./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 449370313253a0d5d7b509b2cd15e912fe8e85dcb7140575e7078385cf7fc6cf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:14:49,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:14:49,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:14:49,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:14:49,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:14:49,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:14:49,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:14:49,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:14:49,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:14:49,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:14:49,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:14:49,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:14:49,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:14:49,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:14:49,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:14:49,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:14:49,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:14:49,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:14:49,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:14:49,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:14:49,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:14:49,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:14:49,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:14:49,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:14:49,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:14:49,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:14:49,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:14:49,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:14:49,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:14:49,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:14:49,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:14:49,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:14:49,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:14:49,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:14:49,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:14:49,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:14:49,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:14:49,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:14:49,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:14:49,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:14:49,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:14:49,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-02 22:14:49,533 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:14:49,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:14:49,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:14:49,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:14:49,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:14:49,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:14:49,536 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:14:49,537 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-02 22:14:49,537 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-02 22:14:49,537 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-02 22:14:49,538 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-02 22:14:49,538 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-02 22:14:49,538 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-02 22:14:49,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:14:49,539 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:14:49,539 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:14:49,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:14:49,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:14:49,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:14:49,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-02 22:14:49,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-02 22:14:49,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-02 22:14:49,542 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:14:49,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:14:49,542 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-02 22:14:49,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:14:49,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-02 22:14:49,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:14:49,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:14:49,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:14:49,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:14:49,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:14:49,546 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-02 22:14:49,546 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_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 449370313253a0d5d7b509b2cd15e912fe8e85dcb7140575e7078385cf7fc6cf [2021-11-02 22:14:49,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:14:50,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:14:50,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:14:50,014 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:14:50,016 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:14:50,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c [2021-11-02 22:14:50,114 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/data/b1175d5b2/edb880828fa54b42b2845e2a6afcce60/FLAGb5d341b72 [2021-11-02 22:14:50,773 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:14:50,774 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c [2021-11-02 22:14:50,810 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/data/b1175d5b2/edb880828fa54b42b2845e2a6afcce60/FLAGb5d341b72 [2021-11-02 22:14:51,043 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/data/b1175d5b2/edb880828fa54b42b2845e2a6afcce60 [2021-11-02 22:14:51,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:14:51,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:14:51,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:14:51,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:14:51,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:14:51,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:51,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669e994d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51, skipping insertion in model container [2021-11-02 22:14:51,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:51,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:14:51,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:14:51,515 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_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c[7477,7490] [2021-11-02 22:14:51,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:14:51,627 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:14:51,704 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_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c[7477,7490] [2021-11-02 22:14:51,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:14:51,833 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:14:51,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51 WrapperNode [2021-11-02 22:14:51,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:14:51,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:14:51,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:14:51,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:14:51,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:51,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:51,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:14:51,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:14:51,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:14:51,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:14:51,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:51,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:51,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:51,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:52,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:52,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:52,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:52,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:14:52,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:14:52,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:14:52,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:14:52,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51" (1/1) ... [2021-11-02 22:14:52,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:14:52,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:14:52,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:14:52,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-02 22:14:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:14:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:14:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:14:52,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:14:53,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:14:53,353 INFO L299 CfgBuilder]: Removed 122 assume(true) statements. [2021-11-02 22:14:53,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:14:53 BoogieIcfgContainer [2021-11-02 22:14:53,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:14:53,358 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-02 22:14:53,358 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-02 22:14:53,362 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-02 22:14:53,363 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:14:53,364 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 10:14:51" (1/3) ... [2021-11-02 22:14:53,366 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e475771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:14:53, skipping insertion in model container [2021-11-02 22:14:53,366 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:14:53,366 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:51" (2/3) ... [2021-11-02 22:14:53,367 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e475771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:14:53, skipping insertion in model container [2021-11-02 22:14:53,367 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:14:53,367 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:14:53" (3/3) ... [2021-11-02 22:14:53,369 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2021-11-02 22:14:53,426 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-02 22:14:53,426 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-02 22:14:53,426 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-02 22:14:53,427 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-02 22:14:53,427 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-02 22:14:53,427 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-02 22:14:53,427 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-02 22:14:53,427 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-02 22:14:53,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 90 states, 89 states have (on average 1.5168539325842696) internal successors, (135), 89 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:53,481 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-11-02 22:14:53,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:14:53,482 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:14:53,492 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:14:53,492 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:53,492 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-02 22:14:53,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 90 states, 89 states have (on average 1.5168539325842696) internal successors, (135), 89 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:53,505 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-11-02 22:14:53,506 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:14:53,506 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:14:53,507 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:14:53,507 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:53,512 INFO L791 eck$LassoCheckResult]: Stem: 68#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 55#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 23#L534true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 8#L542true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 76#L140true assume 0 != main_~tmp~0; 62#L113true havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 52#L928-1true [2021-11-02 22:14:53,514 INFO L793 eck$LassoCheckResult]: Loop: 52#L928-1true assume !false; 32#L166true assume test_~splverifierCounter~0 < 4; 25#L167true test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 4#L175true assume !(0 != test_~tmp~1); 71#L175-1true test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 41#L185true assume !(0 != test_~tmp___0~0); 63#L185-1true test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 54#L195true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 91#L203-2true assume !(0 != ~pumpRunning~0); 46#L237true assume !(0 != ~systemActive~0); 12#L244true havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 47#L452-1true __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 70#L922true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 52#L928-1true [2021-11-02 22:14:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-11-02 22:14:53,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:53,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27693085] [2021-11-02 22:14:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:53,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:53,926 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:14:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:54,189 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:14:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1680236938, now seen corresponding path program 1 times [2021-11-02 22:14:54,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:54,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313607327] [2021-11-02 22:14:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:54,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:14:54,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:54,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313607327] [2021-11-02 22:14:54,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313607327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:54,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:54,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:54,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518221655] [2021-11-02 22:14:54,327 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-02 22:14:54,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:54,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:54,353 INFO L87 Difference]: Start difference. First operand has 90 states, 89 states have (on average 1.5168539325842696) internal successors, (135), 89 states have internal predecessors, (135), 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) [2021-11-02 22:14:54,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:54,400 INFO L93 Difference]: Finished difference Result 90 states and 125 transitions. [2021-11-02 22:14:54,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:54,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 125 transitions. [2021-11-02 22:14:54,415 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2021-11-02 22:14:54,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 83 states and 117 transitions. [2021-11-02 22:14:54,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 83 [2021-11-02 22:14:54,425 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 83 [2021-11-02 22:14:54,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 117 transitions. [2021-11-02 22:14:54,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:14:54,427 INFO L681 BuchiCegarLoop]: Abstraction has 83 states and 117 transitions. [2021-11-02 22:14:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 117 transitions. [2021-11-02 22:14:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-11-02 22:14:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 82 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2021-11-02 22:14:54,472 INFO L704 BuchiCegarLoop]: Abstraction has 83 states and 117 transitions. [2021-11-02 22:14:54,472 INFO L587 BuchiCegarLoop]: Abstraction has 83 states and 117 transitions. [2021-11-02 22:14:54,473 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-02 22:14:54,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 117 transitions. [2021-11-02 22:14:54,477 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2021-11-02 22:14:54,477 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:14:54,477 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:14:54,478 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:14:54,479 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:54,479 INFO L791 eck$LassoCheckResult]: Stem: 267#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 260#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 229#L534 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 206#L542 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 207#L140 assume 0 != main_~tmp~0; 263#L113 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 216#L928-1 [2021-11-02 22:14:54,480 INFO L793 eck$LassoCheckResult]: Loop: 216#L928-1 assume !false; 236#L166 assume test_~splverifierCounter~0 < 4; 232#L167 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 191#L175 assume !(0 != test_~tmp~1); 193#L175-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 248#L185 assume !(0 != test_~tmp___0~0); 249#L185-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 259#L195 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 239#L203-2 assume !(0 != ~pumpRunning~0); 253#L237 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 254#L269 assume !(0 == ~pumpRunning~0); 208#L244 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 209#L452-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 255#L922 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 216#L928-1 [2021-11-02 22:14:54,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:54,481 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-11-02 22:14:54,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:54,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624963273] [2021-11-02 22:14:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:54,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:54,552 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:14:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:54,636 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:14:54,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:54,638 INFO L85 PathProgramCache]: Analyzing trace with hash -589506386, now seen corresponding path program 1 times [2021-11-02 22:14:54,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:54,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474774338] [2021-11-02 22:14:54,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:54,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:54,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:14:54,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:54,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474774338] [2021-11-02 22:14:54,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474774338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:54,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:54,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:54,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850224470] [2021-11-02 22:14:54,676 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-02 22:14:54,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:54,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:54,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:54,678 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:54,804 INFO L93 Difference]: Finished difference Result 130 states and 177 transitions. [2021-11-02 22:14:54,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:54,807 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 177 transitions. [2021-11-02 22:14:54,814 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 90 [2021-11-02 22:14:54,821 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 130 states and 177 transitions. [2021-11-02 22:14:54,823 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 130 [2021-11-02 22:14:54,824 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 130 [2021-11-02 22:14:54,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 130 states and 177 transitions. [2021-11-02 22:14:54,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:14:54,831 INFO L681 BuchiCegarLoop]: Abstraction has 130 states and 177 transitions. [2021-11-02 22:14:54,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states and 177 transitions. [2021-11-02 22:14:54,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-02 22:14:54,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 130 states have (on average 1.3615384615384616) internal successors, (177), 129 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 177 transitions. [2021-11-02 22:14:54,856 INFO L704 BuchiCegarLoop]: Abstraction has 130 states and 177 transitions. [2021-11-02 22:14:54,856 INFO L587 BuchiCegarLoop]: Abstraction has 130 states and 177 transitions. [2021-11-02 22:14:54,857 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-02 22:14:54,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 130 states and 177 transitions. [2021-11-02 22:14:54,859 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 90 [2021-11-02 22:14:54,862 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:14:54,863 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:14:54,864 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:14:54,864 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] [2021-11-02 22:14:54,865 INFO L791 eck$LassoCheckResult]: Stem: 492#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 482#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 448#L534 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 417#L542 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 418#L140 assume 0 != main_~tmp~0; 486#L113 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 487#L928-1 [2021-11-02 22:14:54,865 INFO L793 eck$LassoCheckResult]: Loop: 487#L928-1 assume !false; 457#L166 assume test_~splverifierCounter~0 < 4; 451#L167 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 408#L175 assume !(0 != test_~tmp~1); 410#L175-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 469#L185 assume !(0 != test_~tmp___0~0); 470#L185-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 488#L195 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 502#L203-2 assume !(0 != ~pumpRunning~0); 503#L237 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 500#L269 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret31, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 490#L492 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 491#L497 isHighWaterLevel_#t~ret31 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret31;havoc isHighWaterLevel_#t~ret31; 439#L389 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 440#L389-2 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 435#L395 processEnvironment_#t~ret12 := isHighWaterLevel_#res;processEnvironment_~tmp~2 := processEnvironment_#t~ret12;havoc processEnvironment_#t~ret12; 436#L273 assume !(0 != processEnvironment_~tmp~2); 499#L244 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 536#L452-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 534#L922 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 487#L928-1 [2021-11-02 22:14:54,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-11-02 22:14:54,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:54,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88447367] [2021-11-02 22:14:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:54,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:54,926 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:14:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:55,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:14:55,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:55,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1033634406, now seen corresponding path program 1 times [2021-11-02 22:14:55,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:55,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704969283] [2021-11-02 22:14:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:55,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:55,041 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:14:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:55,051 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:14:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1018922432, now seen corresponding path program 1 times [2021-11-02 22:14:55,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:55,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61312685] [2021-11-02 22:14:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:55,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:14:55,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:55,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61312685] [2021-11-02 22:14:55,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61312685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:55,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:55,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:55,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859188422] [2021-11-02 22:14:55,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:55,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:14:55,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:14:55,523 INFO L87 Difference]: Start difference. First operand 130 states and 177 transitions. cyclomatic complexity: 49 Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:55,695 INFO L93 Difference]: Finished difference Result 434 states and 594 transitions. [2021-11-02 22:14:55,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:14:55,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 434 states and 594 transitions. [2021-11-02 22:14:55,703 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 314 [2021-11-02 22:14:55,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 434 states to 434 states and 594 transitions. [2021-11-02 22:14:55,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 434 [2021-11-02 22:14:55,711 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 434 [2021-11-02 22:14:55,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 434 states and 594 transitions. [2021-11-02 22:14:55,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:14:55,715 INFO L681 BuchiCegarLoop]: Abstraction has 434 states and 594 transitions. [2021-11-02 22:14:55,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states and 594 transitions. [2021-11-02 22:14:55,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 254. [2021-11-02 22:14:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 254 states have (on average 1.3385826771653544) internal successors, (340), 253 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 340 transitions. [2021-11-02 22:14:55,740 INFO L704 BuchiCegarLoop]: Abstraction has 254 states and 340 transitions. [2021-11-02 22:14:55,740 INFO L587 BuchiCegarLoop]: Abstraction has 254 states and 340 transitions. [2021-11-02 22:14:55,740 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-02 22:14:55,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 254 states and 340 transitions. [2021-11-02 22:14:55,743 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 180 [2021-11-02 22:14:55,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:14:55,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:14:55,745 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:14:55,745 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] [2021-11-02 22:14:55,745 INFO L791 eck$LassoCheckResult]: Stem: 1086#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 1069#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1029#L534 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 999#L542 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1000#L140 assume 0 != main_~tmp~0; 1079#L113 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1080#L928-1 [2021-11-02 22:14:55,745 INFO L793 eck$LassoCheckResult]: Loop: 1080#L928-1 assume !false; 1209#L166 assume test_~splverifierCounter~0 < 4; 1210#L167 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 990#L175 assume !(0 != test_~tmp~1); 992#L175-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 1052#L185 assume !(0 != test_~tmp___0~0); 1053#L185-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 1068#L195 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1042#L203-2 assume !(0 != ~pumpRunning~0); 1108#L237 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1104#L269 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret31, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1082#L492 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1083#L497 isHighWaterLevel_#t~ret31 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret31;havoc isHighWaterLevel_#t~ret31; 1092#L389 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1217#L389-2 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 1215#L395 processEnvironment_#t~ret12 := isHighWaterLevel_#res;processEnvironment_~tmp~2 := processEnvironment_#t~ret12;havoc processEnvironment_#t~ret12; 1213#L273 assume !(0 != processEnvironment_~tmp~2); 1102#L244 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 1059#L452-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 1060#L922 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1094#L484 __utac_acc__Specification3_spec__1_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret79;havoc __utac_acc__Specification3_spec__1_#t~ret79; 1095#L928 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 1080#L928-1 [2021-11-02 22:14:55,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-11-02 22:14:55,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:55,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422956095] [2021-11-02 22:14:55,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:55,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:55,792 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:14:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:55,843 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:14:55,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1185212340, now seen corresponding path program 1 times [2021-11-02 22:14:55,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:55,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733390397] [2021-11-02 22:14:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:55,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:55,854 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:14:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:55,866 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:14:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:55,868 INFO L85 PathProgramCache]: Analyzing trace with hash 68092786, now seen corresponding path program 1 times [2021-11-02 22:14:55,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:55,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939583620] [2021-11-02 22:14:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:55,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:55,946 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:14:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:14:56,048 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:16:12,990 WARN L207 SmtUtils]: Spent 1.27 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-11-02 22:17:36,982 WARN L207 SmtUtils]: Spent 41.81 s on a formula simplification that was a NOOP. DAG size: 433 [2021-11-02 22:17:37,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 10:17:37 BoogieIcfgContainer [2021-11-02 22:17:37,200 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-02 22:17:37,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:17:37,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:17:37,201 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:17:37,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:14:53" (3/4) ... [2021-11-02 22:17:37,205 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-02 22:17:37,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:17:37,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:17:37,276 INFO L168 Benchmark]: Toolchain (without parser) took 166225.79 ms. Allocated memory was 109.1 MB in the beginning and 186.6 MB in the end (delta: 77.6 MB). Free memory was 77.4 MB in the beginning and 82.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 73.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:17:37,277 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 109.1 MB. Free memory is still 63.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:17:37,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.95 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 77.4 MB in the beginning and 115.1 MB in the end (delta: -37.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:17:37,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.36 ms. Allocated memory is still 146.8 MB. Free memory was 114.3 MB in the beginning and 111.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:17:37,279 INFO L168 Benchmark]: Boogie Preprocessor took 86.77 ms. Allocated memory is still 146.8 MB. Free memory was 111.7 MB in the beginning and 109.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:17:37,280 INFO L168 Benchmark]: RCFGBuilder took 1307.38 ms. Allocated memory is still 146.8 MB. Free memory was 108.8 MB in the beginning and 69.8 MB in the end (delta: 39.0 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-11-02 22:17:37,281 INFO L168 Benchmark]: BuchiAutomizer took 163842.38 ms. Allocated memory was 146.8 MB in the beginning and 186.6 MB in the end (delta: 39.8 MB). Free memory was 69.8 MB in the beginning and 84.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 70.8 MB. Max. memory is 16.1 GB. [2021-11-02 22:17:37,282 INFO L168 Benchmark]: Witness Printer took 74.14 ms. Allocated memory is still 186.6 MB. Free memory was 84.8 MB in the beginning and 82.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:17:37,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 109.1 MB. Free memory is still 63.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 769.95 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 77.4 MB in the beginning and 115.1 MB in the end (delta: -37.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 124.36 ms. Allocated memory is still 146.8 MB. Free memory was 114.3 MB in the beginning and 111.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.77 ms. Allocated memory is still 146.8 MB. Free memory was 111.7 MB in the beginning and 109.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1307.38 ms. Allocated memory is still 146.8 MB. Free memory was 108.8 MB in the beginning and 69.8 MB in the end (delta: 39.0 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 163842.38 ms. Allocated memory was 146.8 MB in the beginning and 186.6 MB in the end (delta: 39.8 MB). Free memory was 69.8 MB in the beginning and 84.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 70.8 MB. Max. memory is 16.1 GB. * Witness Printer took 74.14 ms. Allocated memory is still 186.6 MB. Free memory was 84.8 MB in the beginning and 82.7 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 254 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 163.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 163.0s. 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 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 180 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 254 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 395 SDtfs, 649 SDslu, 534 SDs, 0 SdLazy, 103 SolverSat, 35 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: 165]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=2239} State at position 1 is {NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23ed0010=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4260d529=0, NULL=2239, NULL=29689, NULL=0, NULL=2241, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2848a28c=0, retValue_acc=0, NULL=29684, tmp___1=0, NULL=0, NULL=29702, NULL=29681, cleanupTimeShifts=4, tmp=0, tmp=0, waterLevel=1, NULL=0, tmp___0=0, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, NULL=29692, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10b0c7=0, \result=1, NULL=29704, NULL=0, NULL=0, tmp=1, NULL=29693, NULL=0, NULL=0, NULL=0, NULL=29687, NULL=29683, retValue_acc=1, NULL=29695, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d349ae2=0, head=0, NULL=0, NULL=0, NULL=29686, NULL=0, NULL=0, NULL=29703, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@619adb04=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4aea9f7b=0, NULL=0, NULL=2242, NULL=29697, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@383418b9=74, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4448ac02=0, NULL=29700, tmp___0=0, NULL=0, NULL=29688, NULL=0, NULL=0, NULL=29701, tmp___0=1, NULL=0, systemActive=1, \result=1, \result=0, retValue_acc=0, NULL=2240, NULL=29699, \result=0, NULL=29698, NULL=0, NULL=0, NULL=29696, NULL=29682, retValue_acc=1, NULL=29691, tmp___2=74, splverifierCounter=0, NULL=0, \result=0, NULL=29685, NULL=29690, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5df028de=0, NULL=0, NULL=0, NULL=29694, NULL=0, NULL=29705} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L409] int waterLevel = 1; [L410] int methaneLevelCritical = 0; [L716] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L131] int retValue_acc ; [L132] int tmp ; [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] splverifierCounter = 0 Loop: [L165] COND TRUE 1 [L167] COND TRUE splverifierCounter < 4 [L173] tmp = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp)) [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) [L403] systemActive = 1 [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L381] int retValue_acc ; [L382] int tmp ; [L383] int tmp___0 ; [L489] int retValue_acc ; [L492] COND TRUE waterLevel < 2 [L493] retValue_acc = 1 [L494] return (retValue_acc); [L387] tmp = isHighWaterSensorDry() [L389] COND TRUE \read(tmp) [L390] tmp___0 = 0 [L394] retValue_acc = tmp___0 [L395] return (retValue_acc); [L271] tmp = isHighWaterLevel() [L273] COND FALSE !(\read(tmp)) [L914] int tmp ; [L915] int tmp___0 ; [L916] int tmp___1 ; [L448] int retValue_acc ; [L451] retValue_acc = methaneLevelCritical [L452] return (retValue_acc); [L920] tmp = isMethaneLevelCritical() [L922] COND FALSE !(\read(tmp)) [L480] int retValue_acc ; [L483] retValue_acc = waterLevel [L484] return (retValue_acc); [L926] tmp___0 = getWaterLevel() [L928] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-02 22:17:37,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd62ff7-bd0a-4efa-8c26-6b6c4bbd6357/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)