEnvironment__wrappee__lowWaterSensor_~tmp~7;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~7; 1990#L843-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 2027#L817-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 2026#L141-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 2023#L146-3 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 2010#L971-9 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 2008#L971-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1824#L977-3 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 1722#L821-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1673#L792 havoc __utac_acc__Specification3_spec__1_#t~ret18, __utac_acc__Specification3_spec__1_#t~ret19, __utac_acc__Specification3_spec__1_#t~ret20, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1674#L101-1 __utac_acc__Specification3_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret18;havoc __utac_acc__Specification3_spec__1_#t~ret18; 1653#L282 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~1);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1654#L133 __utac_acc__Specification3_spec__1_#t~ret19 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret19;havoc __utac_acc__Specification3_spec__1_#t~ret19; 1972#L288 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1765#L288-1 [2021-10-28 09:55:00,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 09:55:00,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:00,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35422764] [2021-10-28 09:55:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:00,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:00,164 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:00,226 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:00,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:00,227 INFO L85 PathProgramCache]: Analyzing trace with hash 2100150183, now seen corresponding path program 1 times [2021-10-28 09:55:00,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:00,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587347645] [2021-10-28 09:55:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:00,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:00,237 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:00,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:00,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:00,256 INFO L85 PathProgramCache]: Analyzing trace with hash -359433907, now seen corresponding path program 1 times [2021-10-28 09:55:00,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:00,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915225839] [2021-10-28 09:55:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:00,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:00,317 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:00,436 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:56:15,527 WARN L207 SmtUtils]: Spent 1.25 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 09:57:30,074 WARN L207 SmtUtils]: Spent 39.02 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 09:57:30,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:57:30 BoogieIcfgContainer [2021-10-28 09:57:30,232 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:57:30,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:57:30,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:57:30,234 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:57:30,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:54:57" (3/4) ... [2021-10-28 09:57:30,238 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:57:30,302 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:57:30,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:57:30,304 INFO L168 Benchmark]: Toolchain (without parser) took 155129.40 ms. Allocated memory was 115.3 MB in the beginning and 222.3 MB in the end (delta: 107.0 MB). Free memory was 85.3 MB in the beginning and 91.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 101.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:30,304 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 115.3 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:57:30,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.60 ms. Allocated memory is still 115.3 MB. Free memory was 85.2 MB in the beginning and 82.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:30,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 117.26 ms. Allocated memory is still 115.3 MB. Free memory was 82.4 MB in the beginning and 77.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:30,307 INFO L168 Benchmark]: Boogie Preprocessor took 72.80 ms. Allocated memory is still 115.3 MB. Free memory was 77.8 MB in the beginning and 74.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:30,307 INFO L168 Benchmark]: RCFGBuilder took 1484.09 ms. Allocated memory was 115.3 MB in the beginning and 157.3 MB in the end (delta: 41.9 MB). Free memory was 74.0 MB in the beginning and 99.7 MB in the end (delta: -25.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:30,308 INFO L168 Benchmark]: BuchiAutomizer took 152681.67 ms. Allocated memory was 157.3 MB in the beginning and 222.3 MB in the end (delta: 65.0 MB). Free memory was 99.7 MB in the beginning and 93.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 108.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:30,309 INFO L168 Benchmark]: Witness Printer took 69.35 ms. Allocated memory is still 222.3 MB. Free memory was 93.9 MB in the beginning and 91.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:30,313 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 115.3 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 691.60 ms. Allocated memory is still 115.3 MB. Free memory was 85.2 MB in the beginning and 82.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 117.26 ms. Allocated memory is still 115.3 MB. Free memory was 82.4 MB in the beginning and 77.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.80 ms. Allocated memory is still 115.3 MB. Free memory was 77.8 MB in the beginning and 74.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1484.09 ms. Allocated memory was 115.3 MB in the beginning and 157.3 MB in the end (delta: 41.9 MB). Free memory was 74.0 MB in the beginning and 99.7 MB in the end (delta: -25.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 152681.67 ms. Allocated memory was 157.3 MB in the beginning and 222.3 MB in the end (delta: 65.0 MB). Free memory was 99.7 MB in the beginning and 93.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 108.3 MB. Max. memory is 16.1 GB. * Witness Printer took 69.35 ms. Allocated memory is still 222.3 MB. Free memory was 93.9 MB in the beginning and 91.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 386 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 152.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 151.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 270 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 386 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 818 SDtfs, 1302 SDslu, 1078 SDs, 0 SdLazy, 116 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 719]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=14883} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1879213=0, NULL=22871, NULL=14883, NULL=0, NULL=0, NULL=0, methaneLevelCritical=0, NULL=22852, tmp=0, NULL=0, NULL=22869, tmp___1=0, NULL=0, tmp=0, cleanupTimeShifts=4, NULL=22861, NULL=22857, NULL=22859, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1447c33e=0, NULL=0, NULL=22863, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, NULL=22865, retValue_acc=1, NULL=0, \result=1, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, tmp___0=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1856b18=0, NULL=22855, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a5b2312=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cfab5ca=0, tmp=0, NULL=22862, retValue_acc=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=22867, NULL=22872, tmp___0=0, NULL=0, tmp=0, NULL=22856, NULL=22875, NULL=0, NULL=0, NULL=0, tmp___0=1, NULL=22854, tmp=0, NULL=22851, NULL=0, systemActive=1, \result=1, NULL=0, NULL=22860, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d49af6b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31e5285b=0, NULL=0, NULL=14885, NULL=22853, \result=0, NULL=22874, NULL=22864, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f66a1d=0, retValue_acc=1, NULL=14884, tmp___2=56, splverifierCounter=0, NULL=0, \result=0, NULL=22873, NULL=22868, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40df215a=56, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78cc909b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1442743d=0, tmp___1=0, NULL=22858, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3126a9dc=0, NULL=22850, NULL=22866, NULL=22870} - 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; [L161] int cleanupTimeShifts = 4; [L511] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L778] int pumpRunning = 0; [L779] int systemActive = 1; [L240] int retValue_acc ; [L241] int tmp ; [L333] int retValue_acc ; [L336] retValue_acc = 1 [L337] return (retValue_acc); [L247] tmp = valid_product() [L249] COND TRUE \read(tmp) [L710] int splverifierCounter ; [L711] int tmp ; [L712] int tmp___0 ; [L713] int tmp___1 ; [L714] int tmp___2 ; [L717] splverifierCounter = 0 Loop: [L719] COND TRUE 1 [L721] COND TRUE splverifierCounter < 4 [L727] tmp = __VERIFIER_nondet_int() [L729] COND FALSE !(\read(tmp)) [L737] tmp___0 = __VERIFIER_nondet_int() [L739] COND FALSE !(\read(tmp___0)) [L747] tmp___2 = __VERIFIER_nondet_int() [L749] COND TRUE \read(tmp___2) [L1004] systemActive = 1 [L785] COND FALSE !(\read(pumpRunning)) [L792] COND TRUE \read(systemActive) [L866] int tmp ; [L869] COND FALSE !(\read(pumpRunning)) [L840] int tmp ; [L843] COND FALSE !(\read(pumpRunning)) [L814] int tmp ; [L817] COND TRUE ! pumpRunning [L963] int retValue_acc ; [L964] int tmp ; [L965] int tmp___0 ; [L138] int retValue_acc ; [L141] COND TRUE waterLevel < 2 [L142] retValue_acc = 1 [L143] return (retValue_acc); [L969] tmp = isHighWaterSensorDry() [L971] COND TRUE \read(tmp) [L972] tmp___0 = 0 [L976] retValue_acc = tmp___0 [L977] return (retValue_acc); [L819] tmp = isHighWaterLevel() [L821] COND FALSE !(\read(tmp)) [L274] int tmp ; [L275] int tmp___0 ; [L276] int tmp___1 ; [L97] int retValue_acc ; [L100] retValue_acc = methaneLevelCritical [L101] return (retValue_acc); [L280] tmp = isMethaneLevelCritical() [L282] COND FALSE !(\read(tmp)) [L129] int retValue_acc ; [L132] retValue_acc = waterLevel [L133] return (retValue_acc); [L286] tmp___0 = getWaterLevel() [L288] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:57:30,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed48883-d008-4752-9a84-4885ad0862dd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...