./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD --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 4d13ffd2557e7d7902d8a5eac414f9fb7393252d85c14855e86000741be6847f .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:06:21,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:06:21,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:06:21,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:06:21,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:06:21,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:06:21,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:06:21,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:06:21,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:06:21,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:06:21,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:06:21,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:06:21,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:06:21,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:06:21,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:06:21,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:06:21,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:06:21,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:06:21,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:06:21,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:06:21,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:06:21,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:06:21,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:06:21,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:06:21,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:06:21,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:06:21,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:06:21,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:06:21,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:06:21,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:06:21,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:06:21,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:06:21,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:06:21,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:06:21,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:06:21,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:06:21,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:06:21,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:06:21,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:06:21,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:06:21,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:06:21,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:06:21,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:06:21,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:06:21,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:06:21,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:06:21,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:06:21,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:06:21,805 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:06:21,805 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:06:21,806 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:06:21,806 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:06:21,806 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:06:21,806 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:06:21,807 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:06:21,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:06:21,807 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:06:21,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:06:21,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:06:21,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:06:21,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:06:21,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:06:21,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:06:21,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:06:21,809 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:06:21,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:06:21,810 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:06:21,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:06:21,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:06:21,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:06:21,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:06:21,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:06:21,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:06:21,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:06:21,813 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:06:21,813 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_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d13ffd2557e7d7902d8a5eac414f9fb7393252d85c14855e86000741be6847f [2021-10-28 23:06:22,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:06:22,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:06:22,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:06:22,142 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:06:22,143 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:06:22,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2021-10-28 23:06:22,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/data/817d500ee/d3de4b76f5174682b6b0167fcc901cf7/FLAGfc5d57380 [2021-10-28 23:06:22,953 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:06:22,953 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2021-10-28 23:06:22,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/data/817d500ee/d3de4b76f5174682b6b0167fcc901cf7/FLAGfc5d57380 [2021-10-28 23:06:23,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/data/817d500ee/d3de4b76f5174682b6b0167fcc901cf7 [2021-10-28 23:06:23,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:06:23,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:06:23,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:06:23,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:06:23,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:06:23,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:23,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315ee5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23, skipping insertion in model container [2021-10-28 23:06:23,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:23,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:06:23,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:06:23,578 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_ff8c3abe-b456-439b-be18-8a75e562dcdb/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c[1605,1618] [2021-10-28 23:06:23,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:06:23,743 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:06:23,760 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_ff8c3abe-b456-439b-be18-8a75e562dcdb/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c[1605,1618] [2021-10-28 23:06:23,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:06:23,946 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:06:23,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23 WrapperNode [2021-10-28 23:06:23,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:06:23,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:06:23,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:06:23,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:06:23,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:23,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:24,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:06:24,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:06:24,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:06:24,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:06:24,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:24,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:24,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:24,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:24,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:24,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:24,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:24,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:06:24,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:06:24,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:06:24,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:06:24,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23" (1/1) ... [2021-10-28 23:06:24,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:06:24,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:06:24,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:06:24,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:06:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:06:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:06:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:06:24,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:06:25,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:06:25,888 INFO L299 CfgBuilder]: Removed 356 assume(true) statements. [2021-10-28 23:06:25,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:06:25 BoogieIcfgContainer [2021-10-28 23:06:25,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:06:25,896 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:06:25,896 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:06:25,900 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:06:25,901 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:06:25,901 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:06:23" (1/3) ... [2021-10-28 23:06:25,903 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a4e03be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:06:25, skipping insertion in model container [2021-10-28 23:06:25,903 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:06:25,903 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:06:23" (2/3) ... [2021-10-28 23:06:25,904 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a4e03be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:06:25, skipping insertion in model container [2021-10-28 23:06:25,905 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:06:25,905 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:06:25" (3/3) ... [2021-10-28 23:06:25,906 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product62.cil.c [2021-10-28 23:06:25,954 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:06:25,954 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:06:25,955 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:06:25,955 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:06:25,955 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:06:25,955 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:06:25,955 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:06:25,956 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:06:25,982 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 228 states, 227 states have (on average 1.5066079295154184) internal successors, (342), 227 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:06:26,023 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-10-28 23:06:26,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:06:26,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:06:26,032 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:06:26,033 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:26,033 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:06:26,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 228 states, 227 states have (on average 1.5066079295154184) internal successors, (342), 227 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:06:26,055 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-10-28 23:06:26,055 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:06:26,055 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:06:26,057 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:06:26,057 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:26,063 INFO L791 eck$LassoCheckResult]: Stem: 220#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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 141#L-1true havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 145#L596true 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; 147#L604true main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 229#L1012true assume 0 != main_~tmp~11; 136#L989true havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 68#L77-1true [2021-10-28 23:06:26,063 INFO L793 eck$LassoCheckResult]: Loop: 68#L77-1true assume !false; 181#L874true assume test_~splverifierCounter~0 < 4; 9#L875true test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 138#L883true assume !(0 != test_~tmp~10); 24#L883-1true test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 61#L893true assume !(0 != test_~tmp___0~3); 161#L893-1true test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 204#L903true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 10#L911-2true assume !(0 != ~pumpRunning~0); 42#L621true assume !(0 != ~systemActive~0); 151#L628true havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 13#L511-5true __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 51#L71true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 68#L77-1true [2021-10-28 23:06:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 23:06:26,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:26,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566547964] [2021-10-28 23:06:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:26,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:26,335 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:06:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:26,505 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:06:26,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1674172490, now seen corresponding path program 1 times [2021-10-28 23:06:26,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:26,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705452996] [2021-10-28 23:06:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:26,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:26,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:26,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:06:26,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705452996] [2021-10-28 23:06:26,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705452996] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:06:26,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:06:26,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:06:26,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65468945] [2021-10-28 23:06:26,657 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:06:26,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:06:26,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:06:26,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:06:26,682 INFO L87 Difference]: Start difference. First operand has 228 states, 227 states have (on average 1.5066079295154184) internal successors, (342), 227 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:06:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:06:26,778 INFO L93 Difference]: Finished difference Result 228 states and 332 transitions. [2021-10-28 23:06:26,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:06:26,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 332 transitions. [2021-10-28 23:06:26,794 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-10-28 23:06:26,803 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 221 states and 324 transitions. [2021-10-28 23:06:26,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2021-10-28 23:06:26,807 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 221 [2021-10-28 23:06:26,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 324 transitions. [2021-10-28 23:06:26,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:06:26,810 INFO L681 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2021-10-28 23:06:26,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states and 324 transitions. [2021-10-28 23:06:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2021-10-28 23:06:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 221 states have (on average 1.4660633484162895) internal successors, (324), 220 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:06:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 324 transitions. [2021-10-28 23:06:26,862 INFO L704 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2021-10-28 23:06:26,862 INFO L587 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2021-10-28 23:06:26,863 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:06:26,863 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 221 states and 324 transitions. [2021-10-28 23:06:26,867 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-10-28 23:06:26,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:06:26,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:06:26,868 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:06:26,868 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:26,869 INFO L791 eck$LassoCheckResult]: Stem: 685#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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 657#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 658#L596 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; 662#L604 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 663#L1012 assume 0 != main_~tmp~11; 654#L989 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 552#L77-1 [2021-10-28 23:06:26,869 INFO L793 eck$LassoCheckResult]: Loop: 552#L77-1 assume !false; 580#L874 assume test_~splverifierCounter~0 < 4; 476#L875 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 477#L883 assume !(0 != test_~tmp~10); 509#L883-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 510#L893 assume !(0 != test_~tmp___0~3); 569#L893-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 672#L903 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 478#L911-2 assume !(0 != ~pumpRunning~0); 479#L621 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 541#L705 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 573#L679-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 567#L653-3 assume !(0 == ~pumpRunning~0); 526#L628 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 486#L511-5 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 487#L71 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 552#L77-1 [2021-10-28 23:06:26,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 23:06:26,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:26,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408304838] [2021-10-28 23:06:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:26,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:26,963 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:06:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:27,121 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:06:27,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1243674316, now seen corresponding path program 1 times [2021-10-28 23:06:27,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:27,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215130845] [2021-10-28 23:06:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:27,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:27,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:06:27,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215130845] [2021-10-28 23:06:27,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215130845] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:06:27,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:06:27,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:06:27,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822711394] [2021-10-28 23:06:27,171 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:06:27,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:06:27,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:06:27,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:06:27,173 INFO L87 Difference]: Start difference. First operand 221 states and 324 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:06:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:06:27,366 INFO L93 Difference]: Finished difference Result 223 states and 309 transitions. [2021-10-28 23:06:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:06:27,367 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 309 transitions. [2021-10-28 23:06:27,371 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2021-10-28 23:06:27,374 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 223 states and 309 transitions. [2021-10-28 23:06:27,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2021-10-28 23:06:27,376 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 223 [2021-10-28 23:06:27,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 309 transitions. [2021-10-28 23:06:27,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:06:27,382 INFO L681 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2021-10-28 23:06:27,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states and 309 transitions. [2021-10-28 23:06:27,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-10-28 23:06:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 223 states have (on average 1.3856502242152466) internal successors, (309), 222 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:06:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 309 transitions. [2021-10-28 23:06:27,410 INFO L704 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2021-10-28 23:06:27,410 INFO L587 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2021-10-28 23:06:27,411 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:06:27,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 223 states and 309 transitions. [2021-10-28 23:06:27,413 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2021-10-28 23:06:27,413 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:06:27,413 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:06:27,419 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:06:27,419 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:27,419 INFO L791 eck$LassoCheckResult]: Stem: 1096#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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1003#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 1004#L596 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; 1012#L604 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 1013#L1012 assume 0 != main_~tmp~11; 989#L989 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 990#L77-1 [2021-10-28 23:06:27,420 INFO L793 eck$LassoCheckResult]: Loop: 990#L77-1 assume !false; 1066#L874 assume test_~splverifierCounter~0 < 4; 939#L875 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 940#L883 assume !(0 != test_~tmp~10); 993#L883-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 994#L893 assume !(0 != test_~tmp___0~3); 1039#L893-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 1040#L903 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 941#L911-2 assume !(0 != ~pumpRunning~0); 942#L621 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1034#L705 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 1071#L679-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1063#L653-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 1064#L551-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 1014#L556-3 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 933#L824-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 934#L824-11 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 1070#L830-3 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 1029#L657-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 1026#L628 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 952#L511-5 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 953#L71 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 990#L77-1 [2021-10-28 23:06:27,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:27,426 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 23:06:27,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:27,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94178640] [2021-10-28 23:06:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:27,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:27,522 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:06:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:27,637 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:06:27,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1113090816, now seen corresponding path program 1 times [2021-10-28 23:06:27,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:27,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957026926] [2021-10-28 23:06:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:27,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:27,650 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:06:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:27,662 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:06:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:27,664 INFO L85 PathProgramCache]: Analyzing trace with hash 140214310, now seen corresponding path program 1 times [2021-10-28 23:06:27,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:27,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579985721] [2021-10-28 23:06:27,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:27,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:27,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:06:27,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579985721] [2021-10-28 23:06:27,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579985721] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:06:27,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:06:27,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:06:27,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482967382] [2021-10-28 23:06:28,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:06:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:06:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:06:28,177 INFO L87 Difference]: Start difference. First operand 223 states and 309 transitions. cyclomatic complexity: 88 Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:06:28,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:06:28,541 INFO L93 Difference]: Finished difference Result 747 states and 1037 transitions. [2021-10-28 23:06:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:06:28,542 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 747 states and 1037 transitions. [2021-10-28 23:06:28,551 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 532 [2021-10-28 23:06:28,560 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 747 states to 747 states and 1037 transitions. [2021-10-28 23:06:28,561 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 747 [2021-10-28 23:06:28,562 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 747 [2021-10-28 23:06:28,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 747 states and 1037 transitions. [2021-10-28 23:06:28,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:06:28,572 INFO L681 BuchiCegarLoop]: Abstraction has 747 states and 1037 transitions. [2021-10-28 23:06:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states and 1037 transitions. [2021-10-28 23:06:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 440. [2021-10-28 23:06:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 440 states have (on average 1.3727272727272728) internal successors, (604), 439 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:06:28,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 604 transitions. [2021-10-28 23:06:28,616 INFO L704 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2021-10-28 23:06:28,617 INFO L587 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2021-10-28 23:06:28,617 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:06:28,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 440 states and 604 transitions. [2021-10-28 23:06:28,621 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 304 [2021-10-28 23:06:28,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:06:28,622 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:06:28,624 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:06:28,625 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:28,625 INFO L791 eck$LassoCheckResult]: Stem: 2117#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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1993#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 1994#L596 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; 2002#L604 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 2003#L1012 assume 0 != main_~tmp~11; 1979#L989 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1980#L77-1 [2021-10-28 23:06:28,625 INFO L793 eck$LassoCheckResult]: Loop: 1980#L77-1 assume !false; 2071#L874 assume test_~splverifierCounter~0 < 4; 1928#L875 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 1929#L883 assume !(0 != test_~tmp~10); 1983#L883-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 1984#L893 assume !(0 != test_~tmp___0~3); 2032#L893-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 2033#L903 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2026#L911-2 assume !(0 != ~pumpRunning~0); 2191#L621 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 2190#L705 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 2184#L679-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 2189#L653-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 2188#L551-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 2187#L556-3 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 2186#L824-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 2075#L824-11 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 2076#L830-3 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 2156#L657-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 2058#L628 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 1941#L511-5 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 1942#L71 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 2013#L543 __utac_acc__Specification3_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 2014#L77 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1980#L77-1 [2021-10-28 23:06:28,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:28,626 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 23:06:28,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:28,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021145373] [2021-10-28 23:06:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:28,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:28,683 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:06:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:28,724 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:06:28,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:28,725 INFO L85 PathProgramCache]: Analyzing trace with hash -233404718, now seen corresponding path program 1 times [2021-10-28 23:06:28,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:28,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47306103] [2021-10-28 23:06:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:28,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:28,733 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:06:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:28,742 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:06:28,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:28,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1601978488, now seen corresponding path program 1 times [2021-10-28 23:06:28,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:28,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688198671] [2021-10-28 23:06:28,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:28,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:28,777 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:06:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:06:28,858 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:07:38,820 WARN L207 SmtUtils]: Spent 1.16 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 23:08:48,370 WARN L207 SmtUtils]: Spent 34.64 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 23:08:48,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:08:48 BoogieIcfgContainer [2021-10-28 23:08:48,500 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:08:48,501 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:08:48,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:08:48,501 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:08:48,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:06:25" (3/4) ... [2021-10-28 23:08:48,505 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:08:48,566 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:08:48,567 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:08:48,568 INFO L168 Benchmark]: Toolchain (without parser) took 145323.65 ms. Allocated memory was 100.7 MB in the beginning and 216.0 MB in the end (delta: 115.3 MB). Free memory was 66.7 MB in the beginning and 56.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 126.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,569 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory was 57.9 MB in the beginning and 57.9 MB in the end (delta: 53.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:48,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.40 ms. Allocated memory was 100.7 MB in the beginning and 153.1 MB in the end (delta: 52.4 MB). Free memory was 66.5 MB in the beginning and 118.1 MB in the end (delta: -51.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,570 INFO L168 Benchmark]: Boogie Procedure Inliner took 130.35 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 113.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,571 INFO L168 Benchmark]: Boogie Preprocessor took 149.90 ms. Allocated memory is still 153.1 MB. Free memory was 112.4 MB in the beginning and 108.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,572 INFO L168 Benchmark]: RCFGBuilder took 1649.00 ms. Allocated memory is still 153.1 MB. Free memory was 108.8 MB in the beginning and 100.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,573 INFO L168 Benchmark]: BuchiAutomizer took 142604.86 ms. Allocated memory was 153.1 MB in the beginning and 216.0 MB in the end (delta: 62.9 MB). Free memory was 100.5 MB in the beginning and 58.4 MB in the end (delta: 42.0 MB). Peak memory consumption was 111.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,573 INFO L168 Benchmark]: Witness Printer took 65.87 ms. Allocated memory is still 216.0 MB. Free memory was 58.4 MB in the beginning and 56.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:48,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory was 57.9 MB in the beginning and 57.9 MB in the end (delta: 53.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 686.40 ms. Allocated memory was 100.7 MB in the beginning and 153.1 MB in the end (delta: 52.4 MB). Free memory was 66.5 MB in the beginning and 118.1 MB in the end (delta: -51.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 130.35 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 113.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 149.90 ms. Allocated memory is still 153.1 MB. Free memory was 112.4 MB in the beginning and 108.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1649.00 ms. Allocated memory is still 153.1 MB. Free memory was 108.8 MB in the beginning and 100.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 142604.86 ms. Allocated memory was 153.1 MB in the beginning and 216.0 MB in the end (delta: 62.9 MB). Free memory was 100.5 MB in the beginning and 58.4 MB in the end (delta: 42.0 MB). Peak memory consumption was 111.8 MB. Max. memory is 16.1 GB. * Witness Printer took 65.87 ms. Allocated memory is still 216.0 MB. Free memory was 58.4 MB in the beginning and 56.3 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 440 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 142.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 141.5s. Construction of modules took 0.3s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 307 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 440 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 917 SDtfs, 1517 SDslu, 1203 SDs, 0 SdLazy, 204 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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: 873]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=1, NULL=51450, NULL=0, NULL=0, NULL=51455, methaneLevelCritical=0, NULL=0, NULL=51448, NULL=51456, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20563894=0, NULL=51465, NULL=0, NULL=51463, tmp=0, cleanupTimeShifts=4, NULL=51445, tmp=1, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c149d3d=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=51444, NULL=0, NULL=0, \result=1, NULL=0, retValue_acc=0, NULL=0, NULL=0, tmp___0=0, tmp=1, retValue_acc=1, NULL=51447, NULL=51459, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@551a41=0, head=0, NULL=0, tmp=0, NULL=51442, NULL=0, NULL=0, NULL=0, NULL=51452, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c65810a=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2982aae7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a1b53da=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68154a52=0, NULL=51449, NULL=51451, NULL=51446, tmp___0=0, NULL=51462, NULL=0, NULL=0, tmp___0=1, NULL=51464, tmp=0, NULL=51443, NULL=51458, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bfc56e3=0, NULL=0, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27fbc839=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31879001=72, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@52d11403=0, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=24802, retValue_acc=0, \result=0, NULL=51457, NULL=51461, NULL=51466, retValue_acc=1, NULL=24801, tmp=0, tmp___2=72, splverifierCounter=0, NULL=0, \result=0, NULL=51441, NULL=51453, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1dacb3e4=0, NULL=51454, NULL=51460, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L265] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L468] int waterLevel = 1; [L469] int methaneLevelCritical = 0; [L614] int pumpRunning = 0; [L615] int systemActive = 1; [L930] int cleanupTimeShifts = 4; [L1003] int retValue_acc ; [L1004] int tmp ; [L600] int retValue_acc ; [L603] retValue_acc = 1 [L604] return (retValue_acc); [L1010] tmp = valid_product() [L1012] COND TRUE \read(tmp) [L864] int splverifierCounter ; [L865] int tmp ; [L866] int tmp___0 ; [L867] int tmp___1 ; [L868] int tmp___2 ; [L871] splverifierCounter = 0 Loop: [L873] COND TRUE 1 [L875] COND TRUE splverifierCounter < 4 [L881] tmp = __VERIFIER_nondet_int() [L883] COND FALSE !(\read(tmp)) [L891] tmp___0 = __VERIFIER_nondet_int() [L893] COND FALSE !(\read(tmp___0)) [L901] tmp___2 = __VERIFIER_nondet_int() [L903] COND TRUE \read(tmp___2) [L857] systemActive = 1 [L621] COND FALSE !(\read(pumpRunning)) [L628] COND TRUE \read(systemActive) [L702] int tmp ; [L705] COND FALSE !(\read(pumpRunning)) [L676] int tmp ; [L679] COND FALSE !(\read(pumpRunning)) [L650] int tmp ; [L653] COND TRUE ! pumpRunning [L816] int retValue_acc ; [L817] int tmp ; [L818] int tmp___0 ; [L548] int retValue_acc ; [L551] COND TRUE waterLevel < 2 [L552] retValue_acc = 1 [L553] return (retValue_acc); [L822] tmp = isHighWaterSensorDry() [L824] COND TRUE \read(tmp) [L825] tmp___0 = 0 [L829] retValue_acc = tmp___0 [L830] return (retValue_acc); [L655] tmp = isHighWaterLevel() [L657] COND FALSE !(\read(tmp)) [L63] int tmp ; [L64] int tmp___0 ; [L65] int tmp___1 ; [L507] int retValue_acc ; [L510] retValue_acc = methaneLevelCritical [L511] return (retValue_acc); [L69] tmp = isMethaneLevelCritical() [L71] COND FALSE !(\read(tmp)) [L539] int retValue_acc ; [L542] retValue_acc = waterLevel [L543] return (retValue_acc); [L75] tmp___0 = getWaterLevel() [L77] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:08:48,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff8c3abe-b456-439b-be18-8a75e562dcdb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...