./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be --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 b18268074b12ff6db81668668ee2d33af663d931f7be534d8799200934e1992a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-e943c26 [2021-10-21 20:13:20,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:13:20,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:13:20,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:13:20,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:13:20,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:13:20,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:13:20,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:13:20,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:13:20,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:13:20,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:13:20,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:13:20,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:13:20,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:13:20,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:13:20,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:13:20,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:13:20,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:13:20,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:13:20,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:13:20,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:13:20,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:13:20,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:13:20,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:13:20,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:13:20,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:13:20,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:13:20,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:13:20,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:13:20,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:13:20,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:13:20,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:13:20,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:13:20,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:13:20,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:13:20,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:13:20,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:13:20,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:13:20,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:13:20,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:13:20,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:13:20,653 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 20:13:20,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:13:20,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:13:20,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:13:20,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:13:20,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:13:20,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:13:20,680 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:13:20,681 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:13:20,681 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:13:20,681 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:13:20,681 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:13:20,682 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:13:20,682 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:13:20,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:13:20,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:13:20,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:13:20,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:13:20,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:13:20,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:13:20,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:13:20,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:13:20,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:13:20,684 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:13:20,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:13:20,684 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:13:20,685 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:13:20,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:13:20,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:13:20,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:13:20,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:13:20,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:13:20,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:13:20,687 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:13:20,687 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_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b18268074b12ff6db81668668ee2d33af663d931f7be534d8799200934e1992a [2021-10-21 20:13:20,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:13:20,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:13:20,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:13:20,967 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:13:20,968 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:13:20,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c [2021-10-21 20:13:21,066 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/data/8f3bc031a/23251d89f2d24a258751c7fdd2fe4341/FLAG1f4ffc925 [2021-10-21 20:13:21,658 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:13:21,659 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c [2021-10-21 20:13:21,677 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/data/8f3bc031a/23251d89f2d24a258751c7fdd2fe4341/FLAG1f4ffc925 [2021-10-21 20:13:21,913 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/data/8f3bc031a/23251d89f2d24a258751c7fdd2fe4341 [2021-10-21 20:13:21,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:13:21,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:13:21,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:13:21,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:13:21,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:13:21,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:13:21" (1/1) ... [2021-10-21 20:13:21,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9179b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:21, skipping insertion in model container [2021-10-21 20:13:21,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:13:21" (1/1) ... [2021-10-21 20:13:21,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:13:22,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:13:22,264 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_e6844b4b-b36d-44f5-a733-d9bf08553eeb/sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c[2897,2910] [2021-10-21 20:13:22,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:13:22,373 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:13:22,390 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_e6844b4b-b36d-44f5-a733-d9bf08553eeb/sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c[2897,2910] [2021-10-21 20:13:22,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:13:22,473 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:13:22,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22 WrapperNode [2021-10-21 20:13:22,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:13:22,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:13:22,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:13:22,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:13:22,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22" (1/1) ... [2021-10-21 20:13:22,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22" (1/1) ... [2021-10-21 20:13:22,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:13:22,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:13:22,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:13:22,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:13:22,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22" (1/1) ... [2021-10-21 20:13:22,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22" (1/1) ... [2021-10-21 20:13:22,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22" (1/1) ... [2021-10-21 20:13:22,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22" (1/1) ... [2021-10-21 20:13:22,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22" (1/1) ... [2021-10-21 20:13:22,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22" (1/1) ... [2021-10-21 20:13:22,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22" (1/1) ... [2021-10-21 20:13:22,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:13:22,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:13:22,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:13:22,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:13:22,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22" (1/1) ... [2021-10-21 20:13:22,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:13:22,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:13:22,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:13:22,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:13:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:13:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:13:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:13:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:13:23,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:13:23,877 INFO L299 CfgBuilder]: Removed 366 assume(true) statements. [2021-10-21 20:13:23,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:13:23 BoogieIcfgContainer [2021-10-21 20:13:23,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:13:23,882 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:13:23,882 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:13:23,885 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:13:23,886 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:13:23,887 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:13:21" (1/3) ... [2021-10-21 20:13:23,888 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23a4de63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:13:23, skipping insertion in model container [2021-10-21 20:13:23,888 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:13:23,888 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:22" (2/3) ... [2021-10-21 20:13:23,889 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23a4de63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:13:23, skipping insertion in model container [2021-10-21 20:13:23,889 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:13:23,889 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:13:23" (3/3) ... [2021-10-21 20:13:23,891 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product63.cil.c [2021-10-21 20:13:23,937 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:13:23,938 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:13:23,938 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:13:23,938 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:13:23,938 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:13:23,938 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:13:23,939 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:13:23,939 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:13:23,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 233 states, 232 states have (on average 1.5) internal successors, (348), 232 states have internal predecessors, (348), 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) [2021-10-21 20:13:23,998 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2021-10-21 20:13:23,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:13:23,999 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:13:24,008 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:24,008 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:24,008 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:13:24,010 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 233 states, 232 states have (on average 1.5) internal successors, (348), 232 states have internal predecessors, (348), 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) [2021-10-21 20:13:24,024 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2021-10-21 20:13:24,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:13:24,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:13:24,026 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:24,030 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:24,035 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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 149#L-1true havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 223#L127true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 80#L135true main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 170#L305true assume 0 != main_~tmp~2; 124#L281true ~switchedOnBeforeTS~0 := 0; 78#L59true havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 218#L80-1true [2021-10-21 20:13:24,042 INFO L793 eck$LassoCheckResult]: Loop: 218#L80-1true assume !false; 119#L165true assume test_~splverifierCounter~0 < 4; 71#L166true test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 228#L174true assume !(0 != test_~tmp~1); 74#L174-1true test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 68#L184true assume !(0 != test_~tmp___0~1); 93#L184-1true test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 199#L194true assume 0 != test_~tmp___2~0; 15#L200-1true havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 129#L490true __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 11#L69true assume !(0 != ~pumpRunning~0); 62#L336true assume !(0 != ~systemActive~0); 195#L343true havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 138#L659true __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 116#L80true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 218#L80-1true [2021-10-21 20:13:24,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:24,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-21 20:13:24,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:24,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646119697] [2021-10-21 20:13:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:24,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:24,341 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:13:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:24,493 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:13:24,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:24,496 INFO L82 PathProgramCache]: Analyzing trace with hash -235396459, now seen corresponding path program 1 times [2021-10-21 20:13:24,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:24,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608537901] [2021-10-21 20:13:24,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:24,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:24,505 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:13:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:24,516 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:13:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:24,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1698628751, now seen corresponding path program 1 times [2021-10-21 20:13:24,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:24,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811328967] [2021-10-21 20:13:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:24,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:13:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:13:24,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:13:24,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811328967] [2021-10-21 20:13:24,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811328967] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:13:24,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:13:24,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:13:24,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94503731] [2021-10-21 20:13:24,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:13:24,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:13:24,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:13:24,956 INFO L87 Difference]: Start difference. First operand has 233 states, 232 states have (on average 1.5) internal successors, (348), 232 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-21 20:13:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:13:25,228 INFO L93 Difference]: Finished difference Result 517 states and 748 transitions. [2021-10-21 20:13:25,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:13:25,231 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 517 states and 748 transitions. [2021-10-21 20:13:25,244 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 339 [2021-10-21 20:13:25,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 517 states to 496 states and 727 transitions. [2021-10-21 20:13:25,275 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 496 [2021-10-21 20:13:25,280 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 496 [2021-10-21 20:13:25,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 727 transitions. [2021-10-21 20:13:25,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:13:25,284 INFO L681 BuchiCegarLoop]: Abstraction has 496 states and 727 transitions. [2021-10-21 20:13:25,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 727 transitions. [2021-10-21 20:13:25,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 275. [2021-10-21 20:13:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 275 states have (on average 1.4581818181818182) internal successors, (401), 274 states have internal predecessors, (401), 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) [2021-10-21 20:13:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 401 transitions. [2021-10-21 20:13:25,332 INFO L704 BuchiCegarLoop]: Abstraction has 275 states and 401 transitions. [2021-10-21 20:13:25,332 INFO L587 BuchiCegarLoop]: Abstraction has 275 states and 401 transitions. [2021-10-21 20:13:25,332 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:13:25,332 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 275 states and 401 transitions. [2021-10-21 20:13:25,337 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 188 [2021-10-21 20:13:25,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:13:25,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:13:25,338 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:25,338 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:25,338 INFO L791 eck$LassoCheckResult]: Stem: 992#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 961#L-1 havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 962#L127 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 896#L135 main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 897#L305 assume 0 != main_~tmp~2; 942#L281 ~switchedOnBeforeTS~0 := 0; 893#L59 havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 819#L80-1 [2021-10-21 20:13:25,339 INFO L793 eck$LassoCheckResult]: Loop: 819#L80-1 assume !false; 935#L165 assume test_~splverifierCounter~0 < 4; 884#L166 test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 885#L174 assume !(0 != test_~tmp~1); 779#L174-1 test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 879#L184 assume !(0 != test_~tmp___0~1); 881#L184-1 test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 909#L194 assume 0 != test_~tmp___2~0; 792#L200-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 793#L490 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 782#L69 assume !(0 != ~pumpRunning~0); 784#L336 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 869#L420 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret17, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 959#L394-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret16, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 886#L368-3 assume !(0 == ~pumpRunning~0); 811#L343 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 955#L659 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 932#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 819#L80-1 [2021-10-21 20:13:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:25,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-21 20:13:25,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:25,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162679298] [2021-10-21 20:13:25,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:25,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:25,394 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:13:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:25,459 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:13:25,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:25,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1853866313, now seen corresponding path program 1 times [2021-10-21 20:13:25,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:25,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167259540] [2021-10-21 20:13:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:25,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:13:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:13:25,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:13:25,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167259540] [2021-10-21 20:13:25,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167259540] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:13:25,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:13:25,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:13:25,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735450519] [2021-10-21 20:13:25,480 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:13:25,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:13:25,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:13:25,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:13:25,481 INFO L87 Difference]: Start difference. First operand 275 states and 401 transitions. cyclomatic complexity: 129 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-21 20:13:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:13:25,651 INFO L93 Difference]: Finished difference Result 277 states and 380 transitions. [2021-10-21 20:13:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:13:25,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 277 states and 380 transitions. [2021-10-21 20:13:25,656 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 194 [2021-10-21 20:13:25,659 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 277 states to 277 states and 380 transitions. [2021-10-21 20:13:25,659 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 277 [2021-10-21 20:13:25,660 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 277 [2021-10-21 20:13:25,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 277 states and 380 transitions. [2021-10-21 20:13:25,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:13:25,661 INFO L681 BuchiCegarLoop]: Abstraction has 277 states and 380 transitions. [2021-10-21 20:13:25,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states and 380 transitions. [2021-10-21 20:13:25,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-10-21 20:13:25,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 277 states have (on average 1.371841155234657) internal successors, (380), 276 states have internal predecessors, (380), 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) [2021-10-21 20:13:25,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 380 transitions. [2021-10-21 20:13:25,692 INFO L704 BuchiCegarLoop]: Abstraction has 277 states and 380 transitions. [2021-10-21 20:13:25,692 INFO L587 BuchiCegarLoop]: Abstraction has 277 states and 380 transitions. [2021-10-21 20:13:25,692 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:13:25,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 380 transitions. [2021-10-21 20:13:25,695 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 194 [2021-10-21 20:13:25,695 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:13:25,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:13:25,696 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:25,696 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] [2021-10-21 20:13:25,696 INFO L791 eck$LassoCheckResult]: Stem: 1521#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 1419#L-1 havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 1420#L127 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1512#L135 main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 1467#L305 assume 0 != main_~tmp~2; 1362#L281 ~switchedOnBeforeTS~0 := 0; 1363#L59 havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1342#L80-1 [2021-10-21 20:13:25,697 INFO L793 eck$LassoCheckResult]: Loop: 1342#L80-1 assume !false; 1348#L165 assume test_~splverifierCounter~0 < 4; 1349#L166 test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 1500#L174 assume !(0 != test_~tmp~1); 1347#L174-1 test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 1492#L184 assume !(0 != test_~tmp___0~1); 1418#L184-1 test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 1503#L194 assume 0 != test_~tmp___2~0; 1387#L200-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1377#L490 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 1369#L69 assume !(0 != ~pumpRunning~0); 1370#L336 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1411#L420 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret17, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1412#L394-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret16, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 1441#L368-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 1423#L667-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 1424#L672-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 1413#L539-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 1414#L539-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1449#L545-3 processEnvironment__wrappee__highWaterSensor_#t~ret16 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret16;havoc processEnvironment__wrappee__highWaterSensor_#t~ret16; 1407#L372-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 1356#L343 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 1399#L659 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 1340#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 1342#L80-1 [2021-10-21 20:13:25,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:25,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-21 20:13:25,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:25,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103472004] [2021-10-21 20:13:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:25,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:25,774 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:13:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:25,847 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:13:25,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:25,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2069526741, now seen corresponding path program 1 times [2021-10-21 20:13:25,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:25,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911115235] [2021-10-21 20:13:25,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:25,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:13:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:13:25,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:13:25,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911115235] [2021-10-21 20:13:25,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911115235] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:13:25,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:13:25,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:13:25,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916134529] [2021-10-21 20:13:25,921 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:13:25,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:13:25,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:13:25,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:13:25,922 INFO L87 Difference]: Start difference. First operand 277 states and 380 transitions. cyclomatic complexity: 106 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-10-21 20:13:26,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:13:26,308 INFO L93 Difference]: Finished difference Result 1231 states and 1699 transitions. [2021-10-21 20:13:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:13:26,308 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1231 states and 1699 transitions. [2021-10-21 20:13:26,324 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 851 [2021-10-21 20:13:26,339 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1231 states to 1231 states and 1699 transitions. [2021-10-21 20:13:26,340 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1231 [2021-10-21 20:13:26,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1231 [2021-10-21 20:13:26,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1231 states and 1699 transitions. [2021-10-21 20:13:26,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:13:26,347 INFO L681 BuchiCegarLoop]: Abstraction has 1231 states and 1699 transitions. [2021-10-21 20:13:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states and 1699 transitions. [2021-10-21 20:13:26,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 544. [2021-10-21 20:13:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 544 states have (on average 1.3566176470588236) internal successors, (738), 543 states have internal predecessors, (738), 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) [2021-10-21 20:13:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 738 transitions. [2021-10-21 20:13:26,400 INFO L704 BuchiCegarLoop]: Abstraction has 544 states and 738 transitions. [2021-10-21 20:13:26,401 INFO L587 BuchiCegarLoop]: Abstraction has 544 states and 738 transitions. [2021-10-21 20:13:26,401 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:13:26,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 544 states and 738 transitions. [2021-10-21 20:13:26,405 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 386 [2021-10-21 20:13:26,405 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:13:26,405 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:13:26,407 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:26,407 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, 1, 1] [2021-10-21 20:13:26,407 INFO L791 eck$LassoCheckResult]: Stem: 3076#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 2951#L-1 havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 2952#L127 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 3061#L135 main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 3008#L305 assume 0 != main_~tmp~2; 2892#L281 ~switchedOnBeforeTS~0 := 0; 2893#L59 havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2942#L80-1 [2021-10-21 20:13:26,407 INFO L793 eck$LassoCheckResult]: Loop: 2942#L80-1 assume !false; 3294#L165 assume test_~splverifierCounter~0 < 4; 3295#L166 test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 3366#L174 assume !(0 != test_~tmp~1); 3363#L174-1 test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 3361#L184 assume !(0 != test_~tmp___0~1); 3357#L184-1 test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 3358#L194 assume 0 != test_~tmp___2~0; 3380#L200-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 3379#L490 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 3332#L69 assume !(0 != ~pumpRunning~0); 3281#L336 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 3280#L420 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret17, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 3260#L394-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret16, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 3277#L368-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 3275#L667-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 2956#L672-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 3272#L539-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 3270#L539-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 3268#L545-3 processEnvironment__wrappee__highWaterSensor_#t~ret16 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret16;havoc processEnvironment__wrappee__highWaterSensor_#t~ret16; 2937#L372-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 2935#L343 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 3302#L659 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 3303#L80 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 3301#L490-1 __utac_acc__Specification5_spec__3_#t~ret9 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 3072#L84 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 2942#L80-1 [2021-10-21 20:13:26,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:26,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-21 20:13:26,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:26,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516681457] [2021-10-21 20:13:26,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:26,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:26,461 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:13:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:26,513 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:13:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:26,514 INFO L82 PathProgramCache]: Analyzing trace with hash 245333008, now seen corresponding path program 1 times [2021-10-21 20:13:26,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:26,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578778974] [2021-10-21 20:13:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:26,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:26,522 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:13:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:26,541 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:13:26,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:26,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1720878634, now seen corresponding path program 1 times [2021-10-21 20:13:26,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:26,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608977338] [2021-10-21 20:13:26,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:26,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:26,616 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:13:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:26,710 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:14:24,089 WARN L207 SmtUtils]: Spent 57.00 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-21 20:15:22,373 WARN L207 SmtUtils]: Spent 28.24 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-21 20:15:22,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:15:22 BoogieIcfgContainer [2021-10-21 20:15:22,534 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:15:22,536 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:15:22,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:15:22,536 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:15:22,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:13:23" (3/4) ... [2021-10-21 20:15:22,544 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 20:15:22,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:15:22,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:15:22,615 INFO L168 Benchmark]: Toolchain (without parser) took 120689.69 ms. Allocated memory was 117.4 MB in the beginning and 239.1 MB in the end (delta: 121.6 MB). Free memory was 76.0 MB in the beginning and 78.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 120.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:22,615 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 117.4 MB. Free memory is still 93.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:22,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.02 ms. Allocated memory is still 117.4 MB. Free memory was 75.8 MB in the beginning and 84.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:22,621 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.35 ms. Allocated memory is still 117.4 MB. Free memory was 84.1 MB in the beginning and 78.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:22,622 INFO L168 Benchmark]: Boogie Preprocessor took 119.27 ms. Allocated memory is still 117.4 MB. Free memory was 78.4 MB in the beginning and 74.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:22,622 INFO L168 Benchmark]: RCFGBuilder took 1191.50 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 74.2 MB in the beginning and 113.6 MB in the end (delta: -39.4 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:22,623 INFO L168 Benchmark]: BuchiAutomizer took 118653.38 ms. Allocated memory was 161.5 MB in the beginning and 239.1 MB in the end (delta: 77.6 MB). Free memory was 113.6 MB in the beginning and 81.5 MB in the end (delta: 32.1 MB). Peak memory consumption was 127.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:22,623 INFO L168 Benchmark]: Witness Printer took 77.85 ms. Allocated memory is still 239.1 MB. Free memory was 81.5 MB in the beginning and 78.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:22,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 117.4 MB. Free memory is still 93.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 546.02 ms. Allocated memory is still 117.4 MB. Free memory was 75.8 MB in the beginning and 84.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.35 ms. Allocated memory is still 117.4 MB. Free memory was 84.1 MB in the beginning and 78.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 119.27 ms. Allocated memory is still 117.4 MB. Free memory was 78.4 MB in the beginning and 74.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1191.50 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 74.2 MB in the beginning and 113.6 MB in the end (delta: -39.4 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 118653.38 ms. Allocated memory was 161.5 MB in the beginning and 239.1 MB in the end (delta: 77.6 MB). Free memory was 113.6 MB in the beginning and 81.5 MB in the end (delta: 32.1 MB). Peak memory consumption was 127.6 MB. Max. memory is 16.1 GB. * Witness Printer took 77.85 ms. Allocated memory is still 239.1 MB. Free memory was 81.5 MB in the beginning and 78.4 MB in the end (delta: 3.1 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 6 locations. The remainder module has 544 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 118.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 117.3s. Construction of modules took 0.5s. 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 116.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 908 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 544 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1014 SDtfs, 2889 SDslu, 2573 SDs, 0 SdLazy, 277 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 502.5ms 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: 164]: 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=1, NULL=29090, NULL=29068, NULL=0, NULL=29070, NULL=0, methaneLevelCritical=0, NULL=29071, retValue_acc=0, NULL=0, NULL=29091, NULL=0, tmp___1=0, NULL=0, NULL=29084, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64c96a96=0, cleanupTimeShifts=4, tmp=0, NULL=29079, waterLevel=1, NULL=0, NULL=29093, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=0, tmp=1, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=0, tmp=1, NULL=29095, tmp___0=0, NULL=29074, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@780eda4d=0, NULL=29092, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@789c2cbd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@88b32a4=53, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4208be16=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@509ae19e=0, head=0, NULL=0, NULL=0, tmp=0, NULL=29085, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@545dd0a5=0, NULL=29080, tmp=0, retValue_acc=0, NULL=0, NULL=0, NULL=29072, tmp___0=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19d97fe3=0, NULL=0, NULL=29094, tmp=1, NULL=0, NULL=29082, tmp=0, NULL=29083, switchedOnBeforeTS=0, \result=0, NULL=0, systemActive=1, NULL=29087, \result=1, NULL=0, \result=0, NULL=29076, tmp___0=0, \result=0, NULL=29089, NULL=29088, NULL=29077, NULL=29069, NULL=29081, retValue_acc=1, tmp___2=53, splverifierCounter=0, NULL=0, NULL=29075, NULL=29078, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3814f3f4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@692c194d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3779a559=0, NULL=29073, NULL=0, NULL=0, NULL=29086, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71902c36=0, NULL=0, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L53] int switchedOnBeforeTS ; [L221] int cleanupTimeShifts = 4; [L326] int pumpRunning = 0; [L327] int systemActive = 1; [L584] int waterLevel = 1; [L585] int methaneLevelCritical = 0; [L856] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L296] int retValue_acc ; [L297] int tmp ; [L131] int retValue_acc ; [L134] retValue_acc = 1 [L135] return (retValue_acc); [L303] tmp = valid_product() [L305] COND TRUE \read(tmp) [L58] switchedOnBeforeTS = 0 [L155] int splverifierCounter ; [L156] int tmp ; [L157] int tmp___0 ; [L158] int tmp___1 ; [L159] int tmp___2 ; [L162] splverifierCounter = 0 Loop: [L164] COND TRUE 1 [L166] COND TRUE splverifierCounter < 4 [L172] tmp = __VERIFIER_nondet_int() [L174] COND FALSE !(\read(tmp)) [L182] tmp___0 = __VERIFIER_nondet_int() [L184] COND FALSE !(\read(tmp___0)) [L192] tmp___2 = __VERIFIER_nondet_int() [L194] COND TRUE \read(tmp___2) [L486] int retValue_acc ; [L489] retValue_acc = pumpRunning [L490] return (retValue_acc); [L67] switchedOnBeforeTS = isPumpRunning() [L336] COND FALSE !(\read(pumpRunning)) [L343] COND TRUE \read(systemActive) [L417] int tmp ; [L420] COND FALSE !(\read(pumpRunning)) [L391] int tmp ; [L394] COND FALSE !(\read(pumpRunning)) [L365] int tmp ; [L368] COND TRUE ! pumpRunning [L531] int retValue_acc ; [L532] int tmp ; [L533] int tmp___0 ; [L664] int retValue_acc ; [L667] COND TRUE waterLevel < 2 [L668] retValue_acc = 1 [L669] return (retValue_acc); [L537] tmp = isHighWaterSensorDry() [L539] COND TRUE \read(tmp) [L540] tmp___0 = 0 [L544] retValue_acc = tmp___0 [L545] return (retValue_acc); [L370] tmp = isHighWaterLevel() [L372] COND FALSE !(\read(tmp)) [L73] int tmp ; [L74] int tmp___0 ; [L655] int retValue_acc ; [L658] retValue_acc = waterLevel [L659] return (retValue_acc); [L78] tmp = getWaterLevel() [L80] COND TRUE tmp != 2 [L486] int retValue_acc ; [L489] retValue_acc = pumpRunning [L490] return (retValue_acc); [L82] tmp___0 = isPumpRunning() [L84] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:15:22,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6844b4b-b36d-44f5-a733-d9bf08553eeb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...