./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product35.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_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/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_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/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_22af409e-d629-4df8-9816-8377e61dab46/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 45ba8c3ee5105630bc9146965d68439e6204903aca4c5a31cd4f017e456c8589 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 20:10:55,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:10:55,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:10:55,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:10:55,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:10:55,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:10:55,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:10:55,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:10:55,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:10:55,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:10:55,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:10:55,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:10:55,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:10:55,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:10:55,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:10:55,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:10:55,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:10:55,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:10:55,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:10:55,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:10:55,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:10:55,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:10:55,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:10:55,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:10:55,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:10:55,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:10:55,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:10:55,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:10:55,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:10:55,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:10:55,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:10:55,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:10:55,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:10:55,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:10:55,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:10:55,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:10:55,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:10:55,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:10:55,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:10:55,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:10:55,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:10:55,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 20:10:55,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:10:55,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:10:55,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:10:55,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:10:55,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:10:55,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:10:55,502 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:10:55,502 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:10:55,503 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:10:55,503 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:10:55,503 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:10:55,503 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:10:55,503 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:10:55,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:10:55,504 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:10:55,504 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:10:55,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:10:55,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:10:55,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:10:55,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:10:55,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:10:55,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:10:55,506 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:10:55,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:10:55,506 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:10:55,506 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:10:55,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:10:55,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:10:55,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:10:55,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:10:55,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:10:55,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:10:55,509 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:10:55,509 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_22af409e-d629-4df8-9816-8377e61dab46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45ba8c3ee5105630bc9146965d68439e6204903aca4c5a31cd4f017e456c8589 [2021-10-21 20:10:55,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:10:55,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:10:55,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:10:55,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:10:55,838 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:10:55,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c [2021-10-21 20:10:55,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/data/ff1ba9b52/0750bad5856645d5b8b558c9a5aa1cd5/FLAG8f1d7ea60 [2021-10-21 20:10:56,499 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:10:56,499 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c [2021-10-21 20:10:56,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/data/ff1ba9b52/0750bad5856645d5b8b558c9a5aa1cd5/FLAG8f1d7ea60 [2021-10-21 20:10:56,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/data/ff1ba9b52/0750bad5856645d5b8b558c9a5aa1cd5 [2021-10-21 20:10:56,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:10:56,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:10:56,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:10:56,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:10:56,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:10:56,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:10:56" (1/1) ... [2021-10-21 20:10:56,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab0d3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:56, skipping insertion in model container [2021-10-21 20:10:56,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:10:56" (1/1) ... [2021-10-21 20:10:56,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:10:56,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:10:57,090 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_22af409e-d629-4df8-9816-8377e61dab46/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c[1605,1618] [2021-10-21 20:10:57,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:10:57,260 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:10:57,273 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_22af409e-d629-4df8-9816-8377e61dab46/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c[1605,1618] [2021-10-21 20:10:57,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:10:57,342 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:10:57,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57 WrapperNode [2021-10-21 20:10:57,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:10:57,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:10:57,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:10:57,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:10:57,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57" (1/1) ... [2021-10-21 20:10:57,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57" (1/1) ... [2021-10-21 20:10:57,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:10:57,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:10:57,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:10:57,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:10:57,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57" (1/1) ... [2021-10-21 20:10:57,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57" (1/1) ... [2021-10-21 20:10:57,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57" (1/1) ... [2021-10-21 20:10:57,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57" (1/1) ... [2021-10-21 20:10:57,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57" (1/1) ... [2021-10-21 20:10:57,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57" (1/1) ... [2021-10-21 20:10:57,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57" (1/1) ... [2021-10-21 20:10:57,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:10:57,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:10:57,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:10:57,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:10:57,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57" (1/1) ... [2021-10-21 20:10:57,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:10:57,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:10:57,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:10:57,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:10:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:10:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:10:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:10:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:10:58,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:10:58,464 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-10-21 20:10:58,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:10:58 BoogieIcfgContainer [2021-10-21 20:10:58,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:10:58,467 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:10:58,468 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:10:58,471 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:10:58,472 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:10:58,472 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:10:56" (1/3) ... [2021-10-21 20:10:58,473 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3469fa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:10:58, skipping insertion in model container [2021-10-21 20:10:58,473 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:10:58,473 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:57" (2/3) ... [2021-10-21 20:10:58,474 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3469fa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:10:58, skipping insertion in model container [2021-10-21 20:10:58,474 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:10:58,474 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:10:58" (3/3) ... [2021-10-21 20:10:58,475 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2021-10-21 20:10:58,517 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:10:58,517 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:10:58,517 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:10:58,517 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:10:58,517 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:10:58,518 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:10:58,518 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:10:58,518 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:10:58,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 86 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 85 states have internal predecessors, (129), 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 20:10:58,583 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2021-10-21 20:10:58,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:10:58,584 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:10:58,592 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:58,592 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:58,592 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:10:58,593 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 86 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 85 states have internal predecessors, (129), 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 20:10:58,599 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2021-10-21 20:10:58,599 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:10:58,600 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:10:58,601 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:58,601 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:58,606 INFO L791 eck$LassoCheckResult]: Stem: 65#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 54#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 17#L553true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 5#L561true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 26#L151true assume 0 != main_~tmp~0; 63#L122true ~switchedOnBeforeTS~0 := 0; 21#L914true havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 24#L935-1true [2021-10-21 20:10:58,607 INFO L793 eck$LassoCheckResult]: Loop: 24#L935-1true assume !false; 60#L578true assume test_~splverifierCounter~0 < 4; 18#L579true test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 77#L587true assume !(0 != test_~tmp~4); 50#L587-1true test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 57#L597true assume !(0 != test_~tmp___0~0); 23#L597-1true test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 43#L607true assume 0 != test_~tmp___2~0; 69#L613-1true havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 61#L833true __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 30#L924true assume !(0 != ~pumpRunning~0); 49#L748true assume !(0 != ~systemActive~0); 39#L755true havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 14#L714true __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 9#L935true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 24#L935-1true [2021-10-21 20:10:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:58,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-21 20:10:58,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:58,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727599665] [2021-10-21 20:10:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:58,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:58,879 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:10:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:59,034 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:10:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:59,037 INFO L82 PathProgramCache]: Analyzing trace with hash -241799531, now seen corresponding path program 1 times [2021-10-21 20:10:59,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:59,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261629179] [2021-10-21 20:10:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:59,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:59,046 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:10:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:59,058 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:10:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:59,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1692225679, now seen corresponding path program 1 times [2021-10-21 20:10:59,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:59,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324146694] [2021-10-21 20:10:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:59,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:59,267 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 20:10:59,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:10:59,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324146694] [2021-10-21 20:10:59,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324146694] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:59,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:59,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:10:59,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096944251] [2021-10-21 20:10:59,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:10:59,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:10:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:10:59,460 INFO L87 Difference]: Start difference. First operand has 86 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 85 states have internal predecessors, (129), 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 20:10:59,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:59,694 INFO L93 Difference]: Finished difference Result 223 states and 310 transitions. [2021-10-21 20:10:59,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:10:59,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 310 transitions. [2021-10-21 20:10:59,704 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 143 [2021-10-21 20:10:59,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 202 states and 289 transitions. [2021-10-21 20:10:59,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 202 [2021-10-21 20:10:59,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 202 [2021-10-21 20:10:59,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 202 states and 289 transitions. [2021-10-21 20:10:59,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:10:59,716 INFO L681 BuchiCegarLoop]: Abstraction has 202 states and 289 transitions. [2021-10-21 20:10:59,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states and 289 transitions. [2021-10-21 20:10:59,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 128. [2021-10-21 20:10:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 128 states have (on average 1.421875) internal successors, (182), 127 states have internal predecessors, (182), 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 20:10:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 182 transitions. [2021-10-21 20:10:59,754 INFO L704 BuchiCegarLoop]: Abstraction has 128 states and 182 transitions. [2021-10-21 20:10:59,754 INFO L587 BuchiCegarLoop]: Abstraction has 128 states and 182 transitions. [2021-10-21 20:10:59,754 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:10:59,754 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 128 states and 182 transitions. [2021-10-21 20:10:59,757 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 90 [2021-10-21 20:10:59,757 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:10:59,757 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:10:59,758 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:59,758 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:59,758 INFO L791 eck$LassoCheckResult]: Stem: 400#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 394#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 350#L553 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 327#L561 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 328#L151 assume 0 != main_~tmp~0; 362#L122 ~switchedOnBeforeTS~0 := 0; 354#L914 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 338#L935-1 [2021-10-21 20:10:59,758 INFO L793 eck$LassoCheckResult]: Loop: 338#L935-1 assume !false; 359#L578 assume test_~splverifierCounter~0 < 4; 351#L579 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 352#L587 assume !(0 != test_~tmp~4); 390#L587-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 391#L597 assume !(0 != test_~tmp___0~0); 357#L597-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 358#L607 assume 0 != test_~tmp___2~0; 387#L613-1 havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 399#L833 __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 367#L924 assume !(0 != ~pumpRunning~0); 369#L748 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 329#L780 assume !(0 == ~pumpRunning~0); 330#L755 havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 345#L714 __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 336#L935 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 338#L935-1 [2021-10-21 20:10:59,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:59,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-21 20:10:59,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:59,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216717766] [2021-10-21 20:10:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:59,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:59,811 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:10:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:59,874 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:10:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:59,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1062538435, now seen corresponding path program 1 times [2021-10-21 20:10:59,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:59,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422396067] [2021-10-21 20:10:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:59,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:59,918 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 20:10:59,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:10:59,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422396067] [2021-10-21 20:10:59,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422396067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:59,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:59,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:10:59,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593972328] [2021-10-21 20:10:59,920 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:10:59,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:10:59,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:10:59,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:10:59,921 INFO L87 Difference]: Start difference. First operand 128 states and 182 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:11:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:11:00,013 INFO L93 Difference]: Finished difference Result 175 states and 236 transitions. [2021-10-21 20:11:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:11:00,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 175 states and 236 transitions. [2021-10-21 20:11:00,020 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 126 [2021-10-21 20:11:00,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 175 states to 175 states and 236 transitions. [2021-10-21 20:11:00,030 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 175 [2021-10-21 20:11:00,032 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 175 [2021-10-21 20:11:00,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 236 transitions. [2021-10-21 20:11:00,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:11:00,037 INFO L681 BuchiCegarLoop]: Abstraction has 175 states and 236 transitions. [2021-10-21 20:11:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states and 236 transitions. [2021-10-21 20:11:00,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-10-21 20:11:00,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 175 states have (on average 1.3485714285714285) internal successors, (236), 174 states have internal predecessors, (236), 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 20:11:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 236 transitions. [2021-10-21 20:11:00,055 INFO L704 BuchiCegarLoop]: Abstraction has 175 states and 236 transitions. [2021-10-21 20:11:00,056 INFO L587 BuchiCegarLoop]: Abstraction has 175 states and 236 transitions. [2021-10-21 20:11:00,056 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:11:00,056 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 175 states and 236 transitions. [2021-10-21 20:11:00,059 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 126 [2021-10-21 20:11:00,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:11:00,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:11:00,061 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:11:00,061 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:11:00,062 INFO L791 eck$LassoCheckResult]: Stem: 721#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 711#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 661#L553 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 636#L561 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 637#L151 assume 0 != main_~tmp~0; 673#L122 ~switchedOnBeforeTS~0 := 0; 665#L914 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 666#L935-1 [2021-10-21 20:11:00,062 INFO L793 eck$LassoCheckResult]: Loop: 666#L935-1 assume !false; 788#L578 assume test_~splverifierCounter~0 < 4; 787#L579 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 786#L587 assume !(0 != test_~tmp~4); 705#L587-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 706#L597 assume !(0 != test_~tmp___0~0); 669#L597-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 670#L607 assume 0 != test_~tmp___2~0; 782#L613-1 havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 781#L833 __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 780#L924 assume !(0 != ~pumpRunning~0); 704#L748 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 640#L780 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 641#L722 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 674#L727 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 675#L882 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 710#L882-2 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 685#L888 processEnvironment_#t~ret58 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret58;havoc processEnvironment_#t~ret58; 686#L784 assume !(0 != processEnvironment_~tmp~5); 720#L755 havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 655#L714 __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 656#L935 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 666#L935-1 [2021-10-21 20:11:00,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:11:00,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-21 20:11:00,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:11:00,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668677122] [2021-10-21 20:11:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:11:00,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:11:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:00,119 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:11:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:00,180 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:11:00,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:11:00,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1275481455, now seen corresponding path program 1 times [2021-10-21 20:11:00,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:11:00,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044684938] [2021-10-21 20:11:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:11:00,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:11:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:11:00,230 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 20:11:00,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:11:00,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044684938] [2021-10-21 20:11:00,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044684938] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:11:00,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:11:00,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:11:00,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869197868] [2021-10-21 20:11:00,232 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:11:00,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:11:00,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:11:00,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:11:00,234 INFO L87 Difference]: Start difference. First operand 175 states and 236 transitions. cyclomatic complexity: 64 Second operand has 5 states, 4 states have (on average 5.5) 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 20:11:00,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:11:00,368 INFO L93 Difference]: Finished difference Result 446 states and 589 transitions. [2021-10-21 20:11:00,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:11:00,369 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 446 states and 589 transitions. [2021-10-21 20:11:00,375 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 307 [2021-10-21 20:11:00,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 446 states to 446 states and 589 transitions. [2021-10-21 20:11:00,379 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 446 [2021-10-21 20:11:00,379 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 446 [2021-10-21 20:11:00,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 446 states and 589 transitions. [2021-10-21 20:11:00,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:11:00,382 INFO L681 BuchiCegarLoop]: Abstraction has 446 states and 589 transitions. [2021-10-21 20:11:00,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states and 589 transitions. [2021-10-21 20:11:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 343. [2021-10-21 20:11:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 343 states have (on average 1.3119533527696794) internal successors, (450), 342 states have internal predecessors, (450), 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 20:11:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 450 transitions. [2021-10-21 20:11:00,409 INFO L704 BuchiCegarLoop]: Abstraction has 343 states and 450 transitions. [2021-10-21 20:11:00,409 INFO L587 BuchiCegarLoop]: Abstraction has 343 states and 450 transitions. [2021-10-21 20:11:00,409 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:11:00,409 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 343 states and 450 transitions. [2021-10-21 20:11:00,411 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 252 [2021-10-21 20:11:00,412 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:11:00,412 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:11:00,412 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:11:00,413 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 20:11:00,413 INFO L791 eck$LassoCheckResult]: Stem: 1357#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 1347#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1296#L553 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 1273#L561 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1274#L151 assume 0 != main_~tmp~0; 1310#L122 ~switchedOnBeforeTS~0 := 0; 1300#L914 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1301#L935-1 [2021-10-21 20:11:00,413 INFO L793 eck$LassoCheckResult]: Loop: 1301#L935-1 assume !false; 1306#L578 assume test_~splverifierCounter~0 < 4; 1298#L579 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 1299#L587 assume !(0 != test_~tmp~4); 1341#L587-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 1342#L597 assume !(0 != test_~tmp___0~0); 1304#L597-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 1305#L607 assume 0 != test_~tmp___2~0; 1335#L613-1 havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 1351#L833 __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 1352#L924 assume !(0 != ~pumpRunning~0); 1340#L748 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1275#L780 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1276#L722 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1308#L727 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 1309#L882 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 1346#L882-2 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 1320#L888 processEnvironment_#t~ret58 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret58;havoc processEnvironment_#t~ret58; 1321#L784 assume !(0 != processEnvironment_~tmp~5); 1327#L755 havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 1328#L714 __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 1281#L935 assume 2 != __utac_acc__Specification5_spec__3_~tmp~7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 1282#L833-1 __utac_acc__Specification5_spec__3_#t~ret79 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 1372#L939 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 1301#L935-1 [2021-10-21 20:11:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:11:00,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-21 20:11:00,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:11:00,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914128378] [2021-10-21 20:11:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:11:00,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:11:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:00,446 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:11:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:00,486 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:11:00,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:11:00,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1671985194, now seen corresponding path program 1 times [2021-10-21 20:11:00,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:11:00,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072856970] [2021-10-21 20:11:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:11:00,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:11:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:00,493 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:11:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:00,501 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:11:00,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:11:00,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1531391856, now seen corresponding path program 1 times [2021-10-21 20:11:00,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:11:00,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671713740] [2021-10-21 20:11:00,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:11:00,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:11:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:00,559 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:11:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:00,635 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:11:59,718 WARN L207 SmtUtils]: Spent 58.71 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-21 20:13:02,931 WARN L207 SmtUtils]: Spent 29.87 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-21 20:13:03,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:13:03 BoogieIcfgContainer [2021-10-21 20:13:03,087 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:13:03,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:13:03,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:13:03,088 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:13:03,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:10:58" (3/4) ... [2021-10-21 20:13:03,091 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 20:13:03,160 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:13:03,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:13:03,162 INFO L168 Benchmark]: Toolchain (without parser) took 126365.99 ms. Allocated memory was 123.7 MB in the beginning and 157.3 MB in the end (delta: 33.6 MB). Free memory was 86.5 MB in the beginning and 49.8 MB in the end (delta: 36.7 MB). Peak memory consumption was 71.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:03,162 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 123.7 MB. Free memory was 97.0 MB in the beginning and 97.0 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:13:03,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.50 ms. Allocated memory is still 123.7 MB. Free memory was 86.2 MB in the beginning and 90.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:03,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.52 ms. Allocated memory is still 123.7 MB. Free memory was 90.3 MB in the beginning and 86.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:03,164 INFO L168 Benchmark]: Boogie Preprocessor took 68.80 ms. Allocated memory is still 123.7 MB. Free memory was 86.9 MB in the beginning and 84.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:03,165 INFO L168 Benchmark]: RCFGBuilder took 987.14 ms. Allocated memory is still 123.7 MB. Free memory was 84.8 MB in the beginning and 44.9 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:03,166 INFO L168 Benchmark]: BuchiAutomizer took 124620.05 ms. Allocated memory was 123.7 MB in the beginning and 157.3 MB in the end (delta: 33.6 MB). Free memory was 44.9 MB in the beginning and 51.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 52.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:03,167 INFO L168 Benchmark]: Witness Printer took 72.41 ms. Allocated memory is still 157.3 MB. Free memory was 51.9 MB in the beginning and 49.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:03,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 123.7 MB. Free memory was 97.0 MB in the beginning and 97.0 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 546.50 ms. Allocated memory is still 123.7 MB. Free memory was 86.2 MB in the beginning and 90.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.52 ms. Allocated memory is still 123.7 MB. Free memory was 90.3 MB in the beginning and 86.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.80 ms. Allocated memory is still 123.7 MB. Free memory was 86.9 MB in the beginning and 84.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 987.14 ms. Allocated memory is still 123.7 MB. Free memory was 84.8 MB in the beginning and 44.9 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 124620.05 ms. Allocated memory was 123.7 MB in the beginning and 157.3 MB in the end (delta: 33.6 MB). Free memory was 44.9 MB in the beginning and 51.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 52.8 MB. Max. memory is 16.1 GB. * Witness Printer took 72.41 ms. Allocated memory is still 157.3 MB. Free memory was 51.9 MB in the beginning and 49.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 343 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 124.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 123.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 68.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 177 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 343 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 377 SDtfs, 986 SDslu, 931 SDs, 0 SdLazy, 134 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 271.8ms 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: 577]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=28597} State at position 1 is {NULL=0, NULL=28611, NULL=0, NULL=28597, NULL=28622, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@abb07ab=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47bd2314=71, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@183f4dd6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17e15ae=0, methaneLevelCritical=0, tmp=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b0e1d0b=0, tmp___1=0, NULL=28623, NULL=0, NULL=28604, NULL=28618, retValue_acc=0, cleanupTimeShifts=4, NULL=0, waterLevel=1, NULL=0, NULL=0, NULL=0, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, tmp=1, NULL=28602, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c6bd555=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1bc5bda1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46267f16=0, \result=1, NULL=28609, NULL=0, retValue_acc=0, NULL=28628, NULL=0, retValue_acc=1, NULL=0, NULL=28625, NULL=28598, tmp=1, NULL=28627, head=0, NULL=0, NULL=0, tmp=0, NULL=28606, NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=28601, NULL=28626, NULL=28599, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ad72a46=0, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=28613, switchedOnBeforeTS=0, NULL=28603, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d6d9abd=0, \result=0, NULL=28612, NULL=0, NULL=0, systemActive=1, NULL=28605, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=28610, tmp___0=0, NULL=28615, \result=0, NULL=0, NULL=28607, retValue_acc=1, NULL=28616, NULL=28608, tmp___2=71, splverifierCounter=0, NULL=0, NULL=28624, NULL=28617, NULL=28600, NULL=28614} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L59] int cleanupTimeShifts = 4; [L334] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L639] int waterLevel = 1; [L640] int methaneLevelCritical = 0; [L736] int pumpRunning = 0; [L737] int systemActive = 1; [L908] int switchedOnBeforeTS ; [L142] int retValue_acc ; [L143] int tmp ; [L557] int retValue_acc ; [L560] retValue_acc = 1 [L561] return (retValue_acc); [L149] tmp = valid_product() [L151] COND TRUE \read(tmp) [L913] switchedOnBeforeTS = 0 [L568] int splverifierCounter ; [L569] int tmp ; [L570] int tmp___0 ; [L571] int tmp___1 ; [L572] int tmp___2 ; [L575] splverifierCounter = 0 Loop: [L577] COND TRUE 1 [L579] COND TRUE splverifierCounter < 4 [L585] tmp = __VERIFIER_nondet_int() [L587] COND FALSE !(\read(tmp)) [L595] tmp___0 = __VERIFIER_nondet_int() [L597] COND FALSE !(\read(tmp___0)) [L605] tmp___2 = __VERIFIER_nondet_int() [L607] COND TRUE \read(tmp___2) [L829] int retValue_acc ; [L832] retValue_acc = pumpRunning [L833] return (retValue_acc); [L922] switchedOnBeforeTS = isPumpRunning() [L748] COND FALSE !(\read(pumpRunning)) [L755] COND TRUE \read(systemActive) [L777] int tmp ; [L780] COND TRUE ! pumpRunning [L874] int retValue_acc ; [L875] int tmp ; [L876] int tmp___0 ; [L719] int retValue_acc ; [L722] COND TRUE waterLevel < 2 [L723] retValue_acc = 1 [L724] return (retValue_acc); [L880] tmp = isHighWaterSensorDry() [L882] COND TRUE \read(tmp) [L883] tmp___0 = 0 [L887] retValue_acc = tmp___0 [L888] return (retValue_acc); [L782] tmp = isHighWaterLevel() [L784] COND FALSE !(\read(tmp)) [L928] int tmp ; [L929] int tmp___0 ; [L710] int retValue_acc ; [L713] retValue_acc = waterLevel [L714] return (retValue_acc); [L933] tmp = getWaterLevel() [L935] COND TRUE tmp != 2 [L829] int retValue_acc ; [L832] retValue_acc = pumpRunning [L833] return (retValue_acc); [L937] tmp___0 = isPumpRunning() [L939] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:13:03,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22af409e-d629-4df8-9816-8377e61dab46/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...